DFI TGU968 User manual

TGU968
COM Express Compact Module
User’s Manual
©May 10, 2023 DFI Inc.

2User's Manual | TGU968
Copyright
This publication contains information that is protected by copyright. No part of it may be repro-
duced in any form or by any means or used to make any transformation/adaptation without the
prior written permission from the copyright holders.
This publication is provided for informational purposes only. The manufacturer makes no
representations or warranties with respect to the contents or use of this manual and specifi-
cally disclaims any express or implied warranties of merchantability or fitness for any particular
purpose. The user will assume the entire risk of the use or the results of the use of this docu-
ment. Further, the manufacturer reserves the right to revise this publication and make changes
to its contents at any time, without obligation to notify any person or entity of such revisions or
changes.
Changes after the publication’s first release will be based on the product’s revision. The website
will always provide the most updated information.
© 2023. All Rights Reserved.
Trademarks
Product names or trademarks appearing in this manual are for identification purpose only and
are the properties of the respective owners.
COM Express Specification Reference
PICMG® COM Express® Module Base Specification.
http://www.picmg.org/
FCC and DOC Statement on Class B
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reason-
able protection against harmful interference when the equipment is operated in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encour-
aged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the re-
ceiver is connected.
• Consult the dealer or an experienced radio TV technician for help.
Notice:
• The changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
• Shielded interface cables must be used in order to comply with the emission limits.

3User's Manual | TGU968
Table of Contents
Chapter 1 - Introduction................................................................................................................6
Specifications ......................................................................................................................... 6
Chapter 2 - Concept...................................................................................................................... 8
COM Express Module Standards .........................................................................................8
Chapter 3 - Hardware Installation................................................................................................9
Board Layout ......................................................................................................................... 9
Block Diagram ........................................................................................................................ 9
Connector..............................................................................................................................10
COM Express Connector...............................................................................................10
COM Express Connector ....................................................................................................11
COM Express Connector Signal Description .....................................................................15
Cooling Option......................................................................................................................23
Heat Sink........................................................................................................................23
Installing the COM Express Debug Card ...........................................................................24
COMe-DEBUG.................................................................................................................25

4User's Manual | TGU968
About this Manual
This manual can be downloaded from the website.
The manual is subject to change and update without notice, and may be based on editions that
do not resemble your actual products. Please visit our website or contact our sales representa-
tives for the latest editions.
Warranty
• Warranty does not cover damages or failures that occur from misuse of the product,
inability to use the product, unauthorized replacement or alteration of components and
product specifications.
• The warranty is void if the product has been subjected to physical abuse, improper
installation, modification, accidents or unauthorized repair of the product.
• Unless otherwise instructed in this user’s manual, the user may not, under any circum-
stances, attempt to perform service, adjustments or repairs on the product, whether
in or out of warranty. It must be returned to the purchase point, factory or authorized
service agency for all such work.
• We will not be liable for any indirect, special, incidental or consequential damages to
the product that has been modified or altered.
Static Electricity Precautions
It is quite easy to inadvertently damage your PC, system board, components or devices even
before installing them in your system unit. Static electrical discharge can damage computer
components without causing any signs of physical damage. You must take extra care in han-
dling them to ensure against electrostatic build-up.
• To prevent electrostatic build-up, leave the system board in its anti-static bag until you
are ready to install it.
• Wear an antistatic wrist strap.
• Do all preparation work on a static-free surface.
• Hold the device only by its edges. Be careful not to touch any of the components, con-
tacts or connections.
• Avoid touching the pins or contacts on all modules and connectors. Hold modules or
connectors by their ends.
Safety Measures
• To avoid damage to the system, use the correct AC input voltage range.
• To reduce the risk of electric shock, unplug the power cord before removing the sys-
tem chassis cover for installation or servicing. After installation or servicing, cover the
system chassis before plugging the power cord.
Important:
Electrostatic discharge (ESD) can damage your processor, disk drive and other
components. Perform the upgrade instruction procedures described at an ESD
workstation only. If such a station is not available, you can provide some ESD pro-
tection by wearing an antistatic wrist strap and attaching it to a metal part of the
system chassis. If a wrist strap is unavailable, establish and maintain contact with
the system chassis throughout any procedures requiring ESD protection.

5User's Manual | TGU968
About the Package
The package contains the following items. If any of these items are missing or damaged,
please contact your dealer or sales representative for assistance.
• 1 TGU968 board
Optional Items
The board and accessories in the package may not come similar to the information listed
above. This may differ in accordance with the sales region or models in which it was sold. For
more information about the standard package in your region, please contact your dealer or
sales representative.
Before Using the System Board
Before using the system board, prepare basic system components.
If you are installing the system board in a new system, you will need at least the following inter-
nal components.
• Storage devices such as hard disk drive, etc.
You will also need external system peripherals you intend to use which will normally include at
least a keyboard, a mouse and a video display monitor.

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Chapter 1
INTRODUCTION
User's Manual | TGU968
Chapter 1 - Introduction
XSpecifications
SYSTEM Processor Intel® Core™ i7-1185G7E Processor (Core 4; Max speed 2.8 GHz; TDP 15-28W)
Intel® Core™ i7-1185GRE Processor (Core 4; Max speed 2.8 GHz; TDP 15-28W) Support In-band ECC
Intel® Core™ i5-1145G7E Processor (Core 4; Max speed 2.6 GHz; TDP 15-28W)
Intel® Core™i5-1145GRE Processor (Core 4; Max speed 2.6 GHz; TDP 15-28W) Support In-band ECC
Intel® Core™ i3-1115G4E Processor (Core 2; Max speed 3.0 GHz; TDP 15-28W)
Intel® Core™ i3-1115GRE Processor (Core 2; Max speed 3.0 GHz; TDP 15-28W Support In-band ECC
Intel® Celeron® 6305E Processor (Core 2; Max speed 1.8 GHz; TDP 15W)
Memory Two 260-Pin SO-DIMM up to 64GB, Dual Channel DDR4 3200MHz
BIOS AMI BIOS
GRAPHICS Controller Intel® Iris® Xe graphics
Feature OpenGL 5.0, DirectX 12, OpenCL 2.1
HW Decode: WMV9, AVC/H264, JPEG/MJPEG, HEVC/H265, VP9, AV1
HW Encode: AVC/H264, JPEG, HEVC/H265, VP9
Display 1 x VGA
1 x LVDS/eDP (eDP available upon request)
3 x DDI
* VGA: resolution up to 1920x1200 @ 60Hz
* LVDS: dual channel 24-bit, resolution up to 1920x1200 @ 60Hz
* eDP: resolution up to 4096x2304 @ 60Hz
* HDMI: resolution up to 4096x2160 @ 30Hz
* DP++: resolution up to 4096x2304 @ 60Hz
Triple
Displays
VGA + LVDS + DDI
DDI + eDP + DDI (available upon request)
EXPANSION Interface 1 x PCIe x4 (Gen 4)
5 x PCIex1 (Gen3) (8 x PCIex1 available upon request) 1 x I2C
1 x SMBus
1 x SPI
2 x UART (TX/RX)
AUDIO Interface HD Audio
ETHERNET Controller 1 x Intel® I225 series (10/100/1000Mbps/2.5G), co-lay PCIe x1 (available upon request)
I/O USB 4 x USB 3.2 Gen.2
8 x USB 2.0
SATA 2 x SATA 3.0 (up to 6Gb/s), co-lay PCIe x1 (available upon request)
NVMe SSD 1 x 64GB/128GB/256GB/512GB/1024GB on board SSD (available upon request)
DIO 1 x 8-bit DIO

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Chapter 1
INTRODUCTION
User's Manual | TGU968
WATCHDOG TIMER Output & Interval System Reset, Programmable via Software from 1 to 255 Seconds
SECURITY TPM Available Upon Request
Power Type 8.5~20V, 5VSB, VCC_RTC (ATX mode)
8.5~12V, VCC_RTC (AT mode)
Consumption Boot up: i7-1185GRE: 12V @ 2.03A (24.36W);
Idle: i7-1185GRE: 12V @ 0.86A (10.2W);
Max.: i7-1185GRE: 12V @ 3.35A (40.2W)
OS SUPPORT Windows: Windows 10 IoT Enterprise 64-bit
Linux
ENVIRONMENT Temperature Operating: 0 to 60°C, -40 to 85°C
Storage: -40 to 85°C
Humidity Operating: 10 to 90% RH
Storage: 10 to 90% RH
MTBF 1,083,012 hrs @ 25°C;
730,611 hrs @ 45°C;
513,984 hrs @ 60°C;
398,344 hrs @ 70°C;
266,028 hrs @ 85°C
MECHANICAL Dimensions COM Express® Compact
95mm (3.74") x 95mm (3.74")
Compliance PICMG COM Express® R3.0, Type 6
STANDARDS AND CER-
TIFICATIONS
Certification CE, FCC

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Chapter 2
HARDWARE INSTALLATION
User's Manual | TGU968
Chapter 2 - Concept
106.00
91.00
70.00
51.00
4.00
18.00
6.00
0.00
16.50 4.00 0.00
Extended
BasicCompact
Mini
74.20 80.00 91.00 121.00 151.00
Common for all Form Factors
Extended only
Basic only
Compact only
Compact and Basic only
Mini only
XCOM Express Module Standards
The figure below shows the dimensions of the different types of COM Express modules.
TGU968 is a COM Express Compact. The dimension is 95mm x 95mm.

9
Chapter 3
HARDWARE INSTALLATION
User's Manual | TGU968 9
Chapter 3 - Hardware Installation
XBoard Layout
COM Express Connector
C1
D1
C110
D110
B1B110
A1A110
COM Express Connector
TOP
SPI Flash BIOS
BOTTOM
XBlock Diagram
EEPROM
SATA 3.0 2x
USB 3.1 4x
A / B
SMBus
Intel ULT SOC
Intel®GLAN
I225LM
MDI
SPI Flash
SPI Bus
C / D
SO-DIMM 260PIN
DDR4-3200
Non-ECC/In-band ECC
Channel A
PCIe 3.0 x1
LPC Bus
WDT
I2C Bus
TPM
2.0
(optional)
Serial Port 1,2
Fan PWM/
TACH_IN
SLP/LID
Embedded
Controller
ITE8528
DDI Port 3x
HDA
USB 2.0 8x
PTN3460
LVDS/48bit
CH7517A
VGA
PCIe x1 (5x1)
PCIe 4.0 x4
Channel B
SO-DIMM 260PIN
DDR4-3200
Non-ECC/In-band ECC
NVME
SSD
(optional)
eDP
eDP
8bit DIO
eSPI Bus
eSPI to LPC bridge
F85227
LPC Bus
(optional)
(optional)
Intel ULT
SOC
PCIe x1 (option)
PCIe x1
PCIe x1
(optional)
(optional)

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HARDWARE INSTALLATION
User's Manual | TGU968
XConnector
The COM Express connector is used to interface the TGU968 COM Express board to a carrier
board. Connect the COM Express connector (located on the solder side of the board) to the
COM Express connector on the carrier board.
Refer to the following pages for the pin functions of the connector.
COM Express Connector
COM Express Connector
COM Express Connector
C1
D1
C110
D110
B1B110
A1A110
COM Express Connector

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User's Manual | TGU968
XCOM Express Connector
Row A Row B
A1 GND (FIXED) B1 GND (FIXED)
A2 GBE0_MDI3- B2 GBE0_ACT#
A3 GBE0_MDI3+ B3 LPC_FRAME#
A4 GBE0_LINK100# B4 LPC_AD0
A5 GBE0_LINK1000# B5 LPC_AD1
A6 GBE0_MDI2- B6 LPC_AD2
A7 GBE0_MDI2+ B7 LPC_AD3
A8 GBE0_LINK# B8 LPC_DRQ0# (NA)
A9 GBE0_MDI1- B9 LPC_DRQ1# (NA)
A10 GBE0_MDI1+ B10 LPC_CLK
A11 GND (FIXED) B11 GND (FIXED)
A12 GBE0_MDI0- B12 PWRBTN#
A13 GBE0_MDI0+ B13 SMB_CK
A14 GBE0_CTREF B14 SMB_DAT
A15 SUS_S3# B15 SMB_ALERT#
A16 SATA0_TX+ B16 SATA1_TX+
A17 SATA0_TX- B17 SATA1_TX-
A18 SUS_S4# B18 SUS_STAT#
A19 SATA0_RX+ B19 SATA1_RX+
A20 SATA0_RX- B20 SATA1_RX-
A21 GND (FIXED) B21 GND (FIXED)
A22 SATA2_TX+ (NA) B22 SATA3_TX+ (NA)
A23 SATA2_TX- (NA) B23 SATA3_TX- (NA)
A24 SUS_S5# B24 PWR_OK
A25 SATA2_RX+ (NA) B25 SATA3_RX+ (NA)
A26 SATA2_RX- (NA) B26 SATA3_RX- (NA)
A27 BATLOW# B27 WDT
Row A Row B
A28 (S)ATA_ACT# B28 NA
A29 AC/HDA_SYNC B29 AC/HDA _SDIN1
A30 AC/HDA _RST# B30 AC/HDA _SDIN0
A31 GND (FIXED) B31 GND (FIXED)
A32 AC/HDA _BITCLK B32 SPKR
A33 AC/HDA _SDOUT B33 I2C_CK
A34 BIOS_DIS0# B34 I2C_DAT
A35 THRMTRIP# B35 THRM#
A36 USB6- B36 USB7-
A37 USB6+ B37 USB7+
A38 USB_6_7_OC# B38 USB_4_5_OC#
A39 USB4- B39 USB5-
A40 USB4+ B40 USB5+
A41 GND (FIXED) B41 GND (FIXED)
A42 USB2- B42 USB3-
A43 USB2+ B43 USB3+
A44 USB_2_3_OC# B44 USB_0_1_OC#
A45 USB0- B45 USB1-
A46 USB0+ B46 USB1+
A47 VCC_RTC B47 EXCD1_PERST#
A48 EXCD0_PERST# B48 EXCD1_CPPE#
A49 EXCD0_CPPE# B49 SYS_RESET#
A50 LPC_SERIRQ B50 CB_RESET#
A51 GND (FIXED) B51 GND (FIXED)
A52 PCIE_TX5+
(Optional) B52 PCIE_TX5+ (Optional)
A53 PCIE_TX5-
(Optional) B53 PCIE_TX5- (Optional)
A54 GPI0 B54 GPO1
A55 PCIE_TX4+ B55 PCIE_RX4+

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Row A Row B
A56 PCIE_TX4- B56 PCIE_RX4-
A57 GND B57 GPO2
A58 PCIE_TX3+ B58 PCIE_RX3+
A59 PCIE_TX3- B59 PCIE_RX3-
A60 GND (FIXED) B60 GND (FIXED)
A61 PCIE_TX2+ B61 PCIE_RX2+
A62 PCIE_TX2- B62 PCIE_RX2-
A63 GPI1 B63 GPO3
A64 PCIE_TX1+ B64 PCIE_RX1+
A65 PCIE_TX1- B65 PCIE_RX1-
A66 GND B66 WAKE0#
A67 GPI2 B67 WAKE1#
A68 PCIE_TX0+ B68 PCIE_RX0+
A69 PCIE_TX0- B69 PCIE_RX0-
A70 GND(FIXED) B70 GND (FIXED)
A71 LVDS_A0+/ eDP_TX2+ B71 LVDS_B0+
A72 LVDS_A0-/ eDP_TX2- B72 LVDS_B0-
A73 LVDS_A1+/ eDP_TX1+ B73 LVDS_B1+
A74 LVDS_A1-/ eDP_TX1- B74 LVDS_B1-
A75 LVDS_A2+/ eDP_TX0+ B75 LVDS_B2+
A76 LVDS_A2-/ eDP_TX0- B76 LVDS_B2-
A77 LVDS_VDD_EN /eDP_VDD_EN B77 LVDS_B3+
A78 LVDS_A3+ B78 LVDS_B3-
A79 LVDS_A3- B79 LVDS_BKLT_EN /eDP_BKLT_EN
A80 GND (FIXED) B80 GND (FIXED)
A81 LVDS_A_CK+/eDP_TX3+ B81 LVDS_B_CK+
A82 LVDS_A_CK-/eDP_TX3- B82 LVDS_B_CK-
Row A Row B
A83 LVDS_I2C_CK/eDP_AUX+ B83 LVDS_BKLT_CTRL/eDP_BLKT_CTRL
A84 LVDS_I2C_DAT /eDP_AUX- B84 VCC_5V_SBY
A85 GPI3 B85 VCC_5V_SBY
A86 RSVD B86 VCC_5V_SBY
A87 RSVD/ePD_HPD B87 VCC_5V_SBY
A88 PCIE0_CK_REF+ B88 BIOS_DIS1#
A89 PCIE0_CK_REF- B89 VGA_RED
A90 GND (FIXED) B90 GND (FIXED)
A91 SPI_POWER B91 VGA_GRN
A92 SPI_MISO B92 VGA_BLU
A93 GPO0 B93 VGA_HSYNC
A94 SPI_CLK B94 VGA_VSYNC
A95 SPI_MOSI B95 VGA_I2C_CK
A96 TPM_PP B96 VGA_I2C_DAT
A97 Type10# (NC) B97 SPI_CS#
A98 SER0_TX B98 RSVD
A99 SER0_RX B99 RSVD
A100 GND (FIXED) B100 GND (FIXED)
A101 SER1_TX B101 FAN_PWMOUT
A102 SER1_RX B102 FAN_TACHIN
A103 LID# B103 SLEEP#
A104 VCC_8.5V~ 20V B104 VCC_8.5V~ 20V
A105 VCC_8.5V~ 20V B105 VCC_8.5V~ 20V
A106 VCC_8.5V~ 20V B106 VCC_8.5V~ 20V
A107 VCC_8.5V~ 20V B107 VCC_8.5V~ 20V
A108 VCC_8.5V~ 20V B108 VCC_8.5V~ 20V
A109 VCC_8.5V~ 20V B109 VCC_8.5V~ 20V
A110 GND (FIXED) B110 GND (FIXED)

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Row C Row D
C1 GND (FIXED) D1 GND (FIXED)
C2 GND D2 GND
C3 USB_SSRX0- D3 USB_SSTX0-
C4 USB_SSRX0+ D4 USB_SSTX0+
C5 GND D5 GND
C6 USB_SSRX1- D6 USB_SSTX1-
C7 USB_SSRX1+ D7 USB_SSTX1+
C8 GND D8 GND
C9 USB_SSRX2- D9 USB_SSTX2-
C10 USB_SSRX2+ D10 USB_SSTX2+
C11 GND (FIXED) D11 GND (FIXED)
C12 USB_SSRX3- D12 USB_SSTX3-
C13 USB_SSRX3+ D13 USB_SSTX3+
C14 GND D14 GND
C15 DDI1_PAIR6+ (NA) D15 DDI1_CTRLCLK_AUX+
C16 DDI1_PAIR6- (NA) D16 DDI1_CTRLDATA_AUX-
C17 RSVD D17 RSVD
C18 RSVD D18 RSVD
C19 PCIE_RX6+ (Optional) D19 PCIE_TX6+ (Optional)
C20 PCIE_RX6- (Optional) D20 PCIE_TX6- (Optional)
C21 GND (FIXED) D21 GND (FIXED)
C22 PCIE_RX7+ (Optional) D22 PCIE_TX7+ (Optional)
C23 PCIE_RX7- (Optional) D23 PCIE_TX7- (Optional)
C24 DDI1_HPD D24 RSVD
C25 DDI1_PAIR4+ (NA) D25 RSVD
C26 DDI1_PAIR4- (NA) D26 DDI1_PAIR0+
C27 RSVD D27 DDI1_PAIR0-
Row C Row D
C28 RSVD D28 RSVD
C29 DDI1_PAIR5+ (NA) D29 DDI1_PAIR1+
C30 DDI1_PAIR5- (NA) D30 DDI1_PAIR1-
C31 GND (FIXED) D31 GND (FIXED)
C32 DDI2_CTRLCLK_AUX+ D32 DDI1_PAIR2+
C33 DDI2_CTRLDATA_AUX- D33 DDI1_PAIR2-
C34 DDI2_DDC_AUX_SEL D34 DDI1_DDC_AUX_SEL
C35 RSVD D35 RSVD
C36 DDI3_CTRLCLK_AUX+ D36 DDI1_PAIR3+
C37 DDI3_CTRLDATA_AUX- D37 DDI1_PAIR3-
C38 DDI2_DDC_AUX_SEL D38 RSVD
C39 DDI3_PAIR0+ D39 DDI2_PAIR0+
C40 DDI3_PAIR0- D40 DDI2_PAIR0-
C41 GND (FIXED) D41 GND (FIXED)
C42 DDI3_PAIR1+ D42 DDI2_PAIR1+
C43 DDI3_PAIR1- D43 DDI2_PAIR1-
C44 DDI3_HPD D44 DDI2_HPD
C45 RSVD D45 RSVD
C46 DDI3_PAIR2+ D46 DDI2_PAIR2+
C47 DDI3_PAIR2- D47 DDI2_PAIR2-
C48 RSVD D48 RSVD
C49 DDI3_PAIR3+ D49 DDI2_PAIR3+
C50 DDI3_PAIR3- D50 DDI2_PAIR3-
C51 GND (FIXED) D51 GND (FIXED)
C52 PEG_RX0+ (Optional) D52 PEG_TX0+ (Optional)
C53 PEG_RX0- (Optional) D53 PEG_TX0- (Optional)
C54 TYPE0# (NC) D54 PEG_LANE_RV# (Optional)
C55 PEG_RX1+ (Optional) D55 PEG_TX1+ (Optional)

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Row C Row D
C56 PEG_RX1- (Optional) D56 PEG_TX1- (Optional)
C57 TYPE1# (NC) D57 TYPE2# (GND)
C58 PEG_RX2+ (Optional) D58 PEG_TX2+ (Optional)
C59 PEG_RX2- (Optional) D59 PEG_TX2- (Optional)
C60 GND (FIXED) D60 GND (FIXED)
C61 PEG_RX3+ (Optional) D61 PEG_TX3+ (Optional)
C62 PEG_RX3- (Optional) D62 PEG_TX3- (Optional)
C63 RSVD D63 RSVD
C64 RSVD D64 RSVD
C65 PEG_RX4+ (NA) D65 PEG_TX4+ (NA)
C66 PEG_RX4- (NA) D66 PEG_TX4- (NA)
C67 RAPID_SHUTDOWN D67 GND
C68 PEG_RX5+ (NA) D68 PEG_TX5+ (NA)
C69 PEG_RX5- (NA) D69 PEG_TX5- (NA)
C70 GND (FIXED) D70 GND (FIXED)
C71 PEG_RX6+ (NA) D71 PEG_TX6+ (NA)
C72 PEG_RX6- (NA) D72 PEG_TX6- (NA)
C73 GND D73 GND
C74 PEG_RX7+ (NA) D74 PEG_TX7+ (NA)
C75 PEG_RX7- (NA) D75 PEG_TX7- (NA)
C76 GND D76 GND
C77 RSVD D77 RSVD
C78 PEG_RX8+ (NA) D78 PEG_TX8+ (NA)
C79 PEG_RX8- (NA) D79 PEG_TX8- (NA)
C80 GND (FIXED) D80 GND (FIXED)
C81 PEG_RX9+ (NA) D81 PEG_TX9+ (NA)
C82 PEG_RX9- (NA) D82 PEG_TX9- (NA)
Row C Row D
C83 RSVD D83 RSVD
C84 GND D84 GND
C85 PEG_RX10+ (NA) D85 PEG_TX10+ (NA)
C86 PEG_RX10- (NA) D86 PEG_TX10- (NA)
C87 GND D87 GND
C88 PEG_RX11+ (NA) D88 PEG_TX11+ (NA)
C89 PEG_RX11- (NA) D89 PEG_TX11- (NA)
C90 GND (FIXED) D90 GND (FIXED)
C91 PEG_RX12+ (NA) D91 PEG_TX12+ (NA)
C92 PEG_RX12- (NA) D92 PEG_TX12- (NA)
C93 GND D93 GND
C94 PEG_RX13+ (NA) D94 PEG_TX13+ (NA)
C95 PEG_RX13- (NA) D95 PEG_TX13- (NA)
C96 GND D96 GND
C97 RSVD D97 RSVD
C98 PEG_RX14+ (NA) D98 PEG_TX14+ (NA)
C99 PEG_RX14- (NA) D99 PEG_TX14- (NA)
C100 GND (FIXED) D100 GND (FIXED)
C101 PEG_RX15+ (NA) D101 PEG_TX15+ (NA)
C102 PEG_RX15- (NA) D102 PEG_TX15- (NA)
C103 GND D103 GND
C104 VCC_8.5V~ 20V D104 VCC_8.5V~ 20V
C105 VCC_8.5V~ 20V D105 VCC_8.5V~ 20V
C106 VCC_8.5V~ 20V D106 VCC_8.5V~ 20V
C107 VCC_8.5V~ 20V D107 VCC_8.5V~ 20V
C108 VCC_8.5V~ 20V D108 VCC_8.5V~ 20V
C109 VCC_8.5V~ 20V D109 VCC_8.5V~ 20V
C110 GND (FIXED) D110 GND (FIXED)

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XCOM Express Connector Signal Description
AC97/HDA Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
AC/HAD_RST#
A30
O CMOS
3.3V Suspend/3.3V
Connect to CODEC pin 11 RESET#
Reset output to CODEC, active low.
AC/HDA_SYNC
A29
O CMOS
3.3V/3.3V
Connect to CODEC pin 10 SYNC
Sample-synchronization signal to the CODEC(s).
AC/HDA_BITCLK
A32
I/O CMOS
3.3V/3.3V
Connect to CODEC pin 6 BIT_CLK
Serial data clock generated by the external CODEC(s).
AC/HDA_SDOUT
A33
O CMOS
3.3V/3.3V
Connect to CODEC pin 5 SDATA_OUT
Serial TDM data output to the CODEC.
AC/HDA_SDIN2
B28
I/O CMOS
3.3V Suspend/3.3V
HDA_SDIN2 NA
NC
Serial TDM data inputs from up to 3 CODECs.
AC/HDA_SDIN1
B29
I/O CMOS
3.3V Suspend/3.3V
Connect 33 Ωin series to CODEC1 pin 8 SDATA_IN
AC/HDA_SDIN0
B30
I/O CMOS
3.3V Suspend/3.3V
Connect 33 Ωin series to CODEC0 pin 8 SDATA_IN
Gigabit Ethernet Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
GBE0_MDI0+ A13 I/O MDI
Less than 3.3V
May be active in
Suspend
i225 2.5GbE signal Connect to Magnetics Module MDI0+/- Gigabit Ethernet Controller 0: Media Dependent Interface DifferentialPairs 0,1,2,3. The MDI can
operate in 1000, 100 and 10 Mbit / sec modes or in 2.5, 5.0 and 10 Gbps modes. Some pairs are
unused in some modes, per the following:
1000BASE-T
2.5GBASE-T
5.0GBASE-T
10GBASE-T
100BASE-TX
10BASE-T
MDI[0]+/-
B1_DA+/-
TX+/-
TX+/-
MDI[1]+/-
B1_DB+/-
RX+/-
RX+/-
MDI[2]+/-
B1_DC+/-
MDI[3]+/-
B1_DD+/-
GBE0_MDI1+ A10
I/O MDI
Less than 3.3V
May be active in
Suspend
Connect to Magnetics Module MDI1+/-
GBE0_MDI1- A9
I/O MDI
Less than 3.3V
May be active in
Suspend
GBE0_MDI2+ A7
I/O MDI
Less than 3.3V
May be active in
Suspend
Connect to Magnetics Module MDI2+/-
GBE0_MDI2- A6
I/O MDI
Less than 3.3V
May be active in
Suspend
GBE0_MDI3+ A3
I/O MDI
Less than 3.3V
May be active in
Suspend
Connect to Magnetics Module MDI3+/-
GBE0_MDI3- A2
I/O MDI
Less than 3.3V
May be active in
Suspend
GBE0_ACT#
B2
OD CMOS
3.3V Suspend/3.3V
Connect to LED and recommend current limit resistor 150 Ω to 3.3VSB
Gigabit Ethernet Controller 0 activity indicator, active low.
GBE0_LINK#
A8
OD CMOS
3.3V Suspend/3.3V
NC
Gigabit Ethernet Controller 0 link indicator, active low.
GBE0_LINK_MID#A4 OD CMOS 3.3V Suspend/3.3V
Connect to LED and recommend current limit resistor 150Ω to 3.3VSB
Gigabit Ethernet Controller MID Speed Link indicator. Active low. If active, the link is
established but at
a speed lower than the maximum speed supported by the Ethernet controller. Note that based on
capabilities of the Ethernet controller used this signal might not be active for all possible lower link
speeds. This Module pin should be capable of sinking up to 20 mA at a Voh of 0.4 max. Was
GBE0_LINK100# in COM Express Rev. 3.0.
GBE0_LINK_MAX#A5 OD CMOS 3.3V Suspend/3.3V
Connect to LED and recommend current limit resistor 150Ω to 3.3VSB
Gigabit Ethernet Controller MAX Speed Link Indicator. Active low. If active, the link is established at
the maximum link speed supported by the controller. This Module pin should be capable of sinking up
to 20 mA at a Voh of 0.4 max. Was GBE0_LINK1000# in COM Express Rev. 3.0.
SATA Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
SATA0_TX+
A16
O SATA
AC coupled on Module
AC Coupling capacitor
Connect to SATA0 Conn TX pin Serial ATA or SAS Channel 0 transmit differential pair.
SATA0_TX-
A17
O SATA
AC coupled on Module
AC Coupling capacitor
SATA0_RX+
A19
I SATA
AC coupled on Module
AC Coupling capacitor
Connect to SATA0 Conn RX pin Serial ATA or SAS Channel 0 receive differential pair.
SATA0_RX-
A20
I SATA
AC coupled on Module
AC Coupling capacitor
SATA1_TX+
B16
O SATA
AC coupled on Module
AC Coupling capacitor
Connect to SATA1 Conn TX pin Serial ATA or SAS Channel 1 transmit differential pair.
SATA1_TX-
B17
O SATA
AC coupled on Module
AC Coupling capacitor
SATA1_RX+
B19
I SATA
AC coupled on Module
AC Coupling capacitor
Connect to SATA1 Conn RX pin Serial ATA or SAS Channel 1 receive differential pair.
SATA1_RX-
B20
I SATA
AC coupled on Module
AC Coupling capacitor
SATA2_TX+
A22
O SATA
AC coupled on Module
NA
NA (No support) NA (No support)
SATA2_TX-
A23
O SATA
AC coupled on Module
NA
SATA2_RX+
A25
I SATA
AC coupled on Module
NA
NA (No support) NA (No support)
SATA2_RX-
A26
I SATA
AC coupled on Module
NA
SATA3_TX+
B22
O SATA
AC coupled on Module
NA
NA (No support) NA (No support)
SATA3_TX-
B23
O SATA
AC coupled on Module
NA
SATA3_RX+
B25
I SATA
AC coupled on Module
NA
NA (No support) NA (No support)
SATA3_RX-
B26
I SATA
AC coupled on Module
NA
ATA_ACT#
A28
I/O CMOS
3.3V / 3.3V
PU 47K to 3.3V
Connect to LED and recommend current limit resistor 220Ωto 3.3V
ATA (parallel and serial) or SAS activity indicator, active low.
PCI Express Lanes Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
PCIE_TX0+
A68
O PCIE AC coupled on Module
AC Coupling capacitor
Connect to PCIE device or slot PCI Express differential transmit pairs 0
PCIE_TX0-
A69
AC Coupling capacitor
PCIE_RX0+
B68
I PCIE AC coupled off Module
Device - Connect AC Coupling cap 0.1uF
Slot - Connect to PCIE Conn pin PCI Express differential receive pairs 0
PCIE_RX0-
B69
PCIE_TX1+
A64
O PCIE AC coupled on Module
AC Coupling capacitor
Connect to PCIE device or slot PCI Express differential transmit pairs 1
PCIE_TX1-
A65
AC Coupling capacitor
PCIE_RX1+
B64
I PCIE AC coupled off Module
Device - Connect AC Coupling cap 0.1uF
Slot - Connect to PCIE Conn pin
PCI Express differential receive pairs 1
PCIE_RX1-
B65
PCIE_TX2+
A61
O PCIE AC coupled on Module
AC Coupling capacitor
Connect to PCIE device or slot PCI Express differential transmit pairs 2
PCIE_TX2-
A62
AC Coupling capacitor
PCIE_RX2+
B61
I PCIE AC coupled off Module
Device - Connect AC Coupling cap 0.1uF
Slot - Connect to PCIE Conn pin
PCI Express differential receive pairs 2
PCIE_RX2-
B62
PCIE_TX3+
A58
O PCIE AC coupled on Module
AC Coupling capacitor
Connect to PCIE device or slot PCI Express differential transmit pairs 3 (This Port is BOM Option with On board LAN)
PCIE_TX3-
A59
AC Coupling capacitor
PCIE_RX3+
B58
I PCIE AC coupled off Module
Device - Connect AC Coupling cap 0.1uF (This Port is BOM Option with On board LAN)
Slot - Connect to PCIE Conn pin
PCI Express differential receive pairs 3 (This Port is BOM Option with On board LAN)
PCIE_RX3-
B59
PCIE_TX4+
A55
O PCIE AC coupled on Module
AC Coupling capacitor
Connect to PCIE device or slot PCI Express differential transmit pairs 4
PCIE_TX4-
A56
AC Coupling capacitor

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HARDWARE INSTALLATION
User's Manual | TGU968
PCI Express Lanes Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
PCIE_RX4+
B55
I PCIE AC coupled off Module
Device - Connect AC Coupling cap 0.1uF
Slot - Connect to PCIE Conn pin
PCI Express differential receive pairs 4
PCIE_RX4-
B56
PCIE_TX5+(Optional to LAN i225)
A52
O PCIE AC coupled on Module
Optional
Connect
to PCIE device or slot (This Port is BOM Option with On board LAN) PCI Express differential transmit pairs 5 (This Port is BOM Option with i225)
PCIE_TX5-(Optional to LAN i225)
A53
Optional
PCIE_RX5+(Optional to LAN i225)
B52
I PCIE AC coupled off Module
Optional
Device - Connect AC Coupling cap 0.1uF (This Port is BOM Option with On board LAN)
Slot - Connect to PCIE Conn pin
PCI Express differential receive pairs 5 (This Port is BOM Option with i225)
PCIE_RX5-(Optional to LAN i225)
B53
Optional
PCIE_TX6+ (Optional to SATA port)
D19
O PCIE AC coupled on Module
Optional
Optional
to PCIe or SATA PCI Express differential transmit pairs 6
PCIE_TX6- (Optional to SATA port)
D20
Optional
PCIE_RX6+(Optional to SATA port)
C19
I PCIE AC coupled off Module
Optional
Optional
to PCIe or SATA PCI Express differential receive pairs 6
PCIE_RX6-(Optional to SATA port)
C20
Optional
PCIE_TX7+ (Optional to SATA port)
D22
O PCIE AC coupled on Module
Optional
Optional
to PCIe or SATA PCI Express differential transmit pairs 7
PCIE_TX7- (Optional to SATA port)
D23
Optional
PCIE_RX7+ (Optional to SATA port)
C22
I PCIE AC coupled off Module
Optional
Optional
to PCIe or SATA PCI Express differential receive pairs 7
PCIE_RX7- (Optional to SATA port)
C23
Optional
PCIE0_CK_REF+
A88
O PCIE PCIE
Connect
to PCIE device, PCIe CLK Buffer or slot
Reference clock output for all PCI Express and PCI Express Graphicslanes.
PCIE0_CK_REF-
A89
PEG Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
PEG_TX0+ (Optional)
D52
O PCIE AC coupled on Module
Optional
Optional
to PCIe or NVMe SSD
Optional
by module
PEG_TX0- (Optional)
D53
Optional
PEG_RX0+ (Optional)
C52
I PCIE AC coupled off Module
PCI Express Graphics receive differential pairs 0
PEG channel 0, Receive Input differential pair
PEG_RX0- (Optional)
C53
PEG_TX1+ (Optional)
D55
O PCIE AC coupled on Module
Optional
Optional
to PCIe or NVMe SSD
Optional
by module
PEG_TX1- (Optional)
D56
Optional
PEG_RX1+ (Optional)
C55
I PCIE AC coupled off Module
PCI Express Graphics receive differential pairs 1
PEG channel 1
, Receive Input differential pair
PEG_RX1- (Optional)
C56
PEG_TX2+ (Optional)
D58
O PCIE AC coupled on Module
Optional
Optional
to PCIe or NVMe SSD
Optional
by module
PEG_TX2- (Optional)
D59
Optional
PEG_RX2+ (Optional)
C58
I PCIE AC coupled off Module
PCI Express Graphics
receive differential pairs 2
PEG channel 2
, Receive Input differential pair
PEG_RX2- (Optional)
C59
PEG_TX3+ (Optional)
D61
O PCIE AC coupled on Module
Optional
Optional
to PCIe or NVMe SSD
Optional
by module
PEG_TX3- (Optional)
D62
Optional
PEG_RX3+ (Optional)
C61
I PCIE AC coupled off Module
PCI Express Graphics
receive differential pairs 3
PEG channel 3
, Receive Input differential pair
PEG_RX3- (Optional)
C62
PEG_TX4+
D65
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 4
PEG_TX4-
D66
NA
PEG_RX4+
C65
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 4
PEG_RX4-
C66
NA
PEG_TX5+
D68
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 5
PEG_TX5-
D69
NA
PEG_RX5+
C68
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 5
PEG_RX5-
C69
NA
PEG_TX6+
D71
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 6
PEG_TX6-
D72
NA
PEG_RX6+
C71
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 6
PEG_RX6-
C72
NA
PEG_TX7+
D74
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 7
PEG_TX7-
D75
NA
PEG_RX7+
C74
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 7
PEG_RX7-
C75
NA
PEG_TX8+
D78
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 8
PEG_TX8-
D79
NA
PEG_RX8+
C78
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 8
PEG_RX8-
C79
NA
PEG_TX9+
D81
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 9
PEG_TX9-
D82
NA
PEG_RX9+
C81
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 9
PEG_RX9-
C82
NA
PEG_TX10+
D85
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 10
PEG_TX10-
D86
NA
PEG_RX10+
C85
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 10
PEG_RX10-
C86
NA
PEG_TX11+
D88
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 11
PEG_TX11-
D89
NA
PEG_RX11+
C88
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 11
PEG_RX11-
C89
NA
PEG_TX12+
D91
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 12
PEG_TX12-
D92
NA
PEG_RX12+
C91
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 12
PEG_RX12-
C92
NA

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HARDWARE INSTALLATION
User's Manual | TGU968
PEG Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
PEG_TX13+
D94
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 13
PEG_TX13-
D95
NA
PEG_RX13+
C94
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 13
PEG_RX13-
C95
NA
PEG_TX14+
D98
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 14
PEG_TX14-
D99
NA
PEG_RX14+
C98
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 14
PEG_RX14-
C99
NA
PEG_TX15+
D101
O PCIE AC coupled on Module
NA
PCI Express Graphics transmit differential pairs 15
PEG_TX15-
D102
NA
PEG_RX15+
C101
I PCIE AC coupled off Module
NA
PCI Express Graphics receive differential pairs 15
PEG_RX15-
C102
NA
PEG_LANE_RV#
D54 I CMOS 3.3V / 3.3V PU 10K to 3.3V
PCI Express Graphics lane reversal input strap. Pull low on the
Carrierboard to reverse lane order.
DDI Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
DDI1_PAIR0+/SDVO1_RED+
D26
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 1 Pair 0 differential pairs/Serial Digital Video B red output differential pair
DDI1_PAIR0-/SDVO1_RED-
D27
Connect AC Coupling Capacitors 0.1uF to Device
DDI1_PAIR1+/SDVO1_GRN+
D29
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 1 Pair 1 differential pairs/Serial Digital Video B green output differential pair
DDI1_PAIR1-/SDVO1_GRN-
D30
Connect AC Coupling Capacitors 0.1uF to Device
DDI1_PAIR2+/SDVO1_BLU+
D32
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 1 Pair 2 differential pairs/Serial Digital Video B blue output differential pair
DDI1_PAIR2-/SDVO1_BLU-
D33
Connect AC Coupling Capacitors 0.1uF to Device
DDI1_PAIR3+/SDVO1_CK+
D36
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 1 Pair 3 differential pairs/Serial Digital Video B clock output differential pair.
DDI1_PAIR3-/SDVO1_CK-
D37
Connect AC Coupling Capacitors 0.1uF to Device
DDI1_PAIR4+/SDVO1_INT+ C25 I PCIE AC coupled off Module NA (No support) NA (No support)
DDI1_PAIR4-/SDVO1_INT-
C26
NA (No support)
NA (No support)
DDI1_PAIR5+/SDVO1_TVCLKIN+
C29
I PCIE AC coupled off Module
NA (No support)
NA (No support)
DDI1_PAIR5-/SDVO1_TVCLKIN-
C30
NA (No support)
NA (No support)
DDI1_PAIR6+/SDVO1_FLDSTALL+
C15
I PCIE AC coupled off Module
NA (No support)
NA (No support)
DDI1_PAIR6-/SDVO1_FLDSTALL-
C16
NA (No support)
NA (No support)
DDI1_CTRLCLK_AUX+/SDVO1_CTRLCLK D15
I/O PCIE AC coupled on Module
PD 100K to GND
(S/W IC between Rpu/PCH) Connect to DP AUX+ DP AUX+ function if DDI1_DDC_AUX_SEL is no connect
I/O OD CMOS 3.3V / 3.3V
PU 2.2K to 3.3V, PD 100K to GND
(S/W IC between Rpu/Rpd
resistor)
Connect to HDMI/DVI I2C CTRLCLK HDMI/DVI I2C CTRLCLK if DDI1_DDC_AUX_SEL is pulled high
DDI1_CTRLCLK_AUX-/SDVO1_CTRLDATA D16
I/O PCIE AC coupled on Module
PU 100K to 3.3V
(S/W IC between Rpu/PCH) Connect to DP AUX-DP AUX- function if DDI1_DDC_AUX_SEL is no connect
I/O OD CMOS 3.3V / 3.3V
PU 2.2K to 3.3V/PU 100K to 3.3V
(S/W IC between 2.2K/100K
resistor)
Connect to HDMI/DVI I2C CTRLDATA HDMI/DVI I2C CTRLDATA if DDI1_DDC_AUX_SEL is pulled high
DDI1_HPD C24 I CMOS 3.3V / 3.3V
PD
1M and Connect to device Hot Plug Detect DDI Hot-Plug Detect
DDI1_DDC_AUX_SEL D34 I CMOS 3.3V / 3.3V PD 1M to GND PU 100K to 3.3V for DDC(HDMI/DVI)
Selects the function of DDI1_CTRLCLK_AUX+ and DDI1_CTRLDATA_AUX-.
DDI[n]_DDC_AUX_SEL shall be pulled to 3.3V on the Carrier with a 100K Ohm
resistor to configure the DDI[n]_AUX pair as the DDC channel.
Carrier DDI[n]_DDC_AUX_SEL should be connected to pin 13 of the DisplayPort
DDI2_PAIR0+ D39
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 2 Pair 0 differential pairs/Serial Digital Video B red output differential pair
DDI2_PAIR0-D40
Connect AC Coupling Capacitors 0.1uF to Device
DDI2_PAIR1+ D42
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 2 Pair 1 differential pairs/Serial Digital Video B grenn output differential pair
DDI2_PAIR1-D43
Connect AC Coupling Capacitors 0.1uF to Device
DDI2_PAIR2+ D46
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 2 Pair 2 differential pairs/Serial Digital Video B blue output differential pair
DDI2_PAIR2-D47
Connect AC Coupling Capacitors 0.1uF to Device
DDI2_PAIR3+ D49
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 2 Pair 3 differential pairs/Serial Digital Video B clock output differential pair
DDI2_PAIR3-D50
Connect AC Coupling Capacitors 0.1uF to Device

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HARDWARE INSTALLATION
User's Manual | TGU968
DDI Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
DDI2_CTRLCLK_AUX+ C32
I/O PCIE AC coupled on Module
PD 100K to GND
(S/W IC between Rpu/PCH) Connect to DP AUX+ DP AUX+ function if DDI2_DDC_AUX_SEL is no connect
I/O OD CMOS 3.3V / 3.3V
PU 2.2K to 3.3V, PD 100K to GND
(S/W IC between Rpu/Rpd
resistor)
Connect to HDMI/DVI I2C CTRLCLK
HDMI/DVI I2C CTRLCLK if DDI2_DDC_AUX_SEL is pulled high
DDI2_CTRLDATA_AUX- C33
I/O PCIE AC coupled on Module
PU 100K to 3.3V
(S/W IC between Rpu/PCH)
Connect to DP AUX- DP AUX- function if DDI2_DDC_AUX_SEL is no connect
I/O OD CMOS 3.3V / 3.3V
PU 2.2K to 3.3V/PU 100K to 3.3V
(S/W IC between 2.2K/100K
resistor)
Connect to HDMI/DVI I2C CTRLDATA HDMI/DVI I2C CTRLDATA if DDI2_DDC_AUX_SEL is pulled high
DDI2_HPD
D44
I CMOS
3.3V / 3.3V
PD 1M and Connect to device Hot Plug Detect
DDI Hot-Plug Detect
DDI2_DDC_AUX_SEL C34 I CMOS 3.3V / 3.3V PD 1M to GND PU 100K to 3.3V for DDC(HDMI/DVI)
Selects the function of DDI2_CTRLCLK_AUX+ and DDI2_CTRLDATA_AUX-.
DDI[n]_DDC_AUX_SEL shall be pulled to 3.3V on the Carrier with a 100K Ohmresistor
to configure the DDI[n]_AUX pair as the DDC channel.
Carrier
DDI[n]_DDC_AUX_SEL should be connected to pin 13 of the DisplayPort
DDI3_PAIR0+
C39
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 3 Pair 0 differential pairs/Serial Digital Video B red output differential pair
DDI3_PAIR0-
C40
Connect AC Coupling Capacitors 0.1uF to Device
DDI3_PAIR1+
C42
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 3 Pair 1 differential pairs/Serial Digital Video B green output differential pair
DDI3_PAIR1-
C43
Connect AC Coupling Capacitors 0.1uF to Device
DDI3_PAIR2+
C46
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 3 Pair 2 differential pairs/Serial Digital Video B blue output differential pair
DDI3_PAIR2-
C47
Connect AC Coupling Capacitors 0.1uF to Device
DDI3_PAIR3+
C49
O PCIE AC coupled off Module
Connect AC Coupling Capacitors 0.1uF to Device
DDI 3 Pair 3 differential pairs/Serial Digital Video B clock output differential pair
DDI3_PAIR3-
C50
Connect AC Coupling Capacitors 0.1uF to Device
DDI3_CTRLCLK_AUX+ C36
I/O PCIE AC coupled on Module PD 100K to GND
(S/W IC between Rpu/PCH) Connect to DP AUX+ DP AUX+ function if DDI3_DDC_AUX_SEL is no connect
I/O OD CMOS 3.3V / 3.3V PU 2.2K to 3.3V, PD 100K to GND
(S/W IC between Rpu/Rpd resistor)
Connect
to HDMI/DVI I2C CTRLCLK HDMI/DVI I2C CTRLCLK if DDI3_DDC_AUX_SEL is pulled high
DDI3_CTRLDATA_AUX- C37
I/O PCIE AC coupled on Module
PU 100K to 3.3V
(S/W IC between Rpu/PCH) Connect to DP AUX-DP AUX- function if DDI3_DDC_AUX_SEL is no connect
I/O OD CMOS 3.3V / 3.3V PU 2.2K to 3.3V/PU 100K to 3.3V
(S/W IC between 2.2K/100K resistor)
Connect to HDMI/DVI I2C CTRLDATA HDMI/DVI I2C CTRLDATA if DDI3_DDC_AUX_SEL is pulled high
DDI3_HPD
C44
I CMOS
3.3V / 3.3V
PD 1M and Connect to device Hot Plug Detect
DDI Hot-Plug Detect
DDI3_DDC_AUX_SEL C38 I CMOS 3.3V / 3.3V PD 1M to GND PU 100K to 3.3V for DDC(HDMI/DVI)
Selects the function of DDI3_CTRLCLK_AUX+ and DDI3_CTRLDATA_AUX-. DDI[n]_DDC_AUX_SEL
shall be pulled to 3.3V on the Carrier with a 100K Ohm resistor to configure the DDI[n]_AUX pair as
the DDC channel. Carrier DDI[n]_DDC_AUX_SEL should be connected to pin 13 of the DisplayPort
USB Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
USB0+
A46
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 0
USB0-
A45
USB1+
B46
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 1
USB1-
B45
USB2+
A43
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 2
USB2-
A42
USB3+
B43
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 3
USB3-
B42
USB4+
A40
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 4
USB4-
A39
USB5+
B40
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 5
USB5-
B39
USB6+
A37
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 6
USB6-
A36
USB7+
B37
I/O USB 3.3V Suspend/3.3V
Connect 90Ω@100MHz Common Choke in series and ESD suppressors to GND to USB
connector
USB differential pairs 7, USB7 may be configured as a USB client or as a host, or both, at the
Module designer's discretion.(CR901-B default set as a host)
USB7-B36

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HARDWARE INSTALLATION
User's Manual | TGU968
USB Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
USB_0_1_OC# B44 I CMOS 3.3V Suspend/3.3V PU 10k to 3.3VSB Connect to Overcurrent of USB Power Switch
USB over-current sense, USB channels 0 and 1. A pull-up for this line
shall be present on the Module. An open drain driver from a USB
current monitor on the Carrier Board may drive this line low. Do not
pull this line high on the Carrier Board.
USB_2_3_OC# A44 I CMOS 3.3V Suspend/3.3V PU 10k to 3.3VSB Connect to Overcurrent of USB Power Switch
USB over-current sense, USB channels 2 and 3. A pull-up for this line
shall be present on the Module. An open drain driver from a USB
current monitor on the Carrier Board may drive this line low. Do not
pull this line high on the Carrier Board.
USB_4_5_OC# B38 I CMOS 3.3V Suspend/3.3V PU 10k to 3.3VSB Connect to Overcurrent of USB Power Switch
USB over-current sense, USB channels 4 and 5. A pull-up for this line
shall be present on the Module. An open drain driver from a USB
current monitor on the Carrier Board may drive this line low. Do not
pull this line high on the Carrier Board.
USB_6_7_OC# A38 I CMOS 3.3V Suspend/3.3V PU 10k to 3.3VSB Connect to Overcurrent of USB Power Switch
USB over-current sense, USB channels 6 and 7. A pull-up for this line
shall be present on the Module. An open drain driver from a USB
current monitor on the Carrier Board may drive this line low. Do not
pull this line high on the Carrier Board.
USB_SSTX0+
D4
O
PCIE
AC
coupled on Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional transmit signal differential pairs for the SuperSpeed USB data path.
USB_SSTX0- D3
USB_SSRX0+
C4
I
PCIE
AC
coupled off Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional receive signal differential pairs for the SuperSpeed USB data path.
USB_SSRX0- C3
USB_SSTX1+
D7
O
PCIE
AC
coupled on Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional transmit signal differential pairs for the SuperSpeed USB data path.
USB_SSTX1- D6
USB_SSRX1+
C7
I
PCIE
AC
coupled off Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional receive signal differential pairs for the SuperSpeed USB data path.
USB_SSRX1- C6
USB_SSTX2+
D10
O
PCIE
AC
coupled on Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional transmit signal differential pairs for the SuperSpeed USB data path.
USB_SSTX2- D9
USB_SSRX2+
C10
I
PCIE
AC
coupled off Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional receive signal differential pairs for the SuperSpeed USB data path.
USB_SSRX2- C9
USB_SSTX3+
D13
O PCIE
AC
coupled on Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional transmit signal differential pairs for the SuperSpeed USB data path.
USB_SSTX3-
D12
USB_SSRX3+
C13
I PCIE
AC
coupled off Module
AC Coupling capacitor
Connect 90 Ω @100MHz Common Choke in series and ESD suppressors to GND to
USB
connector
Additional receive signal differential pairs for the SuperSpeed USB data path.
USB_SSRX3- C12
LVDS Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
LVDS_A0+ A71 O LVDS LVDS
Connect to LVDS connector
LVDS Channel A differential pairs
Ther LVDS flat panel differential pairs (LVDS_A[0:3]+/-, LVDS_B[0:3]+/-. LVDS_A_CK+/-,
LVDS_B_CK+/-) shall have 100Ωterminations across the pairs at the destination. These
terminations may be on the Carrier Board if the Carrier Board implements a LVDS deserializer
on-board
LVDS_A0-
A72
LVDS_A1+
A73
O LVDS LVDS
Connect to LVDS connector
LVDS_A1-
A74
LVDS_A2+
A75
O LVDS LVDS
Connect to LVDS connector
LVDS_A2-A76
LVDS_A3+
A78
O LVDS LVDS
Connect to LVDS connector
LVDS_A3-
A79
LVDS_A_CK+
A81
O LVDS LVDS
Connect to LVDS connector
LVDS Channel A differential clock
LVDS_A_CK-
A82
LVDS_B0+
B71
O LVDS LVDS
Connect to LVDS connector
LVDS Channel B differential pairs
Ther LVDS flat panel differential pairs (LVDS_A[0:3]+/-, LVDS_B[0:3]+/-. LVDS_A_CK+/-,
LVDS_B_CK+/-) shall have 100Ωterminations across the pairs at the destination. These
terminations may be on the Carrier Board if the Carrier Board implements a LVDS deserializer
on-board
LVDS_B0-
B72
LVDS_B1+
B73
O LVDS LVDS
Connect to LVDS connector
LVDS_B1-
B74
LVDS_B2+
B75
O LVDS LVDS
Connect to LVDS connector
LVDS_B2-
B76
LVDS_B3+
B77
O LVDS LVDS
Connect to LVDS connector
LVDS_B3-
B78
LVDS_B_CK+
B81
O LVDS LVDS
Connect to LVDS connector
LVDS Channel B differential clock
LVDS_B_CK-
B82
LVDS_VDD_EN
A77
O CMOS
3.3V / 3.3V
Connect to enable control of LVDS panel power circuit
LVDS panel power enable
LVDS_BKLT_EN
B79
O CMOS
3.3V / 3.3V
Connect to enable control of LVDS panel backlight power circuit.
LVDS panel backlight enable
LVDS_BKLT_CTRL
B83
O CMOS
3.3V / 3.3V
Connect to brightness control of LVDS panel backlight power circuit.
LVDS panel backlight brightness control
LVDS_I2C_CK
A83
I/O OD CMOS
3.3V / 3.3V
PU 2.2K to 3.3V
Connect to DDC clock of LVDS panel
I2C clock output for LVDS display use
LVDS_I2C_DAT
A84
I/O OD CMOS
3.3V / 3.3V
PU 2.2K to 3.3V
Connect to DDC data of LVDS panel
I2C data line for LVDS display use

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Chapter 3
HARDWARE INSTALLATION
User's Manual | TGU968
eDP Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
eDP_TX2+
A71
O LV_DIFF AC coupled off module
Connect to eDP connector
eDP differential pairs
eDP_TX2-
A72
eDP_TX1+
A73
O LV_DIFF AC coupled off module
Connect to eDP connector
eDP_TX1-
A74
eDP_TX0+
A75
O LV_DIFF AC coupled off module
Connect to eDP connector
eDP_TX0-
A76
eDP_TX3+
A81
O LV_DIFF
AC coupled off module
Connect to eDP connector
eDP_TX3-
A82
eDP_VDD_EN
A77
O CMOS
3.3V / 3.3V
Connecto to enable eDP power.
eDP power enable
eDP_BKLT_EN
B79 I/O LV_DIFF AC couple off module Connect to enable control of eDP backlight power circuit. eDP backlight enable
eDP_BKLT_CTRL
B83
O CMOS
3.3V / 3.3V
Connect to brightness control of eDP panel backlight power circuit.
eDP backlight brightness control
eDP_AUX+
A83
I/O LV_DIFF
AC
couple off module
eDP AUX+
eDP AUX-
I2C clock output for LVDS display use
eDP_AUX-
A84
I/O LV_DIFF
I2C data line for LVDS display use
eDP_HPD
A87 I CMOS
3.3V
/ 3.3V
eDP connector hot plug detection Detection of Hot Plug/ Unplug and notification of the link layer
LPC & eSPI Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
LPC_AD0
B4
I/O CMOS 3.3V / 3.3V
LPC_ADC0 /ESPI to LPC bridge
Connect to LPC device
LPC & eSPI multi-function pin with bridge
LPC_AD1
B5
LPC_ADC1 /ESPI to LPC bridge
LPC_AD2
B6
LPC_ADC2 /ESPI to LPC bridge
LPC_AD3
B7
LPC_ADC3 /ESPI to LPC bridge
LPC_FRAME#
B3
O CMOS
3.3V / 3.3V
LPC_ADC0 /ESPI_CS0#
LPC frame indicates the start of an LPC cycle
LPC_DRQ0#
B8
I CMOS 3.3V / 3.3V
LPC_ADC0 /ESPI_ALERT0#
NA (No support)
LPC_DRQ1#
B9
LPC_ADC0 /ESPI_ALERT1#
LPC_SERIRQ
A50
I/O CMOS
3.3V / 3.3V
LPC_SERIRQ/ ESPI_CS1#
LPC serial interrupt
LPC_CLK
B10
O CMOS
3.3V / 3.3V
LPC_CLK/ESPI_CK
LPC clock output - 33MHz nominal
SPI Signals Descriptions
Signal
Pin#
Module Pin Type
Pwr Rail /Tolerance
TGU968
Carrier Board
Description
SPI_CS#
B97
O CMOS
3.3V Suspend/3.3V
Connect a series resistor 33Ω to Carrier Board SPI Device CS# pin
Chip select for Carrier Board SPI - may be sourced from chipset SPI0 or SPI1
SPI_MISO
A92
I CMOS
3.3V Suspend/3.3V
Connect a series resistor 33Ω to Carrier Board SPI Device SO pin
Data in to Module from Carrier SPI
SPI_MOSI
A95
O CMOS
3.3V Suspend/3.3V
Connect a series resistor 33Ω to Carrier Board SPI Device SI pin
Data out from Module to Carrier SPI
SPI_CLK
A94
O CMOS
3.3V Suspend/3.3V
Connect a series resistor 33Ω to Carrier Board SPI Device SCK pin
Clock from Module to Carrier SPI
SPI_POWER A91 O 3.3V Suspend/3.3V
Power supply for Carrier Board SPI – sourced from Module – nominally 3.3V. The
Module shall provide a minimum of 100mA on SPI_POWER.
Carriers shall use less than 100mA of SPI_POWER. SPI_POWER shall only
be used to power SPI devices on the Carrier
BIOS_DIS0# A34
I CMOS NA
Selection straps to determine the BIOS boot device.
The Carrier should only float these or pull them low, please refer to
COM Express Module Base Specification Revision 2.1 for strapping options of BIOS disable signals.
BIOS_DIS1# B88
BIOS
DIS1#
BIOS
DIS0#
Chipset
SPI CS1#
Destination
Chipset
SPI CS0#
Destination
Carrier
SPI_CS#
SPI
Descriptor
Bios
Entry
Ref Line
1
1
Module
Module
High
Module
SPI0/SPI1
0
1
0
Module
Module
High
Module
Carrier FWH
1
0
1
Module
Carrier
SPI0
Carrier
SPI0/SPI1
2
0
0
Carrier
(Default)
Module
(Default)
SPI1
(Default)
Module
(Default)
SPI0/SPI1
(Default)
3