Tews Technologies TPCE261-10R User manual

The Embedded I/O Company
TPCE261
PCI Express x1 PMC Carrier
Version 1.0
User Manual
Issue 1.0.2
January 2022
TEWS TECHNOLOGIES GmbH
Am Bahnhof 7 25469 Halstenbek, Germany
Phone: [phone] Fax: [phone]
e-mail: [email protected] www.tews.com

TPCE261 User Manual Issue 1.0.2 Page 2 of 20
TPCE261-10R
PCI Express x1 Carrier for 32-Bit, 33/66MHz PMC
Modules, 5V PMC I/O signaling voltage, +12V power
supply from PCIe connector used
TPCE261-11R
PCI Express x1 Carrier for 32-Bit, 33/66MHz PMC
Modules, 3.3V PMC I/O signaling voltage, +12V power
supply from PCIe connector used
TPCE261-20R
PCI Express x1 Carrier for 32-Bit, 33/66MHz PMC
Modules, 5V PMC I/O signaling voltage, +12V power
supply from external PCIe graphics power connector
used
TPCE261-21R
PCI Express x1 Carrier for 32-Bit, 33/66MHz PMC
Modules, 3.3V PMC I/O signaling voltage, +12V power
supply from external PCIe graphics power connector
used
This document contains information, which is
proprietary to TEWS TECHNOLOGIES GmbH. Any
reproduction without written permission is forbidden.
TEWS TECHNOLOGIES GmbH has made any
effort to ensure that this manual is accurate and
complete. However TEWS TECHNOLOGIES GmbH
reserves the right to change the product described
in this document at any time without notice.
TEWS TECHNOLOGIES GmbH is not liable for any
damage arising out of the application or use of the
device described herein.
Style Conventions
Hexadecimal characters are specified with prefix 0x,
i.e. 0x029E (that means hexadecimal value 029E).
For signals on hardware products, an ‚Active Low’ is
represented by the signal name with # following, i.e.
IP_RESET#.
Access terms are described as:
W Write Only
R Read Only
R/W Read/Write
R/C Read/Clear
R/S Read/Set
2022 by TEWS TECHNOLOGIES GmbH
All trademarks mentioned are property of their respective owners.

TPCE261 User Manual Issue 1.0.2 Page 3 of 20
Issue Description Date
1.0.0 Initial Issue December 2018
1.0.1 Clarified the maximum PCIe link speed.
The mentioning of PCIe Gen2 might imply a link speed of
5GT/s but the XIO2001 is only capable of 2.5GT/s link speed
March 2019
1.0.2 Order Options -2xR: removed the PCIe VGA power connector
adapter cable
January 2022

TPCE261 User Manual Issue 1.0.2 Page 4 of 20
Table of Contents
1 PRODUCT DESCRIPTION ........................................................................................... 6
2 TECHNICAL SPECIFICATION ..................................................................................... 7
3 HANDLING AND OPERATING INSTRUCTIONS ......................................................... 8
ESD Protection ................................................................................................................................8
Installation of TPCE261-2xR ..........................................................................................................8
4 PMC INTERFACE ......................................................................................................... 9
Installation of a PMC Module .........................................................................................................9
PCI Signaling Voltage .....................................................................................................................9
PCIe-to-PCI Bridge Header...........................................................................................................10
PCI Bus Device Number Mapping ...............................................................................................10
PCI Clock Frequency ....................................................................................................................10
PMC BUSMODE[4:1] Signals .......................................................................................................11
Stable Power Supply.....................................................................................................................11
Power Limits for PMC Modules ...................................................................................................11
5 INDICATORS .............................................................................................................. 12
LED Indicators...............................................................................................................................12
6 JTAG ........................................................................................................................... 13
USB Type C Connector ................................................................................................................13
JTAG voltage for PMC Module ....................................................................................................13
7 PIN ASSIGNMENTS ................................................................................................... 14
J11 – PMC Connector ...................................................................................................................14
J12 – PMC Connector ...................................................................................................................15
J14 to X4 – PMC I/O Connector ...................................................................................................16
X5 – 14-pin JTAG Header .............................................................................................................18
J4 – XIO2001 JTAG Connector ....................................................................................................19
X3 – PCIe VGA Graphics Power Connector ...............................................................................20

TPCE261 User Manual Issue 1.0.2 Page 5 of 20
List of Figures
FIGURE 1-1 : TPCE261 BLOCK DIAGRAM .....................................................................................................6
FIGURE 5-1 : ON-BOARD LED PLACEMENT ...............................................................................................12
FIGURE 6-1 : JTAG VOLTAGE ROTARY SELECTOR SWITCH LOCATION (TOP VIEW OF TPCE261) ...13
FIGURE 7-1 : J14 REAR-I/O CONNECTOR LOCATION (TOP VIEW OF TPCE261) ...................................17
FIGURE 7-2 : JTAG CONNECTOR LOCATION (TOP VIEW OF TPCE261) .................................................18
FIGURE 7-3 : J4 – XIO2001 JTAG CONNECTOR POSITION (TOP VIEW OF TPCE261) ...........................19
List of Tables
TABLE 2-1 : TECHNICAL SPECIFICATION.....................................................................................................7
TABLE 4-1 : TPCE261 PCI SIGNALING VOLTAGE KEYING...........................................................................9
TABLE 4-2 : TPCE261 PCI SIGNALING VOLTAGE FACTORY DEFAULTS ...................................................9
TABLE 4-3 : PCIE ID CONFIGURATION........................................................................................................10
TABLE 4-4 : PCI BUS DEVICE NUMBER MAPPING......................................................................................10
TABLE 4-5 : TPCE261 PMC BUSMODE[4:1] SIGNALS .................................................................................11
TABLE 4-6 : CURRENT LIMITS FOR THE PMC MODULES.........................................................................11
TABLE 5-1 : ON-BOARD LED DESCRIPTION...............................................................................................12
TABLE 6-1 : ROTARY SELECTOR SWITCH CONFIGURATION..................................................................13
TABLE 7-1 : PMC J11/P11 PIN ASSIGNMENT...............................................................................................14
TABLE 7-2 : PMC J12/P12 PIN ASSIGNMENT...............................................................................................15
TABLE 7-3 : X4 - J14 I/O PIN ASSIGNMENT.................................................................................................16
TABLE 7-4 : X5 – 14-PIN JTAG HEADER PIN ASSIGNMENT ......................................................................18
TABLE 7-5 : J4 CONNECTOR TYPE .............................................................................................................19
TABLE 7-6 : X3 – 6-PIN AUXILLIARY POWER CONNECTOR .....................................................................20

TPCE261 User Manual Issue 1.0.2 Page 6 of 20
1 Product Description
The TPCE261 is a standard height PCI Express Revision 2.0 compatible module that provides one slot for a
single-width PMC module used to build modular, flexible and cost effective I/O solutions for all kinds of
applications like process control, medical systems, telecommunication and traffic control. The TPCE261 is a
versatile solution to upgrade well known PMC I/O solutions to the PCI Express signaling standard.
On the PCI Express side, an x1 link with 2.5GT/s speed to the host board is provided.
The bridging between the system host board and the PMC slot is handled by the transparent PCIe-to-PCI
Bridge XIO2001 from Texas Instruments.
On the PMC side, PCI signaling voltages of 3.3V (TPCE261-x1R) and 5V (TPCE261-x0R) are supported. 32-
bit PCI accesses are possible with 33MHz or 66MHz.
The TPCE261 supports PMC front-panel I/O and also PMC P14 Rear-I/O through a 68-pin ERNI SMC
1.27mm flat cable connector.
The PCIe edge card connector provides +12V and +3.3V. All TPCE261-xx variants do not use the +3.3V at
all. The TPCE261-1xR uses the +12V of the PCIe edge card connector to generate all four power supply
voltages for the PMC slot (+3.3V, +5V, +12V and -12V). According to the PCIe specification, a PCIe x1 card
is limited to 6W on the +12V which allows to operate most of the available 32-bit 33/66 MHz PMC modules
on the TPCE261-1xR.
For PMC modules with increased power requirements, the TPCE261-2xR offer an additional PCIe Graphics
Power Connector to supply the +12V for generating all the power supply voltages for the PMC slot providing
a power of up to 25W.
PCIe (x1)
PCI
32 bit
33/66 MHz
PCIe: +3.3V
PCIe: +12V
PCI Express
to
PCI
Bridge
-12V DC
5V DC
3.3V DC
+12V Graphics
Power
Connector
VI/O
+3.3V
+5V
-12V
+12V
TPCE261-2x
TPCE261-1x
TPCE261-x0
TPCE261-x1
I/O
J12
J11
Figure 1-1 : TPCE261 Block Diagram

TPCE261 User Manual Issue 1.0.2 Page 7 of 20
2 Technical Specification
Mechanical and Electrical Interfaces
PCI Express PCI Express x1, Revision 2.0
max. 2.5GT/s link speed
Standard Height
Half-Length
PMC Slot PCI Mezzanine Card (PMC) Interface conforming to
IEEE P1386/P1386.1
Single-Width
PCI Rev. 2.3 compliant
33/66 MHz / 32-Bit PCI
3.3V and 5V PCI Signaling Voltage
PMC Interface
Number of PMC Slots 1
PMC I/O Access PMC Front Panel I/O
PMC P14 Rear-I/O through 68-pin ERNI SMC, right angle male,
1.27mm pitch connector
Maximum Current for P14 Rear I/O Lines is 0.5A!
On-Board Devices
PCIe-to-PCI Bridge XIO2001 (Texas Instruments)
Physical Data
Power Requirements - @ +3.3V DC
100mA maximum @ +12V DC
Additional power is required by the PMC Module!
Power Stable for PMC Slot The power supply for the PMC slot is stable approximately 5ms
after the system power supply is stable.
Maximum Power for PMC Slot The maximum power available for a PMC module is variant
dependent. Please see chapter “Power Limits for PMC Modules”
for detailed information.
Temperature Range Operating
Storage
-40°C to +85°C
-40°C to +85°C
MTBF TPCE261-1xR: 599000h
TPCE261-2xR: 533000h
MTBF values shown are based on calculation according to MIL-HDBK-217F and
MIL-HDBK-217F Notice 2; Environment: GB20°C.
The MTBF calculation is based on component FIT rates provided by the
component suppliers. If FIT rates are not available, MIL-HDBK-217F and
MIL-HDBK-217F Notice 2 formulas are used for FIT rate calculation.
Humidity 5 – 95 % non-condensing
Weight TPCE261-1xR: 97 g
TPCE261-2xR: 99 g
Table 2-1 : Technical Specification

TPCE261 User Manual Issue 1.0.2 Page 8 of 20
3 Handling and Operating Instructions
ESD Protection
The TPCE261 is sensitive to static electricity. Packing, unpacking
and all other handling of the TPCE261 has to be done in an ESD/EOS
protected Area.
Installation of TPCE261-2xR
For the TPCE261-2xR variants, it is imperative to always connect a
PCI Express VGA power connector to the TPCE261, even if no PMC
is mounted.

TPCE261 User Manual Issue 1.0.2 Page 9 of 20
4 PMC Interface
Installation of a PMC Module
The PMC modules are mounted to the TPCE261 prior to installation into the system.
Before installing a PMC module, be sure that the power supply for the TPCE261 is turned off.
The components are Electrostatic Sensitive Devices (ESD). Use an anti-static mat connected to
a wristband when handling or installing the components.
After the PMC module has been installed, it can be secured on the TPCE261 using the mounting screws that
come with the PMC module. There are four screw mounting locations, two at the PMC front panel and two at
the standoffs near the PMC bus connectors.
PCI Signaling Voltage
PMC modules are specified either for 3.3V only, 5V only or universal (3.3V or 5V) PCI signaling voltage
operation.
The TPCE261 onboard V_I/O voltage level defines the PCI signaling voltage level for the TPCE261 PCI bus.
A voltage keying pin indicates (and also selects) the voltage level and prevents incompatible PMC modules
from being plugged onto the carrier.
Table 4-1 : TPCE261 PCI Signaling Voltage Keying
V_I/O Configuration 5V Keying Pin 3.3V Keying Pin
5V (-x0R) Installed Not Installed
3.3V (-x1R) Not Installed Installed
Table 4-2 : TPCE261 PCI Signaling Voltage Factory Defaults

TPCE261 User Manual Issue 1.0.2 Page 10 of 20
PCIe-to-PCI Bridge Header
ID Type ID Setting (Description)
Vendor ID 0x104C (Texas Instruments)
Device ID 0x8231 (XIO2001)
Revision ID 0x00
Subsystem ID 0x0000
Subsystem Vendor ID 0x0000
Class Code 0x060400 (PCI-to-PCI Bridge)
Table 4-3 : PCIe ID Configuration
PCI Bus Device Number Mapping
The PCI bus device number of the PMC slot is defined by configuration type translation of the PCI-Express
to PCI Bridge.
By default, the PMC slot is mapped to the bus device number 0x0.
PCI Bus Device
Number (HEX)
PCI AD Line
used as PMC
IDSEL
Purpose
0x0 16 Default IDSEL for PMC Slot
0x1
0x2
0x3
17
18
19
Not used on TPCE261
0x4 20 Optional IDSEL for PMC Slot
0x5
-
0xF
21
-
31
Not used on TPCE261
Table 4-4 : PCI Bus Device Number Mapping
PCI Clock Frequency
The TPCE261 supports 66 MHz PCI clock frequency. The actual PCI clock frequency on the TPCE261 is
configured by the plugged PMC module. If the plugged PMC module supports 66 MHz operation, the PCI
bus will operate with 66 MHz; otherwise it will operate with 33 MHz.

TPCE261 User Manual Issue 1.0.2 Page 11 of 20
PMC BUSMODE[4:1] Signals
The BUSMODE[4:1]# signals are defined in the IEEE1386 (CMC) specification and allow a host to identify
the used mezzanine card type. The TPCE261 supports PCI capable cards only.
The TPCE261 indicates the “PMC only” support with the signal levels presented in the table below. The PMC
card should decode these signals and drive out a logic “0” on BUSMODE1#.
An onboard LED indicates if a valid PMC is detected.
Signal Logic Level
BUSMODE4# Pulled LOW
BUSMODE3# Pulled LOW
BUSMODE2# Pulled HIGH
Table 4-5 : TPCE261 PMC BUSMODE[4:1] Signals
Stable Power Supply
The power supply for the PMC slot is stable approximately 5ms after the system power supply is stable.
Power Limits for PMC Modules
The following current limits have to be taken into account when choosing the appropriate TPCE261 for the
power requirements of the XMC module.
TPCE261 Voltage Current Limits
TPCE261-1xR
3.3V 3 A
5V 2 A
+12V 200 mA
-12V 200 mA
TPCE261-2xR
3.3V 8 A
5V 5 A
+12V 200 mA
-12V 200 mA
Table 4-6 : Current Limits for the PMC Modules

TPCE261 User Manual Issue 1.0.2 Page 12 of 20
5 Indicators
LED Indicators
The TPCE261 provides a couple of board-status LEDs as shown below. All LEDs are labeled on board for
better recognition.
Figure 5-1 : On-board LED Placement
Text Description Color State Description
1.5V 1.5V Power Good Green Off 1.5V Power Supply is not OK
On 1.5V Power Supply is OK
3.3V 3.3V Power Good Green Off 3.3V Power Supply is not OK
On 3.3V Power Supply is OK
5.0V 5.0V Power Good Green Off 5.0V Power Supply is not OK
On 5.0V Power Supply is OK
-12V -12V Power Good Green Off -12V Power Supply is not OK
On -12V Power Supply is OK
PMC PMC Present LED Green Off No PMC Module detected
On PMC Module detected
Table 5-1 : On-board LED Description

TPCE261 User Manual Issue 1.0.2 Page 13 of 20
6 JTAG
There is one JTAG chain present on the TPCE261. This chain connects the 14-pin JTAG header with the
PMC slot. There are no JTAG-capable devices onboard the TPCE261, so the PMC is the only “device” in this
chain.
TDI and TDO of the PCIe connector will be interconnected on-board to maintain system board JTAG-Chain
integrity.
USB Type C Connector
The TPCE261 offers an USB Type C Receptacle as an alternative to the 14-pin flat cable header. This USB
receptacle is connected to an FTDI FT2232H chip that translates the USB signals to JTAG signals, allowing
access to the PMC JTAG chain with a second source programming software and a simple USB cable.
This USB connector is not mounted in any order options by default. Please contact TEWS if you are
interested in using it.
JTAG voltage for PMC Module
The JTAG signaling voltage level on the 14-pin header is always 3.3V.
However, the JTAG voltage that is used for the PMC module, can be setup by a rotary selector switch on the
TPCE261; it will be translated to the 3.3V on the JTAG connector.
Position PMC JTAG Voltage
0 +1.5V
1 +1.8V
2 +2.5V
3 +3.3V
Table 6-1 : Rotary Selector Switch configuration
Figure 6-1 : JTAG voltage rotary selector switch location (Top View of TPCE261)

TPCE261 User Manual Issue 1.0.2 Page 14 of 20
7 Pin Assignments
J11 – PMC Connector
Pin Signal Signal Pin
1 TCK -12V 2
3 GND INTA# 4
5 INTB# INTC# 6
7 BUSMODE1# +5V 8
9 INTD# PCI-RSVD 10
11 GND 3.3Vaux 12
13 CLK GND 14
15 GND GNT# 16
17 REG# +5V 18
19 V (I/O) AD[31] 20
21 AD[28] AD[27] 22
23 AD[25] GND 24
25 GND C/BE[3]# 26
27 AD[22] AD[21] 28
29 AD[19] +5V 30
31 V (I/O) AD[17] 32
33 FRAME# GND 34
35 GND IRDY# 36
37 DEVSEL# +5V 38
39 GND LOCK# 40
41 PCI-RSVD PCI-RSVD 42
43 PAR GND 44
45 V (I/O) AD[15] 46
47 AD[12] AD[11] 48
49 AD[09] +5V 50
51 GND C/BE[0]# 52
53 AD[06] AD[05] 54
55 AD[04] GND 56
57 V (I/O) AD[03] 58
59 AD[02] AD[01] 60
61 AD[00] +5V 62
63 GND REQ64# 64
Table 7-1 : PMC J11/P11 Pin Assignment

TPCE261 User Manual Issue 1.0.2 Page 15 of 20
J12 – PMC Connector
Pin Signal Signal Pin
1 +12V TRST# 2
3 TMS TDO 4
5 TDI GND 6
7 GND PCI-RSVD 8
9 PCI-RSVD PCI-RSVD 10
11 BUSMODE2# +3.3V 12
13 RST# BUSMODE3# 14
15 +3.3V BUSMODE4# 16
17 PME# GND 18
19 AD[30] AD[29] 20
21 GND AD[26] 22
23 AD[24] +3.3V 24
25 IDSEL AD[23] 26
27 +3.3V AD[20] 28
29 AD[18] GND 30
31 AD[16] C/BE[2]# 32
33 GND PMC-RSVD 34
35 TRDY# +3.3V 36
37 GND STOP# 38
39 PERR# GND 40
41 +3.3V SERR# 42
43 C/BE[1]# GND 44
45 AD[14] AD[13] 46
47 M66EN AD[10] 48
49 AD[08] +3.3V 50
51 AD[07] PMC-RSVD 52
53 +3.3V PMC-RSVD 54
55 PMC-RSVD GND 56
57 PMC-RSVD PMC-RSVD 58
59 GND PMC-RSVD 60
61 ACK64# +3.3V 62
63 GND PMC-RSVD 64
Table 7-2 : PMC J12/P12 Pin Assignment

TPCE261 User Manual Issue 1.0.2 Page 16 of 20
J14 to X4 – PMC I/O Connector
Pin Count 68
Connector Type ERNI SMC, right angle male, 1.27mm pitch
Source & Order Info ERNI 154766
Signal J14 Pin X5
ERNI Pin Connector view X5 ERNI Pin
J14 Pin Signal
I/O 2 (I/O00-) 2 b1 a1 1 I/O 1 (I/O00+)
I/O 4 (I/O01-) 4 b2 a2 3 I/O 3 (I/O01+)
I/O 6 (I/O02-) 6 b3 a3 5 I/O 5 (I/O02+)
I/O 8 (I/O03-) 8 b4 a4 7 I/O 7 (I/O03+)
I/O 10 (I/O04-) 10 b5 a5 9 I/O 9 (I/O04+)
I/O 12 (I/O05-) 12 b6 a6 11 I/O 11 (I/O05+)
I/O 14 (I/O06-) 14 b7 a7 13 I/O 13 (I/O06+)
I/O 16 (I/O07-) 16 b8 a8 15 I/O 15 (I/O07+)
I/O 18 (I/O08-) 18 b9 a9 17 I/O 17 (I/O08+)
I/O 20 (I/O09-) 20 b10 a10 19 I/O 19 (I/O09+)
I/O 22 (I/O10-) 22 b11 a11 21 I/O 21 (I/O10+)
I/O 24 (I/O11-) 24 b12 a12 23 I/O 23 (I/O11+)
I/O 26 (I/O12-) 26 b13 a13 25 I/O 25 (I/O12+)
I/O 28 (I/O13-) 28 b14 a14 27 I/O 27 (I/O13+)
I/O 30 (I/O14-) 30 b15 a15 29 I/O 29 (I/O14+)
I/O 32 (I/O15-) 32 b16 a16 31 I/O 31 (I/O15+)
I/O 34 (I/O16-) 34 b17 a17 33 I/O 33 (I/O16+)
I/O 36 (I/O17-) 36 b18 a18 35 I/O 35 (I/O17+)
I/O 38 (I/O18-) 38 b19 a19 37 I/O 37 (I/O18+)
I/O 40 (I/O19-) 40 b20 a20 39 I/O 39 (I/O19+)
I/O 42 (I/O20-) 42 b21 a21 41 I/O 41 (I/O20+)
I/O 44 (I/O21-) 44 b22 a22 43 I/O 43 (I/O21+)
I/O 46 (I/O22-) 46 b23 a23 45 I/O 45 (I/O22+)
I/O 48 (I/O23-) 48 b24 a24 47 I/O 47 (I/O23+)
I/O 50 (I/O24-) 50 b25 a25 49 I/O 49 (I/O24+)
I/O 52 (I/O25-) 52 b26 a26 51 I/O 51 (I/O25+)
I/O 54 (I/O26-) 54 b27 a27 53 I/O 53 (I/O26+)
I/O 56 (I/O27-) 56 b28 a28 55 I/O 55 (I/O27+)
I/O 58 (I/O28-) 58 b29 a29 57 I/O 57 (I/O28+)
I/O 60 (I/O29-) 60 b30 a30 59 I/O 59 (I/O29+)
I/O 62 (I/O30-) 62 b31 a31 61 I/O 61 (I/O30+)
I/O 64 (I/O31-) 64 b32 a32 63 I/O 63 (I/O31+)
GND - b33 a33 - GND
GND - b34 a34 - GND
Table 7-3 : X4 - J14 I/O Pin Assignment
All +/- signal pairs are routed differential, impedance controlled and equal-lengthed.

TPCE261 User Manual Issue 1.0.2 Page 17 of 20
Figure 7-1 : J14 Rear-I/O Connector Location (Top View of TPCE261)

TPCE261 User Manual Issue 1.0.2 Page 18 of 20
X5 – 14-pin JTAG Header
The following JTAG connector with the below mentioned pin mapping will be provided.
Pin-Count 14
Connector Type 14-position 2mm flat cable header.
Compatible with XILINX USB programmer flat cable.
Source & Order Info Molex 87832-142 (180°)
Pin Assignment
Description Pin Connector View Pin Description
NC 1
12
13 14
2 VREF
GND 3 4 TMS
GND 5 6 TCK
GND 7 8 TDO
GND 9 10 TDI
GND 11 12 NC
HDR_EN# *) 13 14 NC
Table 7-4 : X5 – 14-pin JTAG Header Pin Assignment
*) The JTAG cable has to connect this pin to GND
Figure 7-2 : JTAG Connector Location (Top View of TPCE261)

TPCE261 User Manual Issue 1.0.2 Page 19 of 20
J4 – XIO2001 JTAG Connector
This connector is for factory use only, do not connect.
Figure 7-3 : J4 – XIO2001 JTAG Connector Position (top view of TPCE261)
Pin-Count 10
Connector Type 10 pin header, 2.54mm grid
Table 7-5 : J4 Connector Type

TPCE261 User Manual Issue 1.0.2 Page 20 of 20
X3 – PCIe VGA Graphics Power Connector
The TPCE261-2x variants provide an additional PCIe VGA Graphics Power Connector for increased power
requirements.
Pin-Count 6
Connector Type 6-position (2x3) PCI Express auxiliary power connector
Mini-Fit Jr. Power Connector
Source & Order Info Molex 45732-0001
Pin Assignment
Description Pin Connector View Pin Description
+12V 3
1
3
2
4
6
5
6 GND
+12V 2 5 GND *)
+12V 1 4 GND
Table 7-6 : X3 – 6-pin Auxilliary Power Connector
*) The TPCE261 connects this pin to GND and does not do any power supply detection with this pin.