Advantech ROM-7420 User manual

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ROM-7420 Evaluation Kit
Quick Start Guide

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Contents
1. Copyright Notice
2. Introduction
3. Quick installation of ROM-7420 evaluation kit
3.1 Correct handling process
3.2 Incorrect handling process
3.3 Jumper setting
3.4 I/O Specification
3.4.1 ROM-7420 evaluation kit overview
3.4.2 Connectors and Headers
3.4.3 Power Distribution

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1. Copyright Notice
This document is copyrighted, 2013 by Advantech Co., Ltd. All rights are reserved. Advantech Co.,
Ltd. reserves the right to make improvements to the products described in this manual at any time.
Specifications are thus subject to change without notice.
No part of this document may be reproduced, copied, translated, or transmitted in any form or by
any means without the prior written permission of Advantech Co., Ltd. Information provided in this
manual is intended to be accurate and reliable. However, Advantech Co., Ltd. assumes no
responsibility for its use, or for any infringements upon the rights of third parties which may result
from its use.
All the trademarks of products and companies mentioned in this document belong to their
respective owners.
Copyright © 1983-2013 Advantech Co., Ltd. All Rights Reserved

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2. Introduction
This document is to introduce ROM-7420 evaluation kit and let the end users start module
evaluation easily and smoothly. It includes 2 parts of concepts: Correct handling process and the
detail input/output connector and pin header specifications.
ROM-7420 evaluation kit includes ROM-7420 RISC Q7 module and ROM-DB7500 Advantech RISC Q7
Evaluation Carrier Board. It is highly recommended to completely read this document before
starting ROM-7420 evaluation since it includes critical information as pin define, handling process
and connector information. In the meanwhile, you should also comply with all warming notices and
regulations you read in this document, it can prevent damaging ROM-7420 evaluation kit and
spoiling those devices being connected.
Inappropriate installation may cause physical damage to ROM-7420 and its carrier board
ROM-DB7500, result it function-loss or abnormal behaviors as kernel panic or unstable electric
currents in the evaluation kit. In this case, we would identify this inappropriate use of evaluation kit
as human negligence and we are afraid it is excluded from our quality assurance policy.
For more information about Advantech’s policy and customer services, please visit Advantech
official website: www.advantech.com.tw

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3. Quick installation of ROM-7420 evaluation kit
3.1 Correct Handling Process
A. Install the ROM-7420 module board to carrier board at a 30 degree angle.
B. Press down the module board and make sure the 4 screw holes are aligned with the carrier
board

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C. Adjust the 4 screws clockwise to fix them in place

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3.2 Incorrect Handling Process
A. Install ROM-7420 module board upside down
B. Install ROM-7420 through horizontal move without preventing interferes with the connectors on
carrier board

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C. Fix ROM-7420 to carrier board without using M2.5x3 screws

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3.3 Jumper setting
ROM-7420 module board
SW2 Boot Rom Selection
Part Number 1600000202
Footprint SW_2x2P_50_161X315
Description DIP SW CHS-02TB(20) SMD 4P SPST P=1.27mm W=5.4mm
Pin Pin Name
1 +3V
2 GND
This switch is designed for selecting boot up method. With Switch 1 on and Switch 2 off, the board boots
from on board eMMC; with Switch 1 off and Switch 2 on, it boots from SD/MMC card.
Boot Rom selection
SW2
1
2
SPI NOR
ON
OFF
SD Slot
OFF
ON

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ROM-DB7500 Evaluation Carrier Board
<LVDS>
LVDS_VDD_SLT1 Panel power Setting
Description Panel power for LVDS1
Setting Function
(1-2) +3.3V *
(3-4) +5V
(5-6) +12V
LVDS_VDD_SLT2 Panel power Setting
Description Panel power for LVDS2
Setting Function
(1-2) +3.3V *
(3-4) +5V
(5-6) +12V
LVDS_BKLT_SLT1 Backlight power Setting
Description Panel power for LVDS_PWR1
Setting Function
(1-2) +5V *
(2-3) +12V
LVDS_BKLT_SLT2 Backlight power Setting
Description Panel power for LVDS_PWR2
Setting Function
(1-2) +5V *
(2-3) +12V
2
4
6
1
3
5
2
4
6
1
3
5

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<CAN bus>
CN19 connect 120ohm termination resistor for CAN0
Description connect 120ohm termination resistor for CAN0
Setting Function
(1-2) connect 120ohm termination resistor for CAN0
CN20 connect 120ohm termination resistor for CAN1
Description connect 120ohm termination resistor for CAN1
Setting Function
(1-2) connect 120ohm termination resistor for CAN1 *
<SPI NOR>
CN21 chip select for SPI NOR flash
Description chip select for SPI NOR flash
Setting Function
(1-2) connect SPI CS0# to SPI NOR flash chip select
(3-4) connect SPI CS1# to SPI NOR flash chip select
< Module insertion detect>
CN17 Module insertion detect
Description Module insertion detect
Setting Function
(1-2) enable module insertion detect function

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3.4 I/O specification
3.4.1 ROM-7420 evaluation kit overview
A
M
H
Q
H
R
H
L
H
P
H
O
H
B
C
D
E
F
G
H
I
J
K
T
U
V
N
H
AE
W
H
X
H
Y
H
Z
H
AA
AB
AD
AC
C
D
E
G
H
T
G
E

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ROM-DB7500 onboard connector
Item
Description
P/N
A
CYPRESS , CY7C65630-56LFXA, 4 Port USB Hub, 56-pin QFN 8
× 8 mm
B
Freescale, SGTL5000, I2S Audio Codec, 32-pin QFN 5.0 x 5.0
mm QFN
C
D-SUB 15-pin VGA female connector
D
HDMI Connector
E
Stacked USB+RJ45 receptacle connector with GbE
Transformer & LED
F
D-SUB 9-pin Can Bus male connector
G
D-SUB 9-pin GPIO Port female connector
H
2-port Audio Jack
I
DC-in Jack
J
MXM 230-pin socket for module board
K
LVDS Data Connector –40-pin
L
LVDS Inverter Power Connector -5-pin
M
PCI-E X1 Mini Card connector
N
SIM Card 6 pin Connector
O
SD Card Connector
P
USB 1x5 OTG Connector
Q
USB 1x4 2.54mm pin header (Black)
R
SATA 7-pin signal connector (Blue)
T
I2C 1x4 2.0mm Header
U
JTAG 2x10 2.54mm Header
V
UART Terminal Connector
W
System Fan Header
X
Front Panel Header
Y
Main Power Connector (ATX 24 pin PSU connector)
Z
Power Connector (ATX 4 pin PSU connector)
AA
Battery Holder
AB
Power On Button
AC
Sleep Button
AD
Reset Button
AE
Watchdog Triger Button

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3.4.2 Connectors and Headers
Back panel connectors
External IO Connector
Item
Description
P/N
A
DC Jack
B
CAN Bus 1
C
CAN Bus 2
D
VGA Port
E
HDMI Port
F
GPIO Port
G
NIC Port 0 (GbE)
H
USB 2.0 Port 2 (lower) and 1 (upper)
I
Line-Out Port
J
MIC-In Port
A. DC Jack Connector
Please insert 12V power adapter through this connector.
Pin
Signal
1
+12V
Shield
GND

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B&C CAN Bus
2 CAN bus with 5V level
Pin
Signal
1
2
D-
3
4
5
GND
6
GND
7
D+
8
9
D. VGA
Pin
Signal
1
RED
2
GREEN
3
BLUE
4
5
GND
6
GND
7
GND
8
GND
9
+5V
10
GND
11
12
DDC DATA
13
HSYNC
14
VSYNC
15
DDC CLK

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E. HDMI
Pin
Signal
1
TMDS_LANE2+
2
GND
3
TMDS_LANE2-
4
TMDS_LANE1+
5
GND
6
TMDS_LANE1-
7
TMDS_LANE0+
8
GND
9
TMDS_LANE0-
10
TMDS_CLK+
11
GND
12
TMDS_CLK-
13
14
15
DDC CLK
16
DDC DAT
17
GND
18
+5V
19
HPD
F. GPIO
9 pins GPIO controlled by software
Pin
Signal
1
GPI_0
2
GPI_1
3
GPI_2
4
GPI_3
5
GND
6
GPO_0
7
GPO_1
8
GPO_2
9
GPO_3

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G&H. RJ45 + USB connector
RJ45 with 10/100/1000 Ethernet plus two USB 2.0 Type A connectors
Pin
Signal
1
CT
2
MDI0+
3
MDI0-
4
MDI1+
5
MDI1-
6
MDI2+
7
MDI2-
8
MDI3+
9
MDI3-
10
GND
11
ACTIVE LED -
12
ACTIVE LED +
13
LINK 1000 -
14
LINK 100 -
15
+5V
16
USB PORT 2 -
17
USB PORT 2 +
18
GND
19
+5V
20
USB PORT 1 -
21
USB PORT 1 +
22
GND

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I&J. Audio
The red one if Line in and the port in lime is for earphone/speaker out
Pin
Signal
1
GND
2
3
4
5
MIC in
22
HP L
23
24
25
HP R

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Internal Connectors & Headers
K. LVDS Data Connector –40-pin
Please also refer to jumper setting in page 10 before connecting LVDS panel
Pin
Signal Name
Pin
Signal Name
1
VCC
21
LVDS_A2+
2
VCC
22
NC
3
GND
23
GND
4
GND
24
GND
5
VCC
25
LVDS_CLKA-
6
VCC
26
NC
7
LVDS_A0-
27
LVDS_CLKA+
8
NC
28
NC
9
LVDS_A0+
29
GND
10
NC
30
GND
11
GND
31
LVDS_DDC_CLK
12
GND
32
LVDS_DDC_DATA
13
LVDS_A1-
33
GND
14
NC
34
GND
15
LVDS_A1+
35
LVDS_A3-
16
NC
36
NC
17
GND
37
LVDS_A3+
18
GND
38
NC
19
LVDS_A2-
39
RSVD
20
NC
40
LVDSA_CTRL

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L. LVDS Inverter Power Connector
Please also refer to jumper setting in page 10 before connecting LVDS panel
Pin
Signal
Name
1
+12V
2
GND
3
BKL_EN
4
BKL_CTL
5
+5V
Q. Front Panel USB Header
Pin
Signal Name
1
+5 VDC
2
D -
3
D +
4
Ground
P. USB OTG
Pin
Signal Name
1
+5V
2
USB OTG D -
3
USB OTG D +
4
OTG ID
5
GND