40-Pin Debug Connector; Table 2: 40-Pin Debug Connector Pin Definition - ADLINK Technology Express-KL2 User Manual

4.2.

40-pin Debug Connector

FPC Connector Type: FCI 59GF Flex 10042867
Pin Orientation
1
40-pin Debug Connector Pin Definition on the COM Express Module
Pin Interface Signal
40 SPI Program VCC_SPI_IN
interface
39 GND
38 SPI_BIOS_CS
0#
37 SPI_BIOS_CS
1#
36 SPI_BIOS_MI
SO
35 SPI_BIOS_M
OSI
34 SPI_BIOS_CL
K
33 LPC Bus 3V3_LPC
32 GND
31 BIOS_DIS0
30 RST#
29 CLK33_LPC
28 LPC_FRAME
#
27 LPC_AD3
26 LPC_AD2
25 LPC_AD1
24 LPC_AD0
23 BMC 3.3V_BMC
Program
interface
22 3.3V_BMC
21 GND
Note: The pin definition on the debug module is the inverse of that on the COM Express module.
Connector Pinouts on Module
40
Remark
SPI Power Input from flash tool
to module. HW need add MOS
FET to switch SPI power for
SPI ROM
System power 3.3V provide
from COM module
always power 3.3V provide
from COM module
always power 3.3V provide
from COM module
always power 3.3V provide
from COM module

Table 2: 40-pin Debug Connector Pin Definition

Pin Interface Signal
20 BMC TXD6
Program
interface
(cont'd)
19 RXD6
18 FUMD0
17 RESET_IN#
16 DATA
15 CLK
14 OCD0A
13 OCD0B
12 Test points PWRBTN#
11 SYS_RESET#
10 CB_RESET#
9 CB_PWROK
8 SUS_S3#
7 SUS_S4#
6 SUS_S5#
5 BMC POSTWDT_DIS
Debug #
signals
4 SEL_BIOS
3 BIOS_MODE
2 BMC_STATUS
1 Reserved
Express-KL2
Remark
Include a jumper to
connect OCD0A via 1K0
pull-up to 3.3V_BMC
Include a jumper to
connect OCD0A via 1K0
pull-up to 3.3V_BMC
Connect to Jumper for
Debug
Connect to Jumper for
Debug
Connect to Jumper for
Debug
29