Kontron COMe Eval Carrier QorIQ - Manual (Page 30)

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Quick Start Guide
COME-QEC-1
5.2.19 Miscellaneous Signal Connector J37
The pinrow header J37 provides access to various additional monitor and control signals (power, IRQs, temperature control,
etc.).
5.2.20 I2C/SM-Bus Evaluation Header J38
For cases where external I2C components require evaluation in conjunction with the COMe-cP2020/COMe-bP5020 the COME-
QEC-1 provides a 6-pin header with signals to connect to the COM Express® SM-Bus and I2C-Bus.
Before using this interface, verify that there is no address conflict with onboard devices of the respective COM Express® mod-
ule. Refer to the module's user guide for further information.
Table 15: Miscellaneous Signal Connector J37 Pinout
COMMENT SIGNAL PIN PIN SIGNAL COMMENT
V_3V3 1 2 V_3V3_STDBY
connected to the COM Express
SUS_S3# signal pin (8k2 pullup
to V_3V3_STDBY) SUS_S3# 3 4 PWRBTN# connected to the COM Express
PWRBTN# signal pin
connected to the COM Express
BATLOW# signal pin BATLOW# 5 6 reserved
reserved 7 8 reserved
GND 9 10 reserved
reserved 11 12 reserved
NC 13 14 NC
NC 15 16 WDT connected to the COM Express
WDT signal pin
reserved 17 18 reserved
reserved 19 20 reserved
reserved 21 22 reserved
reserved 23 24 THERMTRIP# connected to the COM Express
THERMTRIP# signal pin
reserved 25 26 GND
reserved 27 28 IRQ1# connected to the COM Express
IRQ1# signal pin
connected to the COM Express
IRQ2# signal pin IRQ2# 29 30 reserved
connected to the COM Express
IRQ_OUT# signal pin IRQ_OUT# 31 32 WAKE[1]# connected to the COM Express
WAKE1# signal pin
connected to the COM Express
IRQ5# signal pin IRQ5# 33 34 reserved
reserved 35 36 reserved
GND 37 38 GND
V_5V 39 40 V_12V+
Table 16: I2C/SM-Bus Connector J38 Pinout
SIGNAL PIN PIN SIGNAL
V_3V3 1 2 SMB_DAT
I2C_DAT 3 4 SMB_CK
I2C_CK 5 6 GND