Connectors Description; Com Express Module Connectors - Seco COM-Express CCOMe-C96 User Manual

3.3 Connectors description

COM Express module connectors

For the connection of COM Express CPU modules, on board there are two connectors, type TYCO 3-6318491-6
(220 pin dual row plug, ultra thin, 0.5mm pitch, h=8mm), as requested by COM Express specifications.
The pinout of these connectors will be briefly described in the following paragraphs. Please refer to COM Express
standard for a better description of each signal.
Description
Power Ground
GbEthernet Differential pair 3-
GbEthernet Differential pair 3+
GbEthernet 100Mb/s link ind.
GbEthernet 1000Mb/s link ind.
GbEthernet differential pair 2-
GbEthernet Differential pair 2+
Not connected
GbEthernet Differential pair 1-
GbEthernet Differential pair 1+
Power Ground
GbEthernet Differential pair 0-
GbEthernet Differential pair 0+
GbEthernet Reference Voltage
Suspend to RAM (S3) signal
CCOMe-C96
CCOMe-C96 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by C.M. Copyright © 2021 SECO S.p.A.
COM Express Connector CN1 - Rows A & B
Pin name Pin nr.
GND A1
GBE0_MDI3- A2
GBE0_MDI3+ A3
GBE0_LINK100# A4
GBE0_LINK1000# A5
GBE0_MDI2- A6
GBE0_MDI2+ A7
N.C. A8
GBE0_MDI1- A9
GBE0_MDI1+ A10
GND A11
GBE0_MDI0- A12
GBE0_MDI0+ A13
GBE0_CTREF A14
SUS_S3# A15
Pin nr. Pin name
B1 GND
B2 GBE0_ACT#
B3 LPC_FRAME# / ESPI_CS0#
B4 LPC_AD0 / ESPI_IO_0
B5 LPC_AD1 / ESPI_IO_1
B6 LPC_AD2 / ESPI_IO_2
B7 LPC_AD3 / ESPI_IO_3
B8 LPC_DRQ0# / ESPI_ALERT0#
B9 N.C.
B10 LPC_CLK / ESPI_CK
B11 GND
B12 PWRBTN#
B13 SMB_CK
B14 SMB_DAT
B15 SMB_ALERT#
Description
Power Ground
GbEth Activity indicator
LPC Frame Indicator / eSPI Chip Select
LPC Address / Data Bus 0
eSPI Master Data Input / Output 0
LPC Address / Data Bus 1
eSPI Master Data Input / Output 1
LPC Address / Data Bus 2
eSPI Master Data Input / Output 2
LPC Address / Data Bus 3
eSPI Master Data Input / Output 3
LPC serial DMA request
eSPI Alert request service signal
Not connected
LPC Clock Output 33MHz
eSPI Master Clock Output
Power Ground
Power Button
SM Bus Clock
SM Bus Data
SM Bus Alert signal
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