Espi Debug Connector; Com Ports #0 #1 Internal Pin Headers - Seco CCHPC-C78-C User Manual

eSPI Debug Connector

eSPI Connector
Pin Signal
1 eSPI_CLK
3 eSPI_ALERT1#
5 eSPI_IO_0
7 eSPI_IO_1
9 eSPI_IO_2
11 eSPI_IO_3
13 eSPI_CS0#
JP27 position eSPI_ALERT#0 connected to
1-2 BMC Connector CN58
2-3 eSPI connector CN15
JP29 position eSPI_ALERT#1 connected to
1-2 eSPI Dual UART Controller
2-3 eSPI connector CN15

COM ports #0 #1 internal pin Headers

COM HPC modules foresee a maximum of 2 Serial Ports with only Tx, Rx, RTS# and CTS# signals (UART #0 and UART #1).
COM #0 #1 ports internal pin Header
Pin RS-232 mode
1 COM0_RxD
2 COM1_RxD
3 COM0_TxD
4 COM1_TxD
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
CN15
Pin Signal
2 eSPI_RESET#
4 +1.8V_ALW
6 eSPI_ALERT0#
8 eSPI_CS1#
12 GND
14 GND
CN26
RS-422 mode RS-485 mode
COM0_Rx+
COM1_Rx+
COM0_Tx- COM0_Rx-/COM0_Tx-
COM1_Tx- COM1_Rx-/COM1_Tx-
The COM HPC® card edge connector share on the same pins both the LPC and the
eSPI interface.
The signals of these pins are first of all carried directly to an internal
dual row 6+7 pin header, type NELTRON p/n 2208SM-14G-E10-CR
or equivalent, with the pinout shown in the table on the left.
The ALERTx# and CSx# signals, however, are shared with the BMC connector CN58
(see par. 25) and with the eSPI Dual UART controller necessary to implement COM #2
and COM #3 ports (see par. 11).
For this reason, four dedicated 3-way jumpers allow the redirection of the
above mentioned signals, according to the tables below.
JP28 position eSPI_CS#0 connected to
1-2 BMC connector CN58
2-3 eSPI connector CN15
JP30 position eSPI_CS#1 connected to
1-2 eSPI Dual UART Controller
2-3 eSPI connector CN15
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