General Purpose Spi - ADLINK Technology arm AMPERE COM-HPC-ALT User Manual

COM-HPC-ALT User's Guide
with a MMC (Module Management Controller). The Module IPMB is a slave port. See Section Error! Bookmark not defined. below for more details on
platform management topics.
Name Pin #
IPMB_CLK B91
IPMB_DAT B92
Note: Weak pull-up values are shown for the IPMB CLK and DAT lines in Table above. These are merely to prevent the lines from floating if no
Carrier BMC is present. Stiffer pull-ups should be implemented on the Carrier with values appropriate to the situation at hand if the Carrier
implements a BMC and an IPMB master.

4.3.9 General Purpose SPI

Name Pin #
GP_SPI_MISO B94
GP_SPI_MOSI B93
GP_SPI_CLK B99
GP_SPI_CS0# B95
GP_SPI_CS1# B96
GP_SPI_CS2# B97
GP_SPI_CS3# B98
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Description
Clock I/O line for the multi-master IPMB port
Data I/O line for the multi-master IPMB port
Description
Serial data into the COM-HPC Module from the
Carrier GP_SPI device ("Master In Slave Out")
Serial data from the COM-HPC Module to the Carrier
GP_SPI device ("Master Out Slave In")
Clock from the Module to Carrier GP_SPI device
GP_SPI chip selects, active low
Copyright © 2023 ADLINK Technology, Inc.
I/O PU / PD Comment
I/O OD PU 47K
3.3VSB 3.3VSB
I/O OD PU 47K
3.3VSB 3.3VSB
I/O PU / PD Comment
I 3.3V PU 10K
O 3.3V
O 3.3V
O 3.3V
PICMG COM-HPC R1.0