IBM 990 - Manual (Page 98)

86 IBM
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zSeries 990 Technical Guide
Cryptographic Coprocessor Facility used by known applications have also been
implemented in the PCIXCC feature.
3.3.3 Physical Channel IDs (PCHIDs)
A Physical Channel ID (PCHID) is the number assigned to a port of an I/O or cryptographic
card. Each enabled port has its own PCHID number, which is based on its I/O slot location in
the I/O cage (except for ESCON sparing).
In the case of an ICB-4 link, its PCHID number is based on its CEC cage location.
Figure 3-8 shows the rear view of the first I/O cage (bottom of the A frame), including some
I/O cards in slots 01 to 05, and the PCHID numbers of each port.
Figure 3-8 Physical Channel IDs (PCHIDs)
Figure 3-9 on page 87 contains the corresponding PCHID Report of the configuration
example shown in Figure 3-8.
OSA-E FICON
...
I/O Cage 1 - Front
01 02 03 04 05 ... I/O Slots
I/O Cards STI-M
PCHIDs
I/O Ports
130
131
STI-M
ISC-3 ISC-3
110
111
120
121
100
101