6947ch03.fm Draft Document for Review April 7, 2004 6:15 pm
86 IBM eServer 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 on page 86 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 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