Preparing for the Installation
1–5
1.4.2 I/O Module
The I/O module is a required second tier module that handles all I/O activity for
the Alpha VME 5/352 and 5/480 SBCs. This module plugs into the I/O module
connector on the CPU module.
Note
The I/O module is attached to the CPU module when you receive it. Dis-
assemble the CPU and I/O assembly only if you need to replace the
SROM.
Figure 1–2 shows the layout and primary components.
Figure 1–2 I/O Module Layout
The numeric callouts in the figure identify the following key components:
1
P1 VMEbus connector
2
Connector to CPU module (on the back of the I/O module)
3
Debug jumper (for use with Serial ROM Mini-Console only)
4
P2 VMEbus connector
5
Configuration switchpack
6
Caterpillar insulation strip
7
PMC I/O companion card connector
8
Nonvolatile RAM/time-of-year (TOY) clock
9
Auxiliary serial port
ML013782
9
10
11
12
7
8
5
1
4
2
3
6