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FIRMWARE
Host CPU to iSBC Controller Messages
B.3.2.1.1
INITIALIZE.
This message is used by the host CPU to
initialize the controllers.
This message must be the first message sent to the board after
reset unless a download and executE! function is to be performed,in
which case the Download command must be the first message. If the
Initialize message is not the first message after a reset, it is
ignored.
After the Initialize message is processed by the controller all
lines are disabled. Each line has to be independently enabled with
an Enable Line command before it can be used. The only line
specific commands that can be directed to a disabled line are
Configure Line and Enable Line.
The controllers return an Initialize Complete message containing a
bit map of the lines determined to be valid. This number will be 6
for the iSBC 546 board or 8 for the iSBC 547 and iSBC 548 boards.
Subsequent line specific commands must be directed to those lines
noted as valid. The message format is shown in Figure B-6.
Message Format
o
1
2
3
4
OlH
Reserved
Reserved
Reserve,d
Reserved
. .
NOTE
Reserved space
should be set to
00 (H) •
15
Reserve~
Response
An Initialization Complete command is
returned. No indication of MULTIMODULE
present is returned to the driver.
Figure B-6.
Initialize Message Format
B-12
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