PMAC-PCI Hardware Reference
58
Software Setup
If the saved value of I46 is 0, so the CPU’s operational frequency is determined by jumper
settings, then the serial baud rate is determined by a combination of the setting of jumpers E44-
E47 and the CPU frequency on a PMAC(1) board, as shown in the following table. These
settings maintain backward compatibility.
E44
E45
E46
E47
Baud Rate
for 20MHz
Baud Rate
for 40MHz
Baud Rate
for 60MHz
ON
ON
ON
ON
Disabled
Disabled
Disabled
OFF
ON
ON
ON
300
600
900
ON
OFF
ON
ON
400*
800*
1200
OFF
OFF
ON
ON
600
1200
1800
ON
ON
OFF
ON
800*
1600*
2400
OFF
ON
OFF
ON
1200
2400
3600
ON
OFF
OFF
ON
1600*
3200*
4800
OFF
OFF
OFF
ON
2400
4800
7200
ON
ON
ON
OFF
3200*
6400*
9600
OFF
ON
ON
OFF
4800
9600
14400
ON
OFF
ON
OFF
6400*
12800*
19200
OFF
OFF
ON
OFF
9600
19200
28800
ON
ON
OFF
OFF
12800*
25600*
38400
OFF
ON
OFF
OFF
19200
38400
57600
ON
OFF
OFF
OFF
25600*
51200*
76800
OFF
OFF
OFF
OFF
38400
76800
115200
* Not an exact baud rate
Summary of Contents for PMAC PCI
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Page 50: ...PMAC PCI Hardware Reference 40 Mating Connectors Machine Connections Example...
Page 72: ...PMAC PCI Hardware Reference 62 Schematics SCHEMATICS...
Page 73: ...PMAC PCI Hardware Reference Schematics 63...
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