PMAC-Lite Hardware Reference
16
E-Point
Descriptions
E44 - E47: Serial Baud Rate Control
Jumpers E44 - E47 control what baud rate to use for serial communications. Any character received over
the bus causes PMAC to use the bus for its standard communications. The serial port is disabled when
E44-E47 are all on.
Baud Rate Control
“E” Points
Baud Rate
Default &
Physical Layout
E44 E45 E46 E47
20 MHz
Flash CPU
(OPT 4A)
Battery
CPU, 40
MHz Flash
CPU (Opt
5A)
60 MHz
Flash CPU
(Opt 5B)
80 MHz
Flash
CPU
(Opt 5C)
E44 E45 E46 E47
C2 C2 C2 C2
ON ON ON ON Disabled Disabled Disabled Disabled
OFF ON ON ON
300
600
900
1200
ON OFF ON ON
400*
800*
1200
1600*
OFF OFF ON ON
600
1200
1800
2400
ON ON OFF ON
800*
1600*
2400
3200*
OFF ON OFF ON
1200
2400
3600
4800
ON OFF OFF ON
1600*
3200*
4800
6400*
OFF OFF OFF ON
2400
4800
7200
9600
Opt
5C
ON ON ON OFF 3200*
6400*
9600 12800*
Opt
5B
OFF ON ON OFF 4800
9600
14400 19200 Standard,
Opt
5A
ON OFF ON OFF 6400* 12800* 19200 25600*
OFF OFF ON OFF
9600
19200
28800
38400
Opt
4A
(1.5-Lite)
ON ON OFF OFF 12800* 25600* 38400 51200*
OFF ON OFF OFF
19200
38400
57600
76800
ON OFF OFF OFF 25600*
51200*
76800 102400*
OFF OFF OFF OFF
38400
76800
115200 153600
*
Non-standard baud rate
Note:
These jumpers are only read at power-up/reset to set the baud rate at that time.
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