Rabbit 6000 User Manual page 151

Parallel Port G Control Register
Bit(s) Value
7:6
5:4 00
01
10
11
3:2
1:0 00
01
10
11
Parallel Port G Function Register
Bit(s) Value
7:0 0
1
Parallel Port G Drive Control Register
Bit(s) Value
7:0 0
1
Parallel Port G Data Direction Register
Bit(s) Value
7:0 0
1
Rabbit 6000 User's Manual
These bits are ignored and should be written with zero.
The upper nibble peripheral clock is perclk/2.
The upper nibble peripheral clock is the output of Timer A1.
The upper nibble peripheral clock is the output of Timer B1.
The upper nibble peripheral clock is the output of Timer B2.
These bits are ignored and should be written with zero.
The lower nibble peripheral clock is perclk/2.
The lower nibble peripheral clock is the output of Timer A1.
The lower nibble peripheral clock is the output of Timer B1.
The lower nibble peripheral clock is the output of Timer B2.
The corresponding port bit functions normally.
The corresponding port bit carries its alternate signal as an output. See
Table 14-1.
The corresponding port bit, as an output, is driven high and low.
The corresponding port bit, as an output, is open-drain.
The corresponding port bit is an input.
The corresponding port bit is an output.
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(PGCR) (Address = 0x004C)
Description
(PGFR) (Address = 0x004D)
Description
(PGDCR) (Address = 0x004E)
Description
(PGDDR) (Address = 0x004F)
Description
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