Rabbit 6000 User’s Manual
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196
Serial Port x Control Register
(SACR)
(Address = 0x00C4)
(SBCR)
(Address = 0x00D4)
(SCCR)
(Address = 0x00E4)
(SDCR)
(Address = 0x00F4)
Bit(s)
Value
Description
7:6
00
No operation. These bits are ignored in the asynchronous mode.
01
In the clocked serial mode, start a byte-receive operation.
10
In the clocked serial mode, start a byte-transmit operation.
11
In the clocked serial mode, start a byte-transmit operation and a byte-
receive operation simultaneously.
5:4
00
Parallel Port C is used for input.
01
Parallel Port D is used for input.
10
Parallel Port E is used for input.
11
Disable the receiver input.
3:2
00
Asynchronous mode with 8 bits per character.
01
Asynchronous mode with 7 bits per character. In this mode the most
significant bit of a byte is ignored for transmit, and is always zero in
receive data.
10
Clocked serial mode with external clock.
11
Clocked serial mode with internal clock.
1:0
00
The serial port interrupt is disabled.
01
The serial port uses Interrupt Priority 1.
10
The serial port uses Interrupt Priority 2.
11
The serial port uses Interrupt Priority 3.
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Страница 234: ...Rabbit 6000 User s Manual digi com 234 Figure 22 3 Sample Slow A D Converter Circuit...
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Страница 420: ...Rabbit 6000 User s Manual digi com 420 Figure 37 1 Memory Read and Write Cycles...