Jameco Electronics 3000 ユーザーズマニュアル
176
Rabbit 3000 Microprocessor
Table 12-17. Extended Register Asynchronous Mode All Ports
Serial Port x Extended Register
(SAER)
(Address = 0xC5)
(SBER)
(Address = 0xD5)
(SCER)
(Address = 0xE5)
(SDER)
(Address = 0xF5)
(SEER)
(Address = 0xCD)
(SFER)
(Address = 0xDD)
Bit(s)
Value
Description (Async mode only)
7:5
xxx
These bits are ignored in async mode.
4
0
Normal async data encoding.
1
Enable RZI coding (3/16ths bit cell IrDA-compliant).
3
0
Normal Break operation. This option should be selected when address bits are
expected.
expected.
1
Fast Break termination. At the end of Break a dummy character is written to the
buffer, and the receiver can start character assembly after one bit time.
buffer, and the receiver can start character assembly after one bit time.
2
0
Async clock is 16X data rate.
1
Async clock is 8X data rate.
1:0
xx
These bits are ignored in async mode.