Jameco Electronics Rabbit 3000 - Manual (Page 185)

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.
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.
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.