V.22 bis Modem with AT Commands
CMX866
S-Register
Description
Reg Range Units
Default
0-255
Hex
B0
S25
Tx Gain, Tx data format on phone line:
Bit 2-0 - Tx Gain, 000 (-10.5dB) through to 111 (0dB)
in 1.5dB steps
Bit 5-3 - Tx Data/Stop bits:
000 (5 data, 1 stop),
001 (5 data, 2 stop),
010 (6 data, 1 stop),
011 (6 data, 2 stop),
100 (7 data, 1 stop),
101 (7 data, 2 stop),
110 (8 data, 1 stop) - default,
111 (8 data, 2 stop)
Bit 7-6 - Tx Data Format:
00 (start/stop mode - odd parity),
01 (start/stop mode - even parity),
10 (start/stop mode - no parity) - default,
11 (Synchronous mode)
0-255
Hex
30
S26
Rx Gain, Rx data format, Rx overspeed on phone
line:
Bit 2-0 - Rx Gain, 000 (-10.5dB) through to 111 (0dB)
in 1.5dB steps
Bit 5-3 - Rx Data/Parity bits:
000 (5 data, no parity),
001 (5 data, parity),
010 (6 data, no parity),
011 (6 data, parity),
100 (7 data, no parity),
101 (7 data, parity),
110 (8 data, no parity) - default,
111 (8 data, parity)
Bit 7-6 - Rx USART overspeed mode:
00 (start/stop mode 2.3% overspeed) - default,
01 (start/stop mode 1.0% overspeed),
10 (start/stop mode no overspeed),
11 (Synchronous mode)
ã 2004 CML Microsystems Plc
28
D/866/4
CMLMICRO [ CML MICROCIRCUITS ]
