Silicon Laboratories ISOMODEM Si2401, Руководство пользователя

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Si2401
Preliminary Rev. 0.9 43
Reset settings = 0000_0000 (0x00)
S0C (MF2). Modem Functions 2
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name CDE CIDM[1:0] 9BF BDL MLB
Type R/W R/W R/W R/W R/W
Bit Name Function
7
CDE
Carrier Detect Enable.
0
= Disable.
1 = Enable GPI02 as an active low carrier detect pin (must also set SE2[3:2]
[GPIO2] = 01).
6:5 CIDM[1:0] Caller ID Monitor.
00
= Caller ID monitor disabled.
01 = Caller ID monitor enabled. Si2401 must detect channel seizure signal followed by
marks in order to report caller ID data. (Normal Bellcore caller ID)
10 = Reserved.
11 = Caller ID monitor enabled. Si2401 must only detect marks in order to report caller ID
data.
4 Reserved Read returns zero.
3 9BF Ninth Bit Function.
Only valid if the ninth bit escape is set S15[0] (NBE).
0 = Ninth bit equivalent to ALERT.
1 = Ninth bit equivalent to HDLC EOFR.
2 BDL Blind Dialing.
0
= Blind dialing disabled.
1 = Enables blind dialing after dial timeout register S02 (CW) expires.
1 MLB Modem Loopback.
0
= Not swapped.
1 = Swaps frequency bands in modem algorithm to do a loopback in a test mode.
0 Reserved Read returns zero.