
Si2400
Rev. 1.3 57
Reset settings = 1000_0000
b
(0x80)
S33 (MDMO). Modem Override
BitD7D6D5D4D3D2D1D0
Name
DON DOF NAT TSAC
Type R/W R/W R/W R/W
Bit Name Function
7 Reserved Read returns one.
6DON
On-Hook Intrusion Detect.
0=Enable.
1=Disable*.
5DOF
Off-Hook Intrusion Detect.
0=Enable.
1=Disable.
4:2 Reserved Read returns zero.
1NAT
No Answer Tone.
0 = Disable.
1 = Enable no answer tone fast handshake.
0TSAC
Transmit Scrambler Active.
0 = Disable.
1 = Force transmit scrambler active once connected.
*Note: When the Si2400 is on hook, the on-hook intrusion detector might not be immediately disabled by only setting the
S33[6] (DON) = 1
b
(S33 = 0xCX, X indicates an otherwise appropriate value.) In order to guarantee that the result
codes and the updating of S14[2] (NLD) and S14[1] (IND) are immediately disabled, ATS33=CX must be followed by
ATSD1=00S14=X0.
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