Intel MD566X - Manual (Page 107)

56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide Intel Confidential 107
S30 0
Disconnect Inactivity Timer: This S-register sets the length of time (in minutes)
that the modem stays online/off-hook before disconnecting when no data is being
transmitted or received. In data and fax modes, any data transmitted or received be-
tween the DTE-DCE interface resets the timer. In all other modes (except Tele-
phone-Emulation mode), any data transmitted resets the timer. In Telephone-Emu-
lation mode, S30 is ignored (that is, the modem does not automatically hang up the
line after a given time delay).
Range: n = 0–255 minutes
n = 0 Disabled
S31 49
Bit-Mapped Options : S31 is a read-only register that indicates AT command set-
tings.
Bit 0 0 N0 is selected
1* N1 is selected
Bit 1 0* &U0 is selected
1 &U1 is selected
Bit 2 Reserved
Bit 3 0* -C0 is selected
1 -C1 is selected
Bit 4 0 %E0 is selected
1* %E1 is selected
Bit 5 0 %G0 is selected
1* %G1 is selected
Bit 6, 7 Reserved
Table 7-1. S-Register Command Descriptions (Continued)