Intel MD566X manual S33, S37

56K V.92 Data, Fax, and Voice Chipset

Table 7-1. S-Register Command Descriptions (Continued)

		Sleep Mode Timer: S33 determines when the modem enters sleep or power-down
		mode. When enabled (S33 ≠ 0), the controller enters sleep mode whenever the mo-
		dem has been inactive for a user-programmable time delay (S33). The modem is
		considered to be in an inactive state when:
		1) No internal processing is being performed;
		2) No activity occurs between the host and the modem within a
S33	10	specified time period;
		3) The modem is off-line.
		The modem exits sleep mode whenever the host reads or writes to the
		modem or when a ring signal is detected.
		Sleep mode is disabled by setting S33 to “0”.
		Range: 0–90 seconds
		Maximum Line Speed Attempted: This S-register selects the maximum line speed
		allowable (that is, the modem attempts to connect at this speed or falls back to a low-
		er speed). Settings for Bn, +MS=m, Nn, and S37 determine the allowable modem
S37	0	connections. S37 provides the same information as the +MS=m <max rate> param-
		eter. Changing the +MS=m <max rate> parameter automatically changes the value
		of S37. For example, setting +MS=m <max rate> to 0 sets S37 to 0. Note that S37
		has no effect during V.32 bis retraining/rate negotiation.

108 Intel Confidential Programmer’s Guide