Qualcomm GSP-1620 specifications Cpdsr

Integrating GSP-1620 Modems into OEM Products

Table 7-1. Interface Connector Pinouts (continued)

Pin	Signal Name	Signal	Direction	Description
Number		Level	User <-> Modem
15	CP_DSR	RS-232	DTE <- DCE	This pin is the DSR for the
				Control port and is
				asserted when the modem
				detects activity on the
				Control port and is ready
				to communicate with the
				DTE over this port. This
				signal is de-asserted when
				the modem detects no
				activity on the Control
				port; or is de-asserted as
				an acknowledgment to the
				user, indicating that the
				modem has completed its
				power- down sequence as
				no active DTR lines were
				seen on the serial ports.
16	CP_RXD	RS-232	DTE <- DCE	Control port RXD
17	MIC_P	Analog	Input to modem	Analog Microphone Input
				(Reserved for Future Use)
18	MIC_N	Analog	Input to modem	Analog Microphone Input
				(Reserved for Future Use)
19	Reserved	Reserved	Reserved
20	DP_DTR	RS-232	DTE -> DCE	Data port DTR
21	Ground	Ground	Ground return	Ground return
22	DP_RI	RS-232	DTE <- DCE	Data Port RI
23	SPKR_P	Analog	Output from	Analog speaker output
			modem	(Reserved for Future Use)

80-99208-1 Rev. D 7-11