Sony Ericsson GM47 ADC3, Sda, Scl, Buzzer, OUT5, Led, Vio, Txon, Dtr, Dcd, Rts, Cts, TD3, RD3

2. SYSTEM CONNECTOR INTERFACE

Pin	Signal Name	Dir	Signal Type	Description
28	ADC3	I	Analogue	Analogue to digital converter 3
29	SDA	I/O	2.75, internal	I2C data
			pull up
30	SCL	O	2.75, internal	I2C clock
			pull up
31	BUZZER	O	Digital 2.75	Buzzer output from module
32	OUT5	O	Digital 2.75	Programmable output 5
33	LED	O	Digital 2.75	Flashing LED
34	VIO	O	Power Out	Module power indication. VIO is a
			2.75V	2.75V at 75mA output supply that can
				be used to power external circuitry that
				interfaces to the GM47
35	TX_ON	O	Digital 2.75	This output indicates when the GSM
				module is going to transmit the burst
36	RI	O	Digital 2.75	Ring Indicator (UART1)
37	DTR	I	Digital 2.75	Data Terminal Ready (UART1)
38	DCD	O	Digital 2.75	Data Carrier Detect (UART1)
39	RTS	I	Digital 2.75	Request To Send (UART1)
40	CTS	O	Digital 2.75	Clear To Send (UART1)
41	TD	I	Digital 2.75	Transmitted Data (UART1).
				Data from DTE (host) to DCE (module).
				Former DTMS
42	RD	O	Digital 2.75	Received Data (UART1).
				Data from DCE (module) to DTE (host).
				Formerly DFMS
43	TD3	I	Digital 2.75	UART3 transmission
44	RD3	O	Digital 2.75	UART3 reception
45	TD2	I	Digital 2.75	UART2 transmission. Used for flashing
				the memory. Former CTMS
46	RD2	O	Digital 2.75	UART2 Reception. Used for flashing the
				memory. Former CFMS
47	PCMULD	I	Digital 2.75	DSP PCM digital audio input
48	PCMDLD	O	Digital 2.75	DSP PCM digital audio output
49	PCMOUT	O	Digital 2.75	Codec PCM digital audio output
50	PCMIN	I	Digital 2.75	Codec PCM digital audio input
51	PCMSYNC	O	Digital 2.75	DSP PCM frame sync
52	PCMCLK	O	Digital 2.75	DSP PCM clock output
53	MICP	I	Analogue	Microphone Input positive
54	MICN	I	Analogue	Microphone Input negative
55	BEARP	O	Analogue	Speaker output positive

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LZT 123 7263 R1C