Sony Ericsson GM47 Output at Afms for 3dBm0 at Pcmin, Output at BEARN/BEARP for 3dBm0 at Pcmin

2. SYSTEM CONNECTOR INTERFACE

Parameter		Limit
High frequency cut-off (–3dB)		> 3500Hz ± 50Hz
Output d.c. bias level	Hands-free mode	0V
	Portable hands-free mode	2.0V ± 0.1V
Additional Gain in Portable hands-free mode		28.5dB

a.The a.c.-coupling capacitance must be supplied by your application, unless a d.c.-coupled microphone is used.

The following tables show the nominal PGA (programming gain settings). For more information see the relevant AT commands.

Maximum input voltage limit: 245mVrms

Input	Input (mVrms)	TXAGC (dB)	AUX AMP	PCMOUT (dBm0)
			gain
ATMS	245	0	13	3

Maximum input level at MICI, 61.4mVrms output at

PCMOUT = 3dBm0

Input	Differential	TXAGC (dB)	AUX AMP	PCMOUT (dBm0)
	input (mVrms)		gain
MICN	61.4	0	25	3
MICP

Output at AFMS for 3dBm0 at PCMIN

Input	dBm0	RXPGA	Volume	AFMS (mVrms)
			control (dB)
PCMIN	3	0	0	436

Output at BEARN/BEARP for 3dBm0 at PCMIN

Input	dBm0	RXPGA	Volume	BEAR (mVrms)
			control (dB)
PCMIN	3	0	0	388

2.6.2 Audio From Mobile Station - AFMS

AFMS is the analogue audio output from the module and may be used to drive a speaker or the ear-piece in a portable hands-free accessory.

PCM digital audio signals, entering the module through the PCMIN pin, are translated to analogue signals by the CODEC. See “2.7 PCM Digital Audio”, page 52 for further information.

49

LZT 123 7263 R1C