Real Time Devices GSM35 Especificações descarregar pdf (Página 55)

TC35 / TC37 Hardware Interface Description

TC35_37_HD_02_V03.10 - Released Page 55 of 92 21.12.2001

Function Signal

Name

No.

I/O Signal Level Comment

EPP2 33 O

EPN2 34 O

= 15", (30k" if not active)

omax

= 3.7V

, no load,

@ 3.14 dBm0:

f = 1024Hz,

audio mode = 6,

outBbcGain = 0,

outCalibrate = 16384

If unused keep pin

open

Differential output,

e.g. for external loud-

speaker amplifier for

handsfree operation

EPP1 35 O

EPN1 36 O

= 15", (30k" if not active)

omax

= 3.7V

, no load,

@ 3.14 dBm0:

f = 1024Hz,

audio mode = 5,

outBbcGain = 0,

outCalibrate = 16384

If unused keep pin

open

Differential output,

e.g. for internal ear-

piece

MICP1 37 I

MICN1 38 I

= 2k"

imax

= 1.03V

supply

= 2.65V ( 0V if off ), R

= 4k"

Keep unused inter-

face open

Balanced input with

switchable micro-

phone supply source,

e.g. for internal micro-

phone

MICP2 39 I

Audio

Interface

MICN2 40 I

= 2k"

imax

= 1.03V

supply

= 2.65V ( 0V if off ), R

= 4k"

Keep unused inter-

face open

Balanced input with

switchable micro-

phone supply source,

e.g. for external

microphone for

handsfree operation

Explanation of signal names:

P = positive

N = negative

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