Specifications

TC35 / TC37 Hardware Interface Description
TC35_37_HD_02_V03.10 - Released Page 55 of 92 21.12.2001
Function Signal
Name
Pin
No.
I/O Signal Level Comment
EPP2 33 O
EPN2 34 O
R
i
= 15", (30k" if not active)
V
omax
= 3.7V
pp
, 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
R
i
= 15", (30k" if not active)
V
omax
= 3.7V
pp
, 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
Z
i
= 2k"
V
imax
= 1.03V
pp
V
supply
= 2.65V ( 0V if off ), R
DC
= 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
Z
i
= 2k"
V
imax
= 1.03V
pp
V
supply
= 2.65V ( 0V if off ), R
DC
= 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