Nokia 616 - Description of the Audio Block; Block Diagram of Audio Block

TFE-4/RV-1 Company Confidential
TF5 Technical Information Nokia Customer Care
Page 8a-22 Copyright © 2005 Nokia Corporation. Issue 2.0 Mar/2005
Company Confidential
Figure 16: IGNS Levelshifter realization
BSI-Switch
The BSI-Resistor may only be connected to
Ground when VCAR is in the correct range
(Powerok = active). This is the task of the
BSI-switch.
Figure 17: BSI switch
Description of the Audio Block
Block Diagram of the Audio Block
Figure 18: Block Diagram of Audio-Block
B2BIGN
S
VBIAS
HFMute
Levelshifter
HDMute
Levelshifter
HFMIC
HFSPKR
HDMIC
HDSPK
R
HFAUDIO
HDAUDIO
B2BHFMIC_p
B2BHFMIC_n
B2BHDMIC_p
B2BHDMIC_n
B2BXEAR_p
B2BXEAR_n
B2BHFMUTE
B2BHDMUTE
F
I
L
T
E
R
B2BHDMIC_p
B2BHDMIC_n
HFMIC
HFSPKR
HDEAR
VMIC VAUIDIO10V
VBIAS
VEBpwr