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3. HW Circuit Description
3.10.2 Downlink Path
The voice downlink path receives speech samples at the rate of 8 kHz/16kHz from the DSP via the
voice serial interface VSP and converts them to analog signals to drive the external transducers.
Earphone : The earphone amplifier provides a full differential signal on the terminals (EAR_P,
EAR_N)
Headset : Each output amplifier provides a single signal on Headset Left.(HSOL)
Handfree : The 8 Ohms speaker amplifier provides a differential signal on the terminals SPKPA, and
SPKNA then goes to external AMP for SPEAKER(SPKPA, SPKNA)
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 3-10-2 Downlink Interface of ABB
R113
0
K1
SPKPD_1
SPKPD_2
K2
L1
SPKVDD_1
SPKVDD_2
L2
T1
TCK
U1
TDI
TDO
U2
K12
TMS
R1
SPKGND_1
H1
N1
SPKGND_2
M6
SPKNA_1
SPKNA_2
M7
M1
SPKND_1
SPKND_2
M2
K6
SPKPA_1
SPKPA_2
L6
G6
MICBIAS
F2
MICIN
MICIP
G2
HSMIC
D2
HSMICBIAS
H6
G1
HSOL
F1
HSOR
HSOVMID
J6
E1
AUDVMID
AUXI_FMR
C1
EARN
H2
EARP
J2
P2
FILTERAPLL
C2
FML
100nH
L101
C114
47p
VBAT
L102
100nH
0
R112
47p
C116
L100
100nH
MICBIAS
15K
R118
4.7u
C120
47p
C115
C121
0.1u
TP102
4.7n
C118
C119
4.7u
47n
C117
4.7u
C122
EAR_N
EAR_P
HSOL
SPKPA
RADIO_L
RADIO_R
HSMIC
MICIP
MICIN
SPKNA
Содержание CP150
Страница 1: ...Service Manual Model CP150 Service Manual CP150 Date August 2008 Issue 1 0 Internal Use Only ...
Страница 117: ...Note ...
Страница 118: ...Note ...