Harman Kardon AVR 171/230, Service Manual

Page: 160 / 174

AVR171 Block Diagram AVR171 Block Diagram
To HDMI / BCO/ BT
UART & GPIO SPDIF & Analog Audio I2S I/F SPI & GPIO By Upgrade
o
l
t
a
tio
n
4
Lin
e
I
2S
1
Lin
e
I
2S
DAI 1
SPI
Flash
Me
mory
BCO
C
o
ntr
o
HD
M
I
P
ar
t
C
omm
u
ni
c
a
a
log
o
DA0 2
u
di
o
CS49834
DSP
CS49834
DSP
SPI
GPIO
DAO
1
16M
SD
4 Line I2S
BCO
A
n
a
Aud
io
USB
T
A
nal
og
A
u
DAI 2
SPI
D
RAM
DSP Controls
B
T
Main MCU
STM32F205ZFT6
Main MCU
STM32F205ZFT6
GPIO
T i t
IR In X 1
4
L
in
e
I
2
S
Trigger out
I2S Out
GPIO
4
Optical In
X 2
CS42528
C d
CS42528
C d
SPI
SPDIF
GPIO
VF
Co
n SM
P Co
n Vo
lu Co
n Tu
n Co
n ET
C
Coaxial
In x 1
Codec Codec
SD
IN
8CH Analog
Input
SMPS SMPS
D
n
trol
P
S
n
trol
u
me
n
trol
n
er
n
trol
C
SMPS SMPS
2 16 2 16
Main MCU
SW Pre out 2 SW Pre out 2
8CH Analog
SW Pre out 1 SW Pre out 1
2x16
Dot
Matrix
2x16
Dot
Matrix
Main MCU
Main MCU
SW Pre out 2 SW Pre out 2
NJU72340
Volume
Source
NJU72340
Volume
Source
Analog In x 2
SW Pre out 1 SW Pre out 1
AB_Class AMP 7ch/ AB_Class AMP 7ch/
Analog
Input
Analo
g
Source
Selector
Source
Selector
BD3812G
l
BD3812G
l
H/P & MIC H/P & MIC
Zone2 Pre out x 1 Zone2 Pre out x 1
Main MCU
Tuner Module
( / )
Tuner Module
( / )
&
Mux
g
Output
Zone2 Volume Zone2 Volume
Zone2 Pre out x 1 Zone2 Pre out x 1
Main MCU
Main MCU
(FM/AM) (FM/AM)
Harman Kardon AVR 171 Service Manual
Page 160 of 174