Hitachi HTD-K185UK Service Manual page 9

Dvd av receiver and digital terrestrial tv receiver
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138
RD23
139
RD22
140
DVDD2
141
RD21
142
RD20
143
RD19
144
RD18
145
DVSS
146
RD17
147
RD16
148
ABCK
149
ALRCK
150
DVDD3
151
ACLK
152
MC DATA
153
SPDIF
154
ASDATAO
155
ASDATA1
156
ASDATA2
157
ASDATA3
158
ASDATA4
159
DACVDDC
160
VREF
161
FS
Inout 2-16MA,
DRAM data 23 / Videoin
SR PU/PD,
Data PortA 7
SMT
Inout 2-16MA,
DRAM data 22 / Videoin
SR PU/PD,
Data PortA 6
SMT
Power
2.5V power pin for internal digital circuitry
Inout 2-16MA,
DRAM data 21 / Videoin
SR PU/PD,
Data PortA 5
SMT
Inout 2-16MA,
DRAM data 20 / Videoin
SR PU/PD,
Data PortA 4
SMT
Inout 2-16MA,
DRAM data 19 /
Videoin Data PortA 3
SR PU/PD,
SMT
Inout 2-16MA,
DRAM data 18 /
Videoin Data PortA 2
SR PU/PD,
SMT
Ground
Ground pin for internal digital circuitry
Inout 2-16MA,
DRAM data 17 /
SR PU/PD,
Videoin Data PortA 1
SMT
Inout 2-16MA,
DRAM data 16 /
Videoin Data PortA 0
SR PU/PD,
SMT
Audio bit clock
Output
4MA
Inout 4MA,
(1 ) Audio left/right channel clock
PD, SMT
(2) Trap value in power-on reset :
1 : use external 373
Power
3.3V power pin for internal digital circuitry
Audio DAC master clock (384/256 audio sample frequency)
Inout
4MA
Input
Microphone serial input
SPDIF output
Output 2-16MA,
SR : ON/OFF
Inout 4MA
(1 ) Audio serial data 0 (left/right channel)
PDSMT
(2)
Trap value in power-on reset :
1 : manufactory test mode
(1)
Audio serial data 1 (surround left/surround right channel)
Inout 4MA
(2)
Trap value in power-on reset :
PD SMT
1 : manufactory test mode
Inout 4MA
(1 ) Audio serial data 2 (center/left channel)
PD SMT
(2)
Trap value in power-on reset :
1 : manufactory test mode
(1 )
Audio serial data 3 (surround left/surround right channel)
Inout 4MA
(2)
Trap value in power-on reset :
PD SMT
1 : manufactory test mode
Inout 4MA
(1 )
Audio serial data 4 (center/left channel)
(2) Trap value in power-on reset :
PD SMT
1 : manufactory test mode 0 : normal operation OR Videoin Data PortB 2
Power
3.3V power pin for VIDEO DAC circuitry
Analog input
Bandgap reference voltage
Analog output
Full scale adjustment
0: use internal 373
0 : normal operation
0 : normal operation
0 : normal operation
0 : normal operation OR Videoin Data PortB 1

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