Yamaha RX-Z1 Service Manual page 63

IC25: PCM1704U (DSP P.C.B.)
24 bit D/A Converter
DATA 1 20
BCLK 2 19
NC
3 18
-VDD
4 17
DGND 5 16
+VDD 6 15
WCLK
7 14
NC 8 13
20BIT 9 12
INVVERT
10 11
No. Name I/O
1 DATA I
2 BCLK I
3 NC –
4 -VDD –
5 DGND –
6 +VDD –
7 WCLK I
8 NC –
9 /20BIT I
10 /INVERT I
11 +VCC –
12 BPO DC –
13 NC –
14 IOUT O
15 AGND –
16 AGND –
17 SERVO DC –
18 NC –
19 REF DC –
20 -VCC –
-VCC
REF DC
NC
SERVO DC
AGND
AGND
IOUT
NC
BPO DC
+VCC
Serial Audio Data Input
Bit Clock Input for Serial Audio Data
No connect pin (Reserved)
Digital Power Supply, -5V
Digital ground
Digital Power Supply, +5V
Data Latch Enable
No connect pin (Reserved)
Input Data Length Select
Input Data Polarity Select
Analog Power Supply, +5V
Bipolar Offset Decoupling Capacitor
No connect pin (Reserved)
Analog Electric Current Output
Analog Ground
Analog Ground
Servo Amp Decoupling Capacitor
No connect pin (Reserved)
Band Gap Reference Decoupling Capacitor
Analog Power Supply, -5V
BCLK
2
WCLK
7
SERIAL INPUT I/F
DATA
1 &
CONTROL LOGIC
20BIT
9
INVERT 10
REFERENCE
&
SERVO
POWER SUPPLY
19 17 4 5 6 20
Function
RX-Z1/DSP-AZ1
23—BIT DAC A
23—BIT DAC B IOUT
14
BIPOLAR
3 NC
OFFSET
8 NC
13 NC
NC
18
16 11 12
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