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IC BLOCK DIAGRAM & DESCRIPTION
IC871 PCM1748E(D/A Converter)
BCK
1
LRCK
3
DATA
2
ML 15
MC 14
MD 13
SCK 16
PIN ASSIGNMENTS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IC859 NC7SZ157P6(Multiplexer)
Connection Diagram
I
1
1
GND
2
I
3
0
(Top View)
Pin Descriptions
Pin Name
I
, I
0
1
S
Z
Audio
Serial
Port
Oversampling
Digital Filter
with
Function
Controller
Serial
Countrol
Port
System Clock
Zero Detect
Manager
12
NAME
TYPE
DESCRIPTIONS
BCK
IN
Audio data bit clock input.
DATA
IN
Audio data digital input.
LRCK
IN
L-channel and R-channel Audio data latch enable input.
DGND
-
Digital ground.
V
-
Digital power supply, +3.3V.
DD
V
-
Analog power supply, +5V.
CC
V
L
OUT
Analog output for L-channel.
OUT
V
R
OUT
Analpg output for R-channel.
OUT
AGND
-
Analog ground.
V
-
Common voltage decoupting.
COM
ZEROR/ZEROA
OUT
Zero flag output for R-channel / Zero flag output for L / R-channel.
ZEROL/NA
OUT
Zero flag output for L-channel / No assign.
MD
IN
Mode control data input.
MC
IN
Mode control clock input.
ML
IN
Mode control latch input.
SCK
IN
System clock input.
6
S
1
5
Vcc
0
4
Z
Description
Data Inputs
Control Inputs
Output
DAC
Enhanced
Multi level
Delta Sigma
Modulator
DAC
Power Supply
11
5
4
IC872 KIA4558F(OP. Amp)
OUT A
1
-IN A
2
+IN A
3
V
4
EE
- 32 -
7
V
L
OUT
Output Amp and
Low-pass Filter
10
V
COM
Output Amp and
Low-pass Filter
8
V
R
OUT
6
9
8
V
CC
A
7
OUT B
B
6
-IN B
5
+IN B
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