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PCM2702E (IC431) :
1. Terminal layout
2. Block diagram
USB
Packet
Data
D+
D–
USB
I/F
wrclk
V
BUS
DGNDU
mclk
USB
V
C
DD
Clock
Genelator
DGNDC
OSC
XTI
XTC
3. Pin function
Pin
Symbol
I/O
No.
1
XTI
I
Crystal oscillator input
2
V
C
-
Digital power supply for clock generator,+3.3V
DD
3
DGNDC
-
Digital ground for clock generator
4
V
-
Digital power supply ,+3.3V
DD
5
DGND
-
Digital ground
6
D
USB differential input/output plus
I/O
I
7
D
USB differential input/output minus
I/O
8
V
I
USB bus power
BUS
9
DGNDU
-
Digital ground for USB transceiver
10
O
Playback flag (L:playback H:idol)
PLYBCK
11
O
Suspend flag (L:suspend H:operational)
SSPND
Zero flag (L:normal H:zero)
12
ZERO
O
13
TEST3
I
Test pin 3. Connect to digital ground
14
TEST2
I
Test pin 2. Connect to digital ground
15
TEST1
I
Test pin 1. Connect to digital ground
16
TEST0
I
Test pin 0. Connect to digital ground
17
V
R
-
Analog supply forR-channel ,+5v
CC
18
AGNDR
-
Analog ground for R-channel
19
V
R
O
Analog output for R-channel
OUT
20
AGND
-
Analog ground
21
V
-
DC common-mode voltage for DAC
COM
22
V
-
Analog supply ,+5v
CC
23
V
L
O
Analog output for L-channel
OUT
24
AGNDL
-
Analog ground for L-channel
25
V
L
-
Analog supply for L-channel, +5v
CC
26
AGNDP
-
Analog ground for PLL
27
V
P
-
Analog supply for PLL, +5v
CC
28
XTO
O
Crystal oscillator output
D/A converter
Audio
Data
Multi-
FIFO
8x
Level
Over sampling
Delta-
Digital Filter
Sigma
Modulator
System Clock
Audio
Clock
SpAct™
Genelator
V
P
DGNDP
V
DD
CC
Low-Pass
DAC
Filter
Low-Pass
DAC
Filter
Power supply
AGND
V
DGND
DD
Function
NX-MD1R/NX-MD1
OUTL
V
COM
OUTR
1-59
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