31
AVR-3803/1083/AVC-3570
PCM1791 Terminal Function
DESCRIPTIONS
Pin
No.
Pin Name
PCM1791 (AD: IC523~526)
1 LRCK I
Left and right clock (fs) input for normal operation. WDCK clock input in external DF mode.
Connected to GND in DSD mode*
2 BCK I Bit clock input. Connected GND for DSD mode*
3DATA I
Serial audio data input for normal operation. L-channel audio data input for external DF and DSD
modes*
4 MUTE I
Analog output mute control for normal operation. R-channel audio data input for external DF and
DSD modes*
5 SCKI I System Clock Input. BCK (64fs) clock input for DSD mode*
6 RST I Reset*
7VDD — Digital power supply, +3.3 V
8 DGND — Digital ground
9 AGNDF — Analog ground (DACFF)
10 VCCR — Analog power supply (R-channel DAC), +5.0 V
11 AGNDR — Analog ground (R-channel DAC)
12 VOUTR- O R-channel analog voltage output-
13 VOUTR+ O R-channel analog voltage output+
14 VCOM — Internal bias de-coupling pin
15 VCCC — Analog power supply (internal bias), +5.0 V
16 AGNDC — Analog ground (internal bias)
17 VOUTL+ O L-channel analog voltage output+
18 VOUTL- O L-channel analog voltage output-
19 AGNDL — Analog ground (L-channel DAC)
20 VCCL — Analog power supply (L-channel DAC), +5.0 V
21 VCCF — Analog power supply ( DACFF), +5.0 V
22 ZEROR O Zero flag for R-channel
23 ZEROL O Zero flag for L-channel
24 RSV — Reserved pin. It must be open.
25 MDO O Serial data output for function control register**
26 MDI I Serial data input for function control register*
27 MC I Shift clock for function control register*
28 MS I Mode control chip select and latch signal*
I/O
1
28
2
27
3
26
5
4
25
6
24
7
23
8
22
9
21
10
20
11
19
12
18
13
17
14
LRCK
BCK
DATA
SCKI
MUTE
RST
V
DGND
AGNDF
V R
AGNDR
V R-
V R+
V
15
16
MS
MC
MDO
MDI
RSV
ZEROL
ZEROR
V F
V L
AGNDL
V L-
V L+
AGNDC
V C
DD
COM
CC
CC
CC
CC
OUT
OUT
OUT
OUT
TOP VIEW
* Schmitt trigger input, 5V tolerant.
** Tristate output.
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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