1-32
Pin No. Port Name I/O FUNCTION
1 LRCK I LRCK Clock Input (fs). (1)
2 DATA I Serial Audio Data Input. (1)
3 BCK I Bit Clock Input for Serial Audio Data. (1)
4 CLKO O Buffered Output of System Clock.
5 XTI I Oscillator Input / External Clock Input.
6 XTO O Oscillator Output.
7 DGND - Digital Ground.
8V
DD
- Digital Power. + 5 V
9V
CC
2R - Analog Power. + 5V
10 AGND2R - Analog Ground.
11 EXTR O Rch, Common Pin of Analog Output Amp.
12 NC - Non Connection.
13 V
OUT
R O Rch, Analog Voltage Output of Audio signal.
14 AGND1 - Analog Ground.
15 V
CC
1 - Analog Power. + 5 V
16 V
OUT
L O Lch, Analog Voltage Output of Audio signal.
17 zeror O Rch Zero Data Flag (Open Drain)
18 EXTL O Lch, Common Pin of Analog Output Amp
19 AGND2L - Analog Ground.
20 V
CC
2L - Analog Power. + 5 V
21 zerol O Lch Zero Data Flag (Open Drain)
22 rst I Reset. When this pin is LOW, the DF & modulators are held in reset. (2)
23 cs / IWO I Chip Select / Input format selection. (3)
24 MODE I Mode Control Select. (H: Software, L: Hard ware) (2)
25 mute I Mute Control. (2)
26 MD / DM0 I Mode Control, Data / De-emphasis selection 1. (2)
27 MC / DM1 I Mode Control, BCK / De-emphasis selection 2. (2)
28 ML / IIS I Mode Control, WDCK / Input format selection. (2)
(1) Pins 1, 2, 3: Schmitt-trigger input.
(2) Pins 22, 24, 25, 26, 27, 28: Schmitt-trigger input with internal pull-up.
(3) Pin 23: Schmitt-trigger input with internal pull-down.
PCM1735
Mode
Control
I/F
Serial
Input
I/F
Low-pass
Filter
Low-pass
Filter
BPZ-Cont
DAC
DAC
Crystal OSC
Power Supply
EXTL
V
OUT
R
V
OUT
L
Open drain
ZEROL
DGND
V
DD
AGND1
V
CC
1
SCK
RST
MC/DM1
MD/DM0
ML/IIS
DATA
BCK
LRCK
CLKOXTOXTI
EXTR
AGND2R
V
CC
2R
AGND2L
V
CC
2L
MODE
MUTE
CS/IWO
Multi-level
Delta-Sigma
Modulator
8X Oversampling
Digital Filter
with
Function Controller
ZEROR
22
25
24
23
26
27
28
2
1
3
4 15 14 8 7
17
21
11
13
18
16
5 6
1091920
PCM1735
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