W681310 Datasheet, PDF (30/36 Pages) Winbond – 3V SINGLE-CHANNEL VOICEBAND CODEC

W681310
1.5K
VDD
1K
0.1 uF
+
ELECTRET
MICROPHONE
1.5K
22 uF
62k
1.0 uF
1.0 uF
3.9K
100pF
3.9K
100pF
62K
0.01 uF
0.1 uF
27K
27K
27K
U4
17 _AO
18 _AI-
19 _AI+
20
1
VAG
VREF
2
RO-
3 _PAI
4 _PAO-
5 _PAO+
W681310
14
FST
BCLKT
PCMT
12
13
11
MCLK
PCMR
BCLKR
8
9
7
FSR
8 KHz Frame Sy nc
2.048 MHz
Bit Clock
PCM OUT
PCM IN
u/A
16
10
MODE SELECT
PUI
POWER CONTROL
SPEAKER
Figure 11.3 Handset Interface
VDD
0.1 uF
1.0 uF
27K
27K
600
27K
0.01 uF
TRANSFORMER
0.1 uF
600 OHM 1:1
27K
U5
17 _AO
18 _AI-
19 _AI+
20
1
VAG
VREF
2 _RO-
3 _PAI
4 _PAO-
5 _PAO+
W681310
FST
BCLKT
14
12
13
PCMT
MCLK ¹¹
8
PCMR
BCLKR
FSR
9
7
8 KHz Frame Sy nc
4.096 MHz
Bit Clock
PCM OUT
PCM IN
B1/B2 SELECT
u/A
PUI
16
10
MODE SELECT
POWER CONTROL
Figure 11.4 Transformer Interface Circuit in GCI mode
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