W681512 Datasheet, PDF (30/38 Pages) Winbond – SINGLE-CHANNEL VOICEBAND CODEC

W681512
1.5K
VDD
1K
0.1 uF
+
ELECTRET
MICROPHONE
1.5K
22 uF
62K
1.0 uF
1.0 uF
3.9K
3.9K
100pF
100pF
62K
0.01 uF
27K
27K
27K
U4
17 _AO
18 _AI-
19 _AI+
20
2
VAG
RO-
1 _RO+
3 _PAI
4 _PAO-
5 _PAO+
W681512
FST
BCLKT
14
12
13
PCMT
MCLK ¹¹
8
PCMR ₉
BCLKR
FSR
7
8 KHz Frame Sy nc
2.048 MHz
Bit Clock
PCM OUT
PCM IN
u/A
PUI
16
10
MODE SELECT
POWER CONTROL
SPEAKER
Figure 11.3 Handset Interface
VDD
0.1 uF
27K
27K
1.0 uF
600
27K
0.01 uF
TRANSFORMER
600 OHM 1:1
27K
U5
17 _AO
18 _AI-
19 _AI+
20
2
VAG
RO-
1 _RO+
3 _PAI
4
PAO-
5 _PAO+
W681512
FST
BCLKT
14
12
13
PCMT
MCLK ¹¹
PCMR
8
9
BCLKR
FSR
7
8 KHz Frame Sy nc
2.048 MHz
Bit Clock
PCM OUT
PCM IN
B1/B2 SELECT
16 MODE SELECT
u/A
PUI
10
POWER CONTROL
Figure 11.4 Transformer Interface Circuit in GCI mode
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