w681512 Winbond Electronics Corp America, w681512 Datasheet - Page 30

• Manufacturer Part Number: w681512
• Description: Single-channel Voiceband Codec
• Manufacturer: Winbond Electronics Corp America

600 OHM 1:1
ELECTRET
MICROPHONE
TRANSFORMER
+
SPEAKER
1.5K
600
27K
1.0 uF
1.0 uF
1.0 uF
1.5K
Figure 11.4 Transformer Interface Circuit in GCI mode
0.01 uF
0.01 uF
3.9K
3.9K
27K
22 uF
62K
Figure 11.3 Handset Interface
62K
27K
27K
27K
100pF
100pF
27K
27K
- 30 -
1K
17
18
19
20
2
1
3
4
5
17
18
19
20
2
1
3
4
5
U4
AO
AI-
AI+
VAG
RO-
RO+
PAI
PAO-
PAO+
W681512
U5
AO
AI-
AI+
VAG
RO-
RO+
PAI
PAO-
PAO+
W681512
VDD
VDD
BCLKR
BCLKT
PCMR
PCMT
MCLK
FSR
FST
PUI
BCLKR
u/A
BCLKT
PCMR
PCMT
MCLK
FSR
FST
PUI
u/A
0.1 uF
0.1 uF
14
12
13
11
8
9
7
16
10
14
12
13
11
8
9
7
16
10
POWER CONTROL
MODE SELECT
POWER CONTROL
8 KHz Frame Sy nc
MODE SELECT
8 KHz Frame Sy nc
B1/B2 SELECT
W681512
2.048 MHz
Bit Clock
PCM OUT
PCM IN
2.048 MHz
Bit Clock
PCM OUT
PCM IN