w681310 Winbond Electronics Corp America, w681310 Datasheet - Page 30

• Manufacturer Part Number: w681310
• Description: 3v Single-channel Voiceband Codec
• Manufacturer: Winbond Electronics Corp America

TRANSFORMER
600 OHM 1:1
ELECTRET
MICROPHONE
+
SPEAKER
1.5K
600
1.0 uF
0.01 uF
27K
1.0 uF
1.0 uF
1.5K
Figure 11.4 Transformer Interface Circuit in GCI mode
0.01 uF
3.9K
0.1 uF
3.9K
0.1 uF
27K
22 uF
100pF
62K
Figure 11.3 Handset Interface
62k
27K
27K
27K
100pF
27K
27K
- 30 -
1K
17
18
19
20
1
2
3
4
5
17
18
19
20
1
2
3
4
5
U4
AO
AI-
AI+
VAG
VREF
RO-
PAI
PAO-
PAO+
W681310
U5
AO
AI-
AI+
VAG
VREF
RO-
PAI
PAO-
PAO+
W681310
VDD
VDD
BCLKR
BCLKT
PCMR
PCMT
MCLK
FSR
FST
BCLKR
PUI
BCLKT
u/A
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
2.048 MHz
Bit Clock
PCM OUT
W681310
PCM IN
4.096 MHz
Bit Clock
PCM OUT
PCM IN