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