KS8620
FEATURES
- plete CODEC and filtering system
- Encoding / Decoding : 8 bits µ-law PCM
- On-chip auto zero, sample and hold, and precision voltage references
- Low power dissipation : 60m W ( operating ) 3m W ( standby )
- + 5V operation
- TTL or CMOS patible
- Automatic power down
KS8620D
PIN CONFIGURATION
V BB GNDA VF RO V CC 1 2 3 4 16 VFI XI+ 15 VFXI14 GSX
13 TSX 12 FSX 11 DX 10 BCLK X 9 MCLK X
FS R 5 DR BCLK R/CLKSEL 6 7 8
..
MCLK R/PDN w w w D a S . a t h 4 e U c o t m .
BLOCK DIAGRAM
R2
1 Chip CODEC for Digital Answering phone
GSx VFx IR1
Auto-zero logic Switched Capacitor B.P.F
15 Analog In 16
+
VFx I+
RC Active Filter
Sample & Hold DAC
11 Dx parator
Voltage Reference
A/D Control Logic
X’it register DE
VFRO
Power Amplifier
RC Active Filter
Switched Capacitor L.P.F
Sample & Hold DAC
Receive register CLK
Timing and Control
13...
