CODEC FOR DIGITAL ANSWERING PHONE
S5T8554B03
INTRODUCTION
The S5T8554B03 consists of on-chip PCM encoders, decoders (PCM CODECs)
and PCM line filter. This device provides all the functions required to
interface a full-duplex voice telephone circuit, digital answering phone. This
device is designed to perform the transmit encoding and receive decoding as
well as the transmit and receive filtering function in PCM system. Also it is inten-
ded to be used at the analog termination of a PCM line / trunk. This device
provide the Band pass filtering of the analog signals prior to encoding and
after decoding. This combination device performs the encoding and decoding
of voice and call progress tones as well as the signaling and supervision
information.
16鈭扗IP鈭?00
16鈭扴OP鈭払D300
FEATURES
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Complete CODEC and filtering system
Encoding / Decoding : 8 bits
碌-law
PCM
On-chip auto zero, sample and hold,
and precision voltage references
Low power dissipation : 60mW ( operating )
3mW ( standby )
鹵
5V operation
TTL or CMOS compatible
Automatic power down
ORDERING INFORMATION
Device
S5T8554B03-D0B0
S5T8554B03-S0B0
Package
16鈭扗IP鈭?00
16鈭扴OP鈭払D300
0 ~ + 70擄C
Operating Temperature
PIN CONFIGURATION
V
BB
GNDA
VF
R
O
V
CC
1
2
3
4
16 VFI
X
I+
15 VF
X
I-
14 GS
X
S5T8554B03
KS8620
13 TS
X
12 FS
X
11 D
X
10 BCLK
X
9
MCLK
X
FS
R
5
D
R
BCLK
R
/CLKSEL
MCLK
R
/PDN
6
7
8
1
next
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