TCM29C13 Datasheet, PDF (4/25 Pages) Texas Instruments – COMBINED SINGLE-CHIP PCM CODEC AND FILTER

TCM29C13, TCM29C14, TCM29C16, TCM29C17,
TCM129C13, TCM129C14, TCM129C16, TCM129C17
COMBINED SINGLE-CHIP PCM CODEC AND FILTER
SCTS011H – APRIL 1986 – REVISED JULY 1996
Terminal Functions
NAME
PDN
PWRO +
PWRO –
SIGR
SIGX/ASEL
TSX/DCLKX
VBB
VCC
TERMINAL NO.
TCM29C16
TCM29C13 TCM29C14 TCM29C17 ^I/O
TCM129C13 TCM129C14 TCM129C16
TCM129C17
5
5
4
I
2
2
2
O
3
3
3
O
8
O
15
18
I
14
17
12
I/O
1
1
1
20
24
16
DESCRIPTION
Power-down select. The device is inactive with a TTL low-level input to
this terminal and active with a TTL high-level input to the terminal.
Noninverting output of power amplifier. Can drive transformer hybrids or
high-impedance loads directly in either a differential or a single-ended
configuration
Inverting output of power amplifier. Functionally identical with and
complementary to PWRO +.
Signaling bit output, receive channel. In a fixed-data-rate mode, outputs
the logical state of the 8th bit (LSB) of the PCM word in the most recent
signaling frame.
A-law and µ-law operation select. When connected to VBB, A-law is
selected. When connected to VCC or GND, µ-law is selected. When not
connected to VBB, a TTL-level input is transmitted as the eighth bit (LBS)
of the PCM word during signaling frames on PCM OUT (TCM29C14 and
TCM129C14 only). SIGX/ASEL is internally connected to provide µ-law
operational for TCM29C16 and TCM129C16 and A-law operation for
TCM29C17 and TCM129C17.
Transmit channel time-slot strobe (output) or data clock (input) for the
transmit channel. In the fixed-data-rate mode, this terminal is an
open-drain output to be used as an enable signal for a 3-state output
buffer. In the variable-data rate mode, DCLKX becomes the transmit
data clock, which operates at TTL level from 64 kHz to 2.048 MHz.
Most negative supply voltage. Input is – 5 V ± 5%.
Most positive supply voltage. Input is 5 V ± 5%
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