TCM29C16 datasheet(4/25 Pages) TI

4 / 25 page

TCM29C13, TCM29C14, TCM29C16, TCM29C17,

TCM129C13, TCM129C14, TCM129C16, TCM129C17

COMBINED SINGLE-CHIP PCM CODEC AND FILTER

SCTS011H – APRIL 1986 – REVISED JULY 1996

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

Terminal Functions

TERMINAL NO.

NAME

TCM29C13

TCM129C13

TCM29C14

TCM129C14

TCM29C16

TCM29C17

TCM129C16

TCM129C17

I/O

DESCRIPTION

PDN

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.

PWRO +

Noninverting output of power amplifier. Can drive transformer hybrids or

high-impedance loads directly in either a differential or a single-ended

configuration

PWRO –

Inverting output of power amplifier. Functionally identical with and

complementary to PWRO +.

SIGR

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.

SIGX/ASEL

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.

TSX/DCLKX

I/O

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.

VBB

Most negative supply voltage. Input is – 5 V

±5%.

VCC

Most positive supply voltage. Input is 5 V

±5%

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