TCM29C13, TCM29C14, TCM29C16, TCM29C17,

TCM129C13, TCM129C14, TCM129C16, TCM129C17

COMBINED SINGLE-CHIP PCM CODEC AND FILTER

SCTS011H – APRIL 1986 – REVISED JULY 1996

2

POST OFFICE BOX 655303

description (continued)

These devices are designed to perform the transmit encoding (A/D conversion) and receive decoding (D/A

conversion) as well as the transmit and receive filtering functions in a pulse-code-modulated system. They are

intended to be used at the analog termination of a PCM line or trunk.

The TCM129C13, TCM129C14, TCM129C16, TCM129C17, TCM29C13, TCM29C14, TCM29C16, and

TCM29C17 provide the band-pass filtering of the analog signals prior to encoding and after decoding. These

combination devices perform the encoding and decoding of voice and call progress tones as well as the

signaling and supervision information.

The TCM29C13, TCM29C14, TCM29C16, and TCM29C17 are characterized for operation from 0

°C to 70°C.

The TCM129C13, TCM129C14, TCM129C16, and TCM129C17 are characterized for operation from – 40

°C

to 85

°C.

functional block diagram

Successive

Approximation

Buffer

PWRO+

PWRO –

GSR

GSX

ANLG IN –

ANLG IN+

Transmit Section

Receive Section

SIGR†

Control

Section

PDN

Control

Logic

DCLKR

PCM IN

Input

Register

Digital-

to-Analog

Control

Logic

Reference

Sample

and Hold

and DAC

Analog-

to-Digital

Control

Logic

Gain

Set

Filter

Reference

FSX/TSXE

Autozero

Output

Register

TSX/DCLKX

PCM OUT

Comparator

Sample

and Hold

and DAC

Filter

SIGX/ASEL

CLKX

CLKSEL

ANLG

LOOP†

FSR/TSRE

CLKR†

ANLG

GND

DGTL

GND

VBB

VCC

‡

† TCM29C14 and TCM129C14 only

‡ TCM29C13, TCM29C16, TCM29C17, TCM129C13, TCM129C16, and TCM129C17 only