TP11368 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – Octal Adaptive Differential PCM Processor

March 1997
TP11368
Octal Adaptive Differential PCM Processor
General Description
The TP11368 is an octal (8) channel Adaptive Differential
Pulse Code Modulation (ADPCM) transcoder, fully compat-
ible to ITU G.726 recommendation in 40 kbps, 32 kbps,
24 kbps, 16 kbps and ANSI 32 kbps modes. The TP11368
ADPCM processor can operate on up to 16 independent
channels in an 8 kHz frame. Each channel is individually
configured, supporting both full and half duplex operation. All
input/output transfers occur on an interrupt basis using se-
rial, double buffered data registers. Together with National’s
TP3054/57 COMBO^® or TP3070/71 COMBO II devices, the
TP11368 forms complete ADPCM channels with Codec/
filtering.
Features
n CCITT G.726 compatible at 40, 32, 24, 16 kbps
n ANSI T1.301 compatible at 32 kbps
n 16-channel half-duplex (encode or decode) or 8-channel
full-duplex operation in 8 kHz frame
n Each channel individually configurable
n Selectable µ-law or A-law PCM coding
n Asynchronous 16 MHz master clock operation
n TTL and CMOS compatible inputs and outputs
n 28-pin PLCC or 24-pin DIP packages
n Power consumption of typ. 6 mW at +5V per full-duplex
channel
n On-Chip Power-On-Reset
n −40˚C to +85˚C operating temperature range
n Single 5V supply
Block Diagram
FIGURE 1. Block Diagram
TRI-STATE^® and COMBO^® are registered trademarks of National Semiconductor Corporation.
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