TP11368

TP11368 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 compatible 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 serial, 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 DS012902-1 FIGURE 1. Block Diagram TRI-STATE ® and COMBO ® are registered trademarks of National Semiconductor Corporation. © 1997 National Semiconductor Corporation DS012...