Multi-mode TDM interface circuit
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United States of America Patent
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-
Feb 11, 1997
Grant Date -
N/A
app pub date -
Jun 5, 1995
filing date -
Jun 5, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-mode time division multiplexing (TDM) interface circuit for interfacing between a serial data port and a data buffer is provided. The TDM interface circuit contains a transmitter and a receiver section. The circuit is programmable to operate in a variety of modes and is capable of supporting various multi-channel TDM interfaces as well as single channel analog interfaces. The circuit is programmable by writing a control word to a control register. In operation the circuit receives a frame synchronization signal, a gated bit clock signal, and a bit clock signal from the circuit with which it is interfacing on the serial data port. A base address input to a base address register provides up to 9 of the most significant bits of a data buffer address. A 12-bit counter is used to generate the remaining (least significant) bits of the data buffer address according to the control word in the control register.
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