Preliminary
S3C2451X RISC MICROPROCESSOR
PCM AUDIO INTERFACE
28-1
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
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PCM AUDIO INTERFACE
OVERVIEW
The S3C2451X has two ports of PCM Audio Interface. The PCM Audio Interface module provides PCM bi-
directional serial interface to an external Codec.
FEATURE
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Mono, 16bit PCM, 2 ports audio interface.
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Master mode only, this block always sources the main serial clock
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The sources of PCM clock are based on an internal PCLK or an External Clock
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Input (16bit 32depth) and output(16bit 32depth) FIFOs to buffer data
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DMA interface for Tx and/or Rx
SIGNALS
Name Direction
Description
PCM0_SCLK
PCM1_SCLK
Output
Serial shift clock
PCM0_FSYNC
PCM1_FSYNC
Output
Serial data indicator and synchronizer
PCM0_SDI
PCM1_SDI
Output
Serial PCM input data
PCM0_SDO
PCM1_SDO
Output
Serial PCM output data
PCM0_CDCLK
PCM1_CDCLK
Input
Optional External Clock source