cs49329 Cirrus Logic, Inc., cs49329 Datasheet - Page 86

• Manufacturer Part Number: cs49329
• Description: Multi-standard Audio Decoder Family
• Manufacturer: Cirrus Logic, Inc.

CMPDAT, SDATAN2—PCM Audio Data Input Number Two: Pin 27
DC—Reserved: Pin 38
DD—Reserved: Pin 37
86
CMPREQ, LRCLKN2—PCM Audio Input Sample Rate Clock: Pin 29
When the CDI is configured as a digital audio input, this pin serves as a bidirectional digital-
audio frame clock that is an output in master mode and an input in slave mode. LRCLKN2
typically is run at the sampling frequency. In slave mode, LRCLKN2 operates asynchronously
from all other CS493XX clocks. In master mode, LRCLKN2 is derived from the CS493XX
internal clock generator. In either master or slave mode, the polarity of LRCLKN2 for a
particular subframe can be programmed by the DSP. When the CDI is configured for bursty
delivery, or parallel audio data delivery is being used, CMPREQ is an output which serves as
an internal FIFO monitor. CMPREQ is an active low signal that indicates when another block
of data can be accepted. BIDIRECTIONAL - Default: INPUT
Digital-audio data input that can accept from one to six channels of compressed or PCM data.
SDATAN2 can be sampled with either edge of SCLKN2, depending on how SCLKN2 has been
configured. Similarly CMPDAT is the compressed data input pin when the CDI is configured for
bursty delivery. When in this mode, the CS493XX internal PLL is driven by the clock recovered
from the incoming data stream. INPUT
This pin is reserved and should be pulled up with an external 4.7k resistor.
This pin is reserved and should be pulled up with an external 4.7k resistor.
CS49300 Family DSP
DS339F7