CS4271-CZZ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS4271-CZZ

24-Bit, 192 kHz Stereo Audio CODEC

Cirrus Logic 

CS4271

5.1.3.2 Clock Ratio Selection

Depending on the use of an external crystal, or whether the CS4271 is in Master or Slave Mode, different

MCKL/LRCK and SCLK/LRCK ratios may be used. These ratios are shown in the Tables 3 and 4 below.

Table 3. Clock Ratios - Stand Alone Mode With External Crystal

External Crystal Used, MCLK=Output

Single Speed

Double Speed

Quad Speed

Master Mode

MCLK/LRCK

SCLK/LRCK

256

64

128

64

128

64

LRCK

Fs

Fs

Fs

Single Speed

Double Speed

Quad Speed

Slave Mode

MCLK/LRCK

SCLK/LRCK

256

32, 64, 128

128

32, 64

128

32, 64

LRCK

Fs

Fs

Fs

Table 4. Clock Ratios - Stand Alone Mode Without External Crystal

External Crystal Not Used, MCLK=Input

Single Speed

Double Speed

Quad Speed

Master Mode

MCLK/LRCK

SCLK/LRCK

256

64

128

64

64

32

LRCK

Fs

Fs

Fs

Single Speed

Double Speed

Quad Speed

Slave Mode

MCLK/LRCK

SCLK/LRCK

256

32, 64, 128

384

32, 48, 64, 96, 128

512

32, 64, 128

128

32, 64

192

32, 48, 64

256

32, 64

64

32

96

48

128

32, 64

LRCK

Fs

Fs

Fs

Fs

Fs

Fs

Fs

Fs

Fs

DS592F1

25

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