cs4271 Cirrus Logic, Inc., cs4271 Datasheet - Page 25

• Manufacturer Part Number: cs4271
• Description: 24-bit, 192 Khz Stereo Audio Codec
• Manufacturer: Cirrus Logic, Inc.

5.1.3.2
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.
DS592F1
Clock Ratio Selection
Double Speed
Double Speed
Double Speed
Double Speed
Single Speed
Single Speed
Single Speed
Single Speed
Quad Speed
Quad Speed
Quad Speed
Quad Speed
Table 4. Clock Ratios - Stand Alone Mode Without External Crystal
Table 3. Clock Ratios - Stand Alone Mode With External Crystal
External Crystal Not Used, MCLK=Input
External Crystal Used, MCLK=Output
MCLK/LRCK
MCLK/LRCK
MCLK/LRCK
MCLK/LRCK
256
128
128
256
128
128
256
128
256
384
512
128
192
256
128
64
64
96
Master Mode
Master Mode
Slave Mode
Slave Mode
32, 48, 64, 96, 128
SCLK/LRCK
SCLK/LRCK
SCLK/LRCK
SCLK/LRCK
32, 64, 128
32, 64, 128
32, 64, 128
32, 48, 64
32, 64
32, 64
32, 64
32, 64
32, 64
64
64
64
64
64
32
32
48
LRCK
LRCK
LRCK
LRCK
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
Fs
CS4271
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