WM8352 datasheet(51/336 Pages) WOLFSON

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Production Data

WM8352

PD, February 2011, Rev 4.4

SYSCLK

ADC / DAC SAMPLE

RATE DIVIDER

CLOCKING MODE

ADC / DAC

SAMPLE RATE

12.2880 MHz

000 = SYSCLK / 1

Normal

(256 * Fs)

48 kHz

001 = SYSCLK / 1.5

32 kHz

010 = SYSCLK / 2

24 kHz

011 = SYSCLK / 3

16 kHz

100 = SYSCLK / 4

12 kHz

101 = SYSCLK / 5.5

Not used

110 = SYSCLK / 6

8 kHz

111 = Reserved

Reserved

11.2896 MHz

000 = SYSCLK / 1

Normal

(256 * Fs)

44.1 kHz

001 = SYSCLK / 1.5

Not used

010 = SYSCLK / 2

22.05 kHz

011 = SYSCLK / 3

Not used

100 = SYSCLK / 4

11.025 kHz

101 = SYSCLK / 5.5

8.018 kHz

110 = SYSCLK / 6

Not used

111 = Reserved

Reserved

12.0000 MHz

000 = SYSCLK / 1

USB

(272 * Fs)

44.118 kHz

001 = SYSCLK / 1.5

Not used

010 = SYSCLK / 2

22.059 kHz

011 = SYSCLK / 3

Not used

100 = SYSCLK / 4

11.029 kHz

101 = SYSCLK / 5.5

8.021 kHz

110 = SYSCLK / 6

Not used

111 = Reserved

Reserved

2.0480 MHz

000 = SYSCLK / 1

Normal

(256 * Fs)

8 kHz

001 = SYSCLK / 1.5

Not used

010 = SYSCLK / 2

Not used

011 = SYSCLK / 3

Not used

100 = SYSCLK / 4

Not used

101 = SYSCLK / 5.5

Not used

110 = SYSCLK / 6

Not used

111 = Reserved

Reserved

Table 10 Derivation of Sample Rates in Normal / USB Modes

Note that, in USB mode, the ADC / DAC sample rates do not match exactly with the commonly used

sample rates (eg. 44.118 kHz instead of 44.100 kHz). At most, the difference is less than 0.5%,

which is within normal accepted tolerances. Data recorded at 44.100 kHz sample rate and replayed

at 44.118 kHz will experience a slight (sub 0.5%) pitch shift as a result of this difference.

Note: USB mode cannot be used to generate a 48kHz samples rate from a 12MHz MCLK; the FLL

should be used in this case.

The user must ensure correct synchronisation of data across the digital interfaces. This is particularly

important when different sample rates are used, as described above.

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