CS8421-CNZ datasheet(22/38 Pages) CIRRUS

Part #	CS8421-CNZ

Description	32-bit, 192 kHz Asynchronous Sample Rate Converter

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Manufacturer	CIRRUS [Cirrus Logic]

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22 / 38 page

22

DS641F1

CS8421

4.3.7

Clocking

In order to ensure proper operation of the CS8421, the clock or crystal attached to XTI must simultaneous-

ly satisfy the requirements of LRCK for both the input and output as follows:

•

If the input is set to master, Fsi

≤ XTI/128 and Fso ≤ XTI/130.

•

If the output is set to master, Fso

≤ XTI/128 and Fsi ≤ XTI/130.

•

If both input and output are set to slave, XTI

≥ 130*[maximum(Fsi,Fso)], XTI/Fsi < 3750, and XTI/Fso <

3750.

XTI

XTO

CC

R

Figure 10. Typical Connection Diagram for Crystal Circuit

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