AK7600 Datasheet, PDF (12/38 Pages) Asahi Kasei Microsystems – 2/6-Channel Audio CODEC with Digital EQ

[AK7600]
OPERATION OVERVIEW
■System Clock
The external clock input or X’tal input is available for MCLK clock source. (Figure 7, Figure 8) The required clock for
master mode is 256fs MCLK only.
In the normal operation, if the clock is stopped, click noise may occur when the clock supply is restarted. It can be prevent
by external mute.
LRCK
fs
44.1kHz
MCLK (MHz)
256fs
11.2896
BICK (MHz)
64fs
2.8224
Table 1. System Clock Example
■ Clock Source
The clock for the XTI pin can be generated by two methods:
1) External Clock
XTI
External Clock
2) X’tal
XTO
AK7600
Figure 7. External Clock Mode
Note. Do not input the clock over DVDD.
XTI
XTO
AK7600
Figure 8. X’tal Mode
Note: The capacitor is dependent on X’tal value. (Typ.15pF)
When using X’tal, DVDD=4.5~5.5V.
MS0999-E-00
- 12 -
2008/09