AK7712A-VT Datasheet, PDF (75/87 Pages) Asahi Kasei Microsystems – Built-in 20-bit ADC/DAC Sophisticated Audio DSP

ASAHI KASEI
„ System Clock
The system clock of AK7712A is XTI at master
mode. And these are XTI, LRCK(fs) and BCLK at
slave mode. In case of using slave mode, XTI and
LRCK must be synchronized but those phases do not
need to be muched.
[AK7712A-VT]
Internal Clock Circuit
Master clock can be obtained by quartz oscillator
connected between XTI pin and XTO pin, or by
openning XTO pin and inputting the external
clock to XTI pin.
The frequencies of each clocks needed for standard
audio rate is shown in the table below.
Example of Quartz Oscillator Connection
LRCK (fs)
(kHz)
32.0
44.1
48.0
(fs)
256
384
512
256
384
256
384
XTI
(MHz)
8.1920
12.2880
16.3840
11.2896
16.9344
12.2880
18.4320
0180-E-02
- 75 -
1997/12