AK4343 Datasheet, PDF (29/98 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

ASAHI KASEI
[AK4343]
b) PLL reference clock: BICK or LRCK pin
Sampling frequency corresponds to 7.35kHz to 48kHz by changing FS3-0 bits (see Table 7).
AK4343
MCKO
MCKI
BICK
LRCK
SDTI
DSP or µP
32fs or 64fs
1fs
BCLK
LRCK
SDTO
Figure 20. PLL Slave Mode 2 (PLL Reference Clock: BICK pin)
AK4343
MCKO
MCKI
BICK
LRCK
SDTI
≥ 32fs
1fs
DSP or µP
BCLK
LRCK
SDTO
Figure 21. PLL Slave Mode 2 (PLL Reference Clock: LRCK pin)
The external clocks (MCKI, BICK and LRCK) should always be present whenever the DAC is in operation (PMDAC bit
= “1”). If these clocks are not provided, the AK4343 may draw excess current and it is not possible to operate properly
because utilizes dynamic refreshed logic internally. If the external clocks are not present, the DAC should be in the
power-down mode (PMDAC bit = “0”).
MS0478-E-01
- 29 -
2006/10