AK4458 Datasheet, PDF (62/84 Pages) Asahi Kasei Microsystems – 115dB 768kHz 32-bit 8ch Premium DAC

[AK4458]
■ Synchronization Function (PCM Mode)
● Synchronization Function (Analog Output Phase Synchronization)
This function synchronizes analog output phase by suppressing the phase difference of the AK4458 and other
AKM devices with synchronization function to within 3/256fs. Analog output phase synchronization function
becomes valid when input data at all channels are continuously “0” for 8192 times if SYNCE bit is set to “1”
during operation in PCM mode or when RSTN bit is set to “0”.
Example) In the case of using the AK4458 with the AK4452 (Figure 62)
The AK4452 and the AK4458 have synchronization function. The output phase difference between the
AK4452’s output (AOUT1LP/N_2, AOUT1RP/N_2) and the AK4458’s output (AOUT1-4LP/N_8,
AOUT1-4RP/N_8) will be within 3/256fs.
DSP
MCLK
LRCK
AK4452
MCLK AOUT1LP/N
LRCK AOUT1RP/N
AOUT1LP/N_2
AOUT1RP/N_2
AK4458
MCLK AOUT1LP/N
LRCK AOUT1RP/N
AOUT4LP/N
AOUT4RP/N
AOUT1LP/N_8
AOUT1RP/N_8
AOUT4LP/N_8
AOUT4RP/N_8
Figure 62. System Example of Clock Synchronization Function
014011794-E-01
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2015/08