AK4458VN Datasheet, PDF (6/83 Pages) Asahi Kasei Microsystems – 115dB 768kHz 32-bit 8ch Premium DAC

[AK4458]
■ Functions
Block
Functions
PCM Data Interface
DSD Data Interface
DATT、Soft Mute
This block executes serial/parallel conversion of SDTI input 32bit data by
synchronizing with LRCK and BICK.
1-bit data that is input from DSDL1-4 and DSDR1-4 pins is received by
synchronizing with DCLK.
Apply DATT and Soft Mute process to input data.
De-emphasis
8x Interpolator
ΔΣ Modulator
Noise Rejection Filter
SCF
Apply De-emphasis process to input data.
FIR filters that over sample 1fs rate data to 8fs rate.
Output multi-bit data to SCF. This block consists of a third-order digital delta-sigma
modulator.
Attenuate out of band noise to prevent degradation of analog characteristics.
A primary switched capacitor filter that converts a multi-bit output of delta-sigma
modulator to an analog signal.
LDO
Generate a power for internal digital circuit (1.8V typ.).
Control Register
Keep register settings for each mode.
Clock Divider
Divide Master Clock
In PCM mode, master clock is divided automatically by fs rate auto detection
function. In DSD mode, the master clock frequency is set by DCKS bit.
014011794-E-00
-6-
2015/01