[AK4753]
■ DSP Input Signals Setting
The AK4753 has three input sources for DSP. The inputs of digital, analog and mix signals can be changed by SEL1-0
bits. In the initialization, the setting is SEL1-0 bits = “00” (Analog Input).
SEL1-0 bits
Digital-in
SW1
DSP
Block
MIX
ADC
Figure 43. DSP Input source
SEL1 bit
SEL0 bit
DSP input source
Analog
Note
Default
0
0
1
1
0
1
0
1
Digital
MIX
N/A
(Analog source)/2 + Digital source/2
Table 18. DSP Input Setting (N/A: Not Available)
■ Bypass Mode
The AK4753 has a BYPASS pin for the DSP bypass mode. When the BYPASS pin is “L”, the DSP blocks are enabled.
When the BYPASS pin is “H”, the DSP blocks are disabled and the DATT outputs are skipped over the DSP blocks to
the DAC.
BYPASS pin
Mode
H
L
DSP Bypass Mode
Normal Operation
Table 19. Bypass Mode
BYPASS pin
“L”
“L”
DSP1
DAC1
“H”
“H”
DATT
L+R
2
DAC2
“H”
“L”
“H”
“L”
DSP2
MIX
Figure 44. Bypass Mode
MS1311-E-00
2011/07
- 32 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
