AK4753 Datasheet, PDF (35/85 Pages) Asahi Kasei Microsystems – 2-in, 4-out CODEC with DSP Functions

[AK4753]
1. Stereo Mode (SPC1-0 bits = “00”: SW2 = “0”, SW3= “0”, SW4= “0”, SW5= “0”, SW6= “0”)
Table 20 shows the signal status and output condition when SPC1-0 bits= “00”. This output configuration is suitable for
a traditional stereo speaker system. Refer to the Figure 55 for functions and signal paths of the DSP block.
Digital-in
ADC
SEL1-0 bit SPC1-0 bit
SW1
SW2, 3, 4, 5, 6
L, R
0: L1, R1
DSP1
for L1, R1
HPF, LPF
EQ, Limiter
L1, R1
SW3
0
1
DAC1
DIG
L1+
+
DAC1L
ANA
SW5
−₀
1
DAC1R L1−
ANA
DATT
MIX
SW2
0
1
DSP2
for L2, R2
HPF, LPF
EQ, Limiter
SW4
DAC2
DIG
0
+ DAC2L ^R1+
1
ANA
SW6
−₀
1
DAC2R R1−
ANA
Figure 47. Block Diagram for Signal Path (SPC1-0 bits =“00”)
Output Setting
SPC1 bit SPC0 bit
0
0
(default) (default)
Signal and Output Block
Audio Signal Polarity DAC
L1
+
DAC1L
−
DAC1R
R1
+
DAC2L
−
DAC2R
Pin
LOUT+
LOUT−
ROUT+
ROUT−
Table 20. Stereo Mode Setting and Output Signal Details
Output
L1+
L1−
R1+
R1−
Digital Source
Analog Source
L ch
R ch
Digital-in
Block1
L1 → ^LOUT+
LOUT−
AK4753
Block2
Analog-in
R1→ ^ROUT+
ROUT−
Figure 48. 2-channels (Stereo) mode
L ch
2-channel
(Full-differential)
R ch
MS1311-E-00
- 35 -
2011/07