AK4955 Datasheet, PDF (3/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

■ Block Diagram
[AK4955]
AVDD VSS1
REGFIL VCOM
DVDD TVDD VSS2
Internal
MIC
Ex ternal
MIC
MPWR
LIN1
RIN1
LIN2
RIN2
PMM P
MIC Power
Supply
PM MICL
MIC-Amp
PM MICR
LDO: 2.3V
PMADL or PMADR
A/D HPF
Analog Logic
MIC Power, Video-out-Amp
(DSP Block)
PMDSP
DSP1
Line Out
MIN
LOUT
ROUT
LVDD
Speaker
SVDD
VSS3
SPP
SPN
Composite
Video Out
VOUT
P ML O
PMBPE
PMBPG
BEEP
GEN
PMPFIL
PMDSP
H PF3
LPF
EQ0
4 Band EQ
Stereo Emphasis
ALC
1 Band EQ
DSP2
PMSPK
SPK-amp
PM DAC
M ono/
D/A DEM Stereo SMUTE DVOL
PM V
LPF
+6/9/12/16.5dB
CLAMP
PMCP
CLK
GEN
Charge
Pump
VIN
PVEE
Total: 36pin
Figure 1. Block Diagram
Audio
I/ F
PMPLL
PLL
Control
Regis ter
PDN
BICK
LRCK
SDTO
SDTI
MCKO
MCKI
CSN/ SDA
CCLK/SCL
CDTIO/CAD0
I2C
MS1343-E-00
-3-
2011/12