ak8823 AKM Semiconductor, Inc., ak8823 Datasheet - Page 2

• Manufacturer Part Number: ak8823
• Description: Hdtv & Ntsc/pal Multi-format Encoder Sdtv/hdtv X2 Oversampling 5ch Dacs
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
SD Side Input Video Port and HD Side Input Video Port are independently equipped.
525i / 625i signals on SD Input Port can be processed at HD Block ,or D1 signal on HD Input Port can be processed at SD Block.
(Note 1) in the Block diagram, denotes a clock to be used internally.
Either of the two Ports can be selected by register setting. A clock in the selected Port is used which is assigned by bit 7 VPRTSD of Video Process 4 Register at
address 0x14 for SD Block or bit 5 VPRT of HD DAC Control Register at address 0x05 for HD Block. Video Signal is processed in the same manner.
(Note 2) When video data on HD port is transferred to SD block, the same clock in CLK_HD pin must be fed to CLK_SD pin.
MS0549-E-02
HSYNC_HD
HSYNC_SD
VSYNC_SD
VSYNC_HD
CBCR7-0
ITU7-0
CLK_HD
CLK_SD
Y7-0
(Note2)
8
8
8
TEST
SD Port
HD Port
(4:2:2)
(4:2:2)
TEST1
Cb
Cb
Cr
Cr
Y
Y
TEST2
HD Block
(Note1)
SD Block
2
Insertion
AVDD
SYNC
(4:4:4 27MHz)
74.25MHz -> 148.5MHz
27MHz -> 54MHz
Cb
Cr
Y
Block Diagram
AVSS
(4:4:4)
Pb
PLL (x2)
Pr
Y
( Note1) CLK_SD or CLK_HD
74.25 -> 148.5MHz
27MHz -> 54MHz
(1080i/720p) x2
DVDD
(525i/625i) x2
O.S. Filter
NTSC/PAL
Encoder
DVSS
IVDD
10
54M/148.5MHz
I
2
C
Y
C
10
IVSS
27M
DAC2
DAC3
DAC4
DAC5
DAC6
IIC_VDD
SDY
SDC
BYPASS
VREF_SD
VREF_HD
IREF
FLT
HDY
HDPB
HDPR
INIT_N
SDA
SCL
SELA
PD_N
2006/10
[AK8823]