ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 36

• Manufacturer Part Number: ak8825
• Description: Hd/sd Multi Format Video Encoder With 3ch Dac
• Manufacturer: AKM Semiconductor, Inc.

(2) YCbCr 16bit Data Input Format
(R/W) [Sub Address 0x00] or SD Block Control Register (R/W) [Sub Address 0x11]
Rev-E-00
(27 or 74.25MHz)
(2-2) 525P / 625P / 1080i / 720P Data input
In case of 525i / 625i / 525P / 625P / 1080i / 720P Data input, this format is used.
The relation between input data format and Input clock rate to CLKIN pin are relation as follows,
DATA15-DATA0 pins are used as Data Input pins.
Yn / Cbn / Crn means Y[n] / Cb[n] / Cr[n] in following table.
D17 - D0 corresponds to DATA17 - DATA0 pins
The Register setting is defined as following table.
[I/O Data Fromat Register] Setting
Output signal is set CONVMOD[1:0]-bit of I/O Data Format Register (R/W) [Sub Address 0x0B] and HD Mode Register
(2-1) 525i / 625i Data input
D17
Data[15:8]
-
Data[15:8]
Data[7:0]
(27MHz)
Data[7:0]
INPFMT[1:0]-bit
CLKIN
D16
CLKIN
525i / 625i / 525p / 625p : 27MHz
1080i / 720p / : 74.25MHz
-
01
D15
Cb7
Cr7
Cb
Y
0
0
Cb
Y
D14
Cb6
Cr6
0
0
Cr
Y
1
0
Cb
D13
Cb5
Cr5
Y
2
1
Cr
Y
DTFMT-bit
1
0
Cr
Y
3
D12
Cb4
Cr4
1
0
･･･
Cb
2
Cb
Y
D11
Cb3
Cr3
2
1
･･･
Cr
2
D10
Cb2
･･･
･･･
Cr2
16bit YCbCr Data Input
Cr
Y
Fig. 26
Fig. 27
3
36
1
･･･
･･･
Cb1
Cr1
D9
Note
Cb
Y
2n
n
･･･
･･･
Cb0
Cr0
D8
Y
Cr
2n+1
n
Cb
Y
D7
Y7
2n+2
n+1
Cb
Y
2n
Y
Cr
n
D6
Y6
2n+3
n+1
Cb
Y
D5
2n+4
Y5
n+2
Y
Cr
2n+1
Y
n
Cr
2n+5
D4
Y4
n+2
･･･
･･･
Cb
D3
Y3
Y
n+1
2n+2
･･･ ･･･
･･･ ･･･
D2
Y2
2008/03
[AK8825]
･･･
･･･
D1
Y1
D0
Y0