ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 37

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

(3) RGB 8bit Data Input Format (RGB5:6:5)
Clock rate to CLKIN pin is 27MHz.
DATA7-DATA0 pins are used as Data Input pins. Input data format is RG[7:0] / GB[7:0] shown as following table.
(R/W) [Sub Address 0x00] or SD Block Control Register (R/W) [Sub Address 0x11]
Rev-E-00
In case of to encode NTSC/PAL composite Video signal or YPbPr component Video signal from RGB data, this mode is used.
D17 - D0 corresponds to DATA17 - DATA0 pins
RG Data = [ R4, R3, R2, R1, R0, G5, G4, G3 ]
GB Data = [ G2, G1, G0, B4, B3, B2, B1, B0 ]
The Register setting is defined as following table.
Output signal is set CONVMOD[1:0]-bit of I/O Data Format Register (R/W) [Sub Address 0x0B] and HD Mode Register
D17
-
[I/O Data Fromat Register] Setting
DATA[7:0]
(27MHz)
INPFMT[1:0]-bit
CLKIN
D16
-
00
D15
-
RG0 GB0
D14
-
RG1
D13
-
DTFMT-bit
GB1
D12
-
1
…
D11
-
…
D10
-
RG
n
8bit RGB Data Input
D9
-
Fig. 28
GB
37
n
RG
D8
-
Note
n+1
GB
D7
R4
G2
n+1
･･･ ･･･ ･･･ ･･･ ･･･
D6
R3
G1
D5
R2
G0
D4
R1
B4
D3
R0
B3
D2
G5
B2
･･･ ･･･
D1
G4
B1
2008/03
[AK8825]
D0
G3
B0