AK8825 Datasheet, PDF (1/162 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

[AK8825]
AK8825
HD/SD Multi Format Video Encoder with 3ch DAC
General Description
The AK8825 is a HD/SD TV Video Encoder with onchip 3-channel 10bit DAC.
As input data, in SDTV encoder mode, SMTE-125M / ITUR-R.BT601, 656 compatible Y/Cb/Cr 4:2:2 formats (8bit) are
accepted and in HDTV encoder mode, SMPTE-274M (1080i), SMPTE296M (720p) compatible Y/Cb/Cr 4:2:2 formats (8bit x 2)
are accepted.
As input data capture method, either a Synchronous mode to be made by detecting encoded EAV signal or a mode to
synchronize with externally-fed H/V SYNC signal is selectable.
Outputs of CVBS / SDY / SDC and HDY / HDPB / HDPR and R / G / B analog signal can be output exclusively.
VBI signal and Macrovision signal can be also superimposed on output in addition to Video signals by register setting.
AK8825 supports I2C compatible interface as Micro-Processor interface.
Features
Component Video Encoder
- Compatible Input Data
SMPTE125M-1995 / ITU-R BT601 (525i/625i)
SMPTE293M-1996 / ITU-R BT1358 (525p/625p)
SMPTE274M-1998 (1080i)
SMPTE296M-2001 (720p)
- Input Signal Format (525i / 625i, 525p / 625p, 1080i, 720P)
Y/Cb/Cr 4:2:2 (8bit x 1: 525i/625i)
Y/Cb/Cr 4:2:2 (8bit x 2: 525p/625p/1080i/720p)
RGB 6:6:6
RGB 5:6:5
- Input Clock
27MHz (525i / 625i / 525p / 625p) / 74.25MHz (1080i/720p)
- Output Signals
Y/Pb/Pr Interlace
Y/Pb/Pr Progressive
(EIA 770.2, EAI 770.3)
- Input Signal Synchronization
ITU-R.BT 656 I/F (EAV Decode)
Slave operation by HSYNC / VSYNC
(525i: ITU-R. BT601 Compatible 625i / 525p / 625p / 1080i / 720p; CEA-861-D Compatible)
- VBID (CGMS-A), CC/XDS, WSS, CEA-805-B (Type A/B)
- Macrovision 525i / 625i Rev.7.1.1L, 525p/625p Macrovision Progressive 1.2
- Internal Color bar Generator
- Internal Black Burst Generator
- Adjustable Y / Pb / Pr Delay Function
NTSC / PAL Composite Video Encoder
- NTSC-M, PAL-B, D, G, H, I. M, N Encoding
- Composite Video Output / S-Video Output
- Compatible Input Data
SMPTE125M-1995 / ITU-R BT601(525i/625i) Y/Cb/Cr 4:2:2 (8bit x 1)
RGB 6:6:6
RGB 5:6:5
- Input Signal Synchronization
ITU-R.BT 656 I/F (EAV Decode)
Slave operation by HSYNC / VSYNC
( 525i / 625i: ITU-R. BT601 Compatible)
- Input Clock
27MHz
- VBID(CGMS-A), CC/XDS, WSS
- Macrovision Rev. 7.1.L
Rev-E-00
1
2008/03