Asahi Kasei Microdevices AK8818
AK8818 is different pin assignment from AK8817. When to input 601 data : 27 MHz. When to input square pixel data : 24.5454 MHz ( NTSC )/ 29.50 MHz ( PAL ) Internal clock is inverted (internal operation timing edge is inverted.) Connect to either PVDD or PVSS(DGND).GENERAL DESCRIPTION
The AK8817 is a Digital Video Encoder for Portable and Mobile application. ITU-R BT.601 level compatible Y, Cb,and Cr signals which correspond to 27MHz or square pixel are encoded into either NTSC or PAL compatible composite video signal. Interface is made in HSYNC-, VSYNC- synchronized slave-mode operation or ITU-R.Bt656. AK8817 has 75ohm driver with LPF. It is possible to encode the VBID(CGMS-A) and WSS signal on the output video signal. Host Control interface is I2C Bus I/F.FEATURES
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● NTSC-M, PAL-B, D, G, H, I Composite Video encoding Y:Cb:Cr 4:2:2 H/V Slave Operation / ITU-R.BT656 Interface Y filtering: 2 x over-sampling C filtering: 4 x over-sampling 9bit DAC Setup Macrovision Rev.7.1.1L VBID ( CGMS-A ) Compatible WSS Compatible Operation Clock rate : 27MHz or Square-pixel Clock rate(NTSC:24.5454MHz/PAL29.50MHz) Video Amp with LPF On-chip Color Bar Output Black Burst Output Power Supply (AVDD, DVDD) 2.7V - 3.3V I/F Power Sup...