VP5311CG

·  Converts Y, Cr, Cb data to analog composite video and S-video
·  Supports CCIR recommendations 601 and 656
·  All digital video encoding
·  Selectable master/slave mode for sync signals
·  Switchable chrominance and luma bandwidth
·  Switchable pedestal with gain compensation
·  SMPTE 170M NTSC or CCIR 624 PAL compatible outputs
·  GENLOCK mode
·  Line 21 Closed Caption encoding
·  I2C bus serial microprocessor interface
·  VP5311C supports Macrovision V7.01anti-taping format

The VP5311C/VP5511C converts digital Y, Cr, Cb, data into analog NTSC/PAL composite video and S-video signals. The outputs are capable of driving doubly terminated 75 ohm loads with standard video levels.

The VP5311C/VP5511C  device accepts data inputs complying with CCIR Recommendation 601 and 656. The data is time multiplexed on an 8 bit bus at 27MHz and is formatted as Cb, Y, Cr, Y (i.e. 4:2:2). The video blanking and sync information from REC 656 is included in the data stream when the VP5311C/ VP5511C is working in slave mode.

The output pixel rate of VP5311C/VP5511C  is 27MHz and the input pixel rate is half this frequency, i.e. 13.5MHz.

All necessary synchronisation signals of VP5311C/VP5511C  are generated internally when the device is operating in master mode. In slave mode the device will lock to the TRS codes or the HS and VS inputs.

The rise and fall times of sync, burst envelope and video blanking are internally controlled to be within composite video specifications. Three digital to analog converters (DACs) are used to convert the digital luminance, chrominance and composite data into true analog signals. An internally generated reference voltage of VP5311C/VP5511C provides the biasing for the DACs.