■  Outline

YGV628B (hereafter called AVDP7) is the latest version of YAMAHA AVDP series which has many past successful records in various visual equipments, vehicle equipment, etc.

Three bit-map planes are equipped, and it can be displayed in piles to an external image; furthermore, AVDP7

has many functions as OSD (On Screen Display), such as α-blending, change of a display priority, etc. In addition, it has a digital image Input/Output function to allow an external image to be expanded or reduced.

■  Feature

□  OSD Function

●  The OSD images which is composed of plains in case of a digital image input is overlaid. 

     Simultaneous use of three plains is possible in AVDP7 at its maximum.

●  The natural picture display of 65536 colors by R5bit, G6bit, and B5bit. It is the palette color of 256 colors in 16777216 colors.

●  Supports 16bit YCrCb422 

●  16 gray-levels of α-blending in dot units

●  Conversion of display priority is possible

□  Display Resolution

●  Creation of the Display Timing of NTSC, PAL, QVGA, Wide QVGA, VGA, Wide VGA, and SVGA is possible.

●  Examples of Correspondence Resolution : 320×240, 400×240, 720×240, 640×480, 800×480, 800×600, etc..

●  Resolution Converting Function : Horizontal direction Æ1/2 times to 8192 times display Vertical direction Æ1/4 times to 8192 times display.

□  Digital Image Input/Output Function

●  Corresponding to 18bit RGB, 16bit YCrCb422, and ITU656.

●  By YS bit output, Mixing with an image signal are possible externally.

□  Analog Image Output Function

●  Analog RGB output which has 8 bits DAC for each R,G,B

●  By YS bit output, super-impose of image data is available from an outside.

□  Capture Function

●  The depiction from the external image input of 18bit RGB, 16bit YCrCb422, and ITU656 to frame memory is possible in real time.

●  When the digital image input is ITU656, it is possible to select from two systems of asynchronous input.

●  Pixel Skipping Functions of Horizontal direction and Vertical direction.

●  Interlace ÆProgressive Conversion Function

□  External Memory

●  Video Memory

-  16Mbit, 64Mbit, 128Mbit, and 256Mbit(x16) of SDRAM are connectable. However, only a half domain is possible to use at the time of 256Mbits of SDRAM is in use.

-  WRITE/READ access by the memory transfer function

-  The maximum operating frequency of SDRAM clock is 81MHz.

□  Others

●  High flexibility CPU I/F with 16bit CPU bus width and endian control are adopted.

●  Built-in register is directly mapped to the 256 Bytes of CPU memory space.

●  176 pin plastic LQFP   Pin lead coating is Pb free. (YGV628B-VZ)

●  Operating temperature: -40 degree to +85 degree.

●  CMOS, 3.3V unity voltage(5V tolerant)