YGV628B中文資料Yamaha數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)

■ 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 ?1/2 times to 8192 times display Vertical direction ?1/4 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 ?Progressive 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)