YGV627 Datasheet, PDF (3/16 Pages) YAMAHA CORPORATION – AVDP3E - Advanced Video Display processor 3 Enhanced

YGV627
s BLOCK DIAGRAM
YGV627
CPU ¹⁶
Digital video
input
CPU
Interface
Sync.
control
PLL
Drawing
command
Display
control
Memory
control
OSD screen
Screen
synthesis
DAC
16
SDRAM
16Mbit
Analog
RGB
TFT
Panel
Digital video output
(Also used as digital video
input pin)
YGV627 is connected to the external memory bus of CPU as an external I/O device. As a video memory, SDRAM of up
to 64M bits can be connected to local memory bus of YGV627 to send bitmap image data stored in the video memory into
monitor as RGB signal in accordance with display scan timing.
YGV627 stores image data from CPU to the video memory by accessing video memory directly through CPU interface
or by accessing the video memory using internal drawing command that transfers the data by block.
YGV627 has a function that synthesizes external images with bitmap image of YGV627 on the screen by synchronizing
the scan timing of YGV627 with display timing of external video signals.
3