YGV628B
AVDP7
Advanced Video Display Processor 7
■
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.
Moreover, AVDP7 is supports to the resolution up to SVGA, and it is possible to apply to the various digital
equipments only by connecting one SDRAM to an external memory as a frame memory.
■
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.
YGV628B CATALOG
CATALOG No.: LSI-4GV628B20
2005.7
YGV628B
□
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)
-2-
YGV628B
■
Block Diagram
Video Input I/F
DRI[5:0]
DGI[5:0]
DBI[5:0]
HSIN_N
VSIN_N
GCK1IN
GCK2IN
To Clock Gen.
To CRTC
Video Input Interface
Monitor I/F
R, G, B
DRO5-0
DGO5-0
DBO5-0
DBO5
Video Capture Controller
Data
FORMAT
CONV.
PRIORITY
ENC.
Alpha
Blending
Video Memory I/F
SDQ[15:0]
SA[13:0]
SCS_N
RAS_N
CAS_N
WE_N
UDQM
LDQM
SDCKOUT
Data
FORMAT
CONV.
DAC
IREF
CSYNC_N
VSYNC
VSYNC_N
_N
BLANK_N
GCK1OUT
GCK2OUT
DAC
Bitmap
FIFO
Data
FORMAT
CONV.
FILTER
DAC
Video Memory Interface
CPU I/F
D[15:0]
A[23:1]
CS_N
WRH_N
WRL_N
RD_N
WAIT_N
READY_N
INT_N
DREQ_N
RESET_N
DMA
Control
Registers
Registers
Clock
CRTC
Clock Gen.
Color Palette
To blocks
To all blocks
SYCKIN
CPU Interface
■
Examples of System Composition
Independent (self-propelled)
system
RAM
CPU
Dot clock
ROM
AVDP7
SDRAM
Analog RGB
Digital RGB
CRT
LCD
Encoder
Example of OSD to Digital Image (CPU, SDRAM, etc. are omitted)
Composite
External Image
[16bitYCrCb]
[ITU656]
AVDP7
Image + OSD
[16bitYCrCb]
[ITU656]
DAC NTSC Encoder
Separate
Component
-3-
YGV628B
Example of OSD to Analog Image (CPU, SDRAM, etc. are omitted)
13.5MHz
AVDP7
YS_N
HSYNC,VSYNC
Analog Image
[Analog RGB]
Analog
Switch
Analog Image
Example of application to liquid crystal television (CPU, SDRAM, etc. are omitted)
External Image
[NTSC]
NTSC
Decoder
External Image
[16bitYCrCb]
AVDP7
Image + OSD
[18bitRGB]
LCD
e.g.)
640x480
Capture + Interlace Progressive Conversion
Example of application to
on-board
multi-vision (CPU, SDRAM, etc. are omitted)
TV External Image
[18bitRGB]
[16bitYcrCb]
[ITU656]
AVDP7
Image + OSD
[18bitRGB]
LCD
e.g.)
800x480
Capture + Resolution Conversion
・
・
・
・
e.g.)
720x480/2 [4:3]
720x360/2 [16:9]
720x346/2 [1.85:1]
720x270/2 [2.35:1]
[ ]= aspect ratio
800x480
-4-
YGV628B
Example of application to digital image equipment (CPU, SDRAM, etc. are omitted)
AVDP7
[ITU656]
Analog Image
NTSC
Decoder
Image+OSD
[ITU656]
CRT / LCD
Digital Image
MPEG
Decoder
Image through
[ITU656]
[ITU656]
Aux. Video
Example of application to digital recording equipment (CPU, SDRAM, etc. are omitted)
Broadcasting Image
[ITU656]
AVDP7
Image + OSD
[ITU656]
CRT / LCD
Recorded Image
[ITU656]
Recording
System
Image through
[ITU656]
MPEG
Decoder
MPEG
Encoder
-5-
京公网安备 11010802033920号
EEWORLD
