參數(shù)資料
型號: TP6508
英文描述: Pushbutton Switch; Actuator Diameter:0.078"; Circuitry:6PDT; Switch Operation:6 Changeover Push-Push; Contact Current Max:100mA; Leaded Process Compatible:Yes; Mounting Type:PCB; Switch Function:6PDT
中文描述: 顯卡
文件頁數(shù): 6/134頁
文件大?。?/td> 600K
代理商: TP6508
P.2
When the TP6508 is interfaced to a dual-scan mono STN LCD panel , an additional DRAM isn't
needed with the shadow frame buffer technology . This shadow frame buffer build in video memory
that is used by the chipset to accelerate panel refresh rate without using high frequency clocks , thus
reducing power, and allowing vertical refresh rates from 60 Hz to 160 Hz for improved contrast and
freedom from flicker.
The TP6508 serves as a DRAM controller for the display memory,it handle DRAM refresh,
display refresh, display memory access by CPU and supply the control signal of DRAM with dual-
write or dual-cas.
The TP6508 offers two types DRAM to make various memory configurations including of 512k
, 1024k , 2048k memory size for different market. TP6508 support 256k x 4-bit , or 256k x 16-bit
DRAM memory to simplify VGA system and implement high resolution display simultaneously. With
Random Memory Cycle allocation skill and the multiple level CPU write buffer, the TP6508 provide
better system performance and achieve zero wait state during memory write accesses.
When using DRAM 256kx16 by 1 or DRAM 256kx4 by 4, memory size is 512k byte and data
width is 16 bits. When using 256kx16 by 2 or 256kx4 by 8, memory size is 1M byte and data size is
32 bits. TP6508 can support the CRT display resolution up to 1024x768 256 color non-interlace,
800x600 hi-color,640x480 true color at 1M byte display memory. When using 256kx16 by 4 , memory
size is 2M byte and data size is 32 bits. All display-memory can be linear addressing.
The Video-in interface accept video signal from PC-video.
Providing the power sequential control for flat panel . FPVCC signal is applied to the digital
+5V voltage of flat panel, FPVEE signal is applied to the analog Driver's bias voltage of flat panel,
and FPBACK signal is applied to the Invertor for the backlight of flat panel, their on/off sequence is
programmable. Anotherway TP6508 providing intelligent control by timer to switch power mode
(On including Cover-close,standby,suspend,Off) to save the power of TP6508 and Display.
The TP6508 graphics chip has been designed to optimize cost/performance trade-off consider-
ations. The Video clock rate depends upon the mode used, and is up to 135 MHz. The Memory clock
input is optional and depends on the display DRAMs access-time . It can be up to 75 MHz.
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