參數(shù)資料
型號: BT458LPJ80
英文描述: Video DAC with Color Palette (RAMDAC)
中文描述: 視頻DAC的調色板(的RAMDAC)
文件頁數(shù): 5/60頁
文件大小: 647K
代理商: BT458LPJ80
Bt457/Bt458
List of Figures
125 MHz/135 MHz/165 MHz Monolithic CMOS 256 Color Palette RAMDAC
L45801 Rev. N
Conexant
v
List of Figures
Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 3-1.
Figure 3-2.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Bt457/Bt458 84-Pin J-Lead Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Bt457/Bt458 84-Pin PGA Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Video Input/Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Composite Video Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Sample Layout Showing Power and Ground Plane Isolation Gaps . . . . . . . . . . . . . . . . . . . 3-2
Typical Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Generating the Bt458 Clock Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Generating the Bt457 Signals (Monochrome Application). . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Generating the Bt457 Clock Signals (Color Application) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Video Input/Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
MPU Read/Write Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
84-Pin Plastic J-Lead (PLCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
84-Pin Ceramic PGA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
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