参数资料
型号: BT497AKHF160
厂商: CONEXANT SYSTEMS
元件分类: 显示控制器
英文描述: 1280 X 1024 PIXELS PALETTE-DAC DSPL CTLR, PQFP160
封装: PLASTIC, QFP-160
文件页数: 7/141页
文件大小: 1512K
代理商: BT497AKHF160
4.0 Application Information
L498A_B
4.6 Initializing the Bt497A/8A
240 MHz Monolithic CMOS Triple 1K x 8 RAMDAC
4-10
Conexant
L498A_B
Preliminary Information/Conexant Proprietary and Confidential
1280 x 1024 x 76 Hz Noninterlaced Display
See Table 4-5 for noninterlaced register values.
Horizontal Pixels: 1280
Vertical Lines: 1024
Horizontal Frequency: 81.13 kHz
Horizontal Sync: 0.474
s
Horizontal Unblanked: 9.48
s
Horizontal Blanking: 2.84
s
Total Vertical Lines: 1066
Vertical Frequency: 76.11 Hz
Vertical Sync: 8 Lines
Pixel Clock: 135 MHz
Crystal: 13.5 MHz
Frame Buffer Pipeline: 1 serial clock cycle
NTSC Interlaced Display
See Table 4-6 for NTSC register values.
Horizontal Pixels: 640
Vertical Lines: 480
Horizontal Frequency: 15.73 kHz
Horizontal Sync: 4.73
s
Horizontal Unblanked: 52.15
s
Horizontal Blanking: 11.41
s
Total Vertical Lines: 525
Vertical Frequency: 59.94 Hz
Vertical Sync: 3 Lines
Equal. Pulses: 6 Pre and Post
12 full lines after equal before 1st line of active video for field 0.
Pixel Clock: 12.273 MHz
Crystal: 13.5 MHz
PLL Control Register
PLL: Enable
M = 80
N = 11
L = 8
Pixel Format Control Register
Pixel Format: 4/2:1 or 2:1
Timing Generation Control Register
EQUAL*: Enabled
Interlaced mode: Enabled
VSYNC*: Enabled
HSYNC*: Enabled
Frame Buffer Pipeline: 1 serial clock cycle
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