分辨率与时钟频率计算

2024-4-30 16:51| 发布者: 这是YHM| 查看: 2098| 评论: 0

类目: T113i系列产品  >  硬件     文档编号: 1391

CLK: pixel clock(像素频率) 计算方法如下:

以1920x1080p/60hz为例,total pixel:2200,total line:1125,filed rate:60Hz,那么:PCLK = 2200*1125*60 = 148.5MHz;

1280x720p/60hz为例,total pixel:1650,total line:750,filed rate:60Hz,那么:PCLK = 1650*751*60 = 74.25MHz;

3840x2160p/60hz YCC444为例,total pixel:4400,total line:2250,filed rate:60Hz,那么:PCLK = 4400*2250*60 = 594MHz;

1920x1080p/60hz:total pixel:2200,total line:1125,filed rate:60Hz. PCLK = 2200 * 1125 * 60 = 148.5MHz;

148.5MHz X 3 =445.5Mhz

148.5MHz X 4 =594Mhz

148.5MHz X 5 =742.5Mhz

148.5MHz X 6 = 891Mhz

PS:分辨率的实际的宽度和高度的像素:

real width pixel:width/0.872727272727273

real height pixel:height/0.96

比如:

 1920*1080

 real width pixel:1920/0.872727272727273 = 2200

 real height pixel:1080/0.96 = 1125

HDMI为例

PCLK:像素时钟

以1920x1080p/60hz为例:1920108060=124.4MHz


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