1. LCD-TFT控制器的主要特性
• 24-bit RGB Parallel Pixel Output; 8 bits-per-pixel (RGB888)
• 2 display layers with dedicated FIFO (64x32-bit)
• Color Look-Up Table (CLUT) up to 256 color (256x24-bit) per layer
• Supports up to SVGA (800x600) resolution
• Programmable timings for different display panels
• Programmable Background color
• Programmable polarity for HSync, VSync and Data Enable
• Up to 8 Input color formats selectable per layer
–ARGB8888
– RGB888
– RGB565
–ARGB1555
–ARGB4444
– L8 (8-bit Luminance or CLUT)
– AL44 (4-bit alpha + 4-bit luminance)
– AL88 (8-bit alpha + 8-bit luminance)
• Pseudo-random dithering output for low bits per channel
– Dither width 2-bits for Red, Green, Blue
• Flexible blending between two layers using alpha value (per pixel or constant)
• Color Keying (transparency color)
• Programmable Window position and size
• Supports thin film transistor (TFT) color displays
• AHB master interface with burst of 16 words
• Up to 4 programmable interrupt events 2. LCD控制器的引脚和信号接口
这里有一个功能要着重的说一下:
Pseudo-random dithering output for low bits per channel
– Dither width 2-bits for Red, Green, Blue
这个是什么意思呢,意思就是说:比如你要用这个24位的数据接口来接18位的显示屏来如何的连接呢,
就是用显示屏的R[5;0], G[5:0], B[5:0]接LCD控制器的R[7;2], G[7:2], B[7:2]。官方的F429探索套件用的
ili9341就是这个接法。