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chumbyhackerboard:vga [2010/09/21 05:31] ladyada |
chumbyhackerboard:vga [2016/01/28 18:05] (current) |
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* VSYNC_ONLY = 1 (?) | * VSYNC_ONLY = 1 (?) | ||
* HORIZONTAL_WAIT_CNT = 48 (h back porch) + 96 (sync pulse) = 0xDE and then | * HORIZONTAL_WAIT_CNT = 48 (h back porch) + 96 (sync pulse) = 0xDE and then | ||
- | * VERTICAL_WAIT_CNT = 31 (v back porch) = 0x1F | + | * VERTICAL_WAIT_CNT = 31 (v back porch) + 2 (sync pulse) = 0x21 |
- | -> 0x00DE001F | + | -> 0x00DE0021 |
====== HW_LCDIF_TRANSFER_COUNT ====== | ====== HW_LCDIF_TRANSFER_COUNT ====== | ||
Line 96: | Line 96: | ||
Hsync negative pulse = 3.83 uS (should be 3.81) | Hsync negative pulse = 3.83 uS (should be 3.81) | ||
+ | |||
+ | HSync Back porch = 5 uS (should be 1.9?), Hsync front porch = ~14.2uS (should be 0.9?) |