This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
chumbyhackerboard:vga [2010/09/21 05:28] ladyada |
chumbyhackerboard:vga [2016/01/28 18:05] (current) |
||
---|---|---|---|
Line 66: | Line 66: | ||
* MUX_SYNC_SIGNALS = 0 | * MUX_SYNC_SIGNALS = 0 | ||
* VSYNC_ONLY = 1 (?) | * VSYNC_ONLY = 1 (?) | ||
- | * HORIZONTAL_WAIT_CNT = 48 (h back porch)= 0x30 | + | * 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 |
- | -> 0x0030001F | + | -> 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?) |