LCD-TFT controller (LTDC) RM0090
504/1749 RM0090 Rev 18
16.7.16 LTDC Layerx Window Vertical Position Configuration Register
(LTDC_LxWVPCR) (where x=1..2)
This register defines the vertical position (first and last line) of the layer1 or 2 window.
The first visible line of a frame is the programmed value of AVBP[10:0] bits + 1 in the
register LTDC_BPCR register.
The last visible line of a frame is the programmed value of AAH[10:0] bits in the
LTDC_AWCR register.
Address offset: 0x8C + 0x80 x (Layerx -1), Layerx = 1 or 2
Reset value: 0x0000 0000
Example:
The LTDC_BPCR register is configured to 0x000E0005 (AVBP[10:0] is 0x5) and the
LTDC_AWCR register is configured to 0x028E01E5 (AAH[10:0] is 0x1E5). To configure the
vertical position of a window size of 630x460, with vertical start offset of 8 lines in the Active
data area:
1. Layer window first line: WVSTPOS[10:0] should be programmed to 0xE (0x5 + 1 + 0x8)
2. Layer window last line: WVSPPOS[10:0] should be programmed to 0x1DA
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
WVSPPOS[10:0]
rw rw rw rw rw rw rw rw rw rw rw
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved
WVSTPOS[10:0]
rw rw rw rw rw rw rw rw rw rw rw
Bits 31:27 Reserved, must be kept at reset value
Bits 26:16 WVSPPOS[10:0]: Window Vertical Stop Position
These bits configures the last visible line of the layer window.
The following condition must be respected:
WHSPPOS[11:0] must be ≥ AVBP[10:0] bits + 1 (programmed in LTDC_BPCR
register)
Bits 15:11 Reserved, must be kept at reset value
Bits 10:0 WVSTPOS[10:0]: Window Vertical Start Position
These bits configure the first visible line of the layer window.
The following condition must be respected:
WHSTPOS[11:0] must be ≤ AAH[10:0] bits (programmed in the LTDC_AWCR register)
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