STMicroelectronics STM32F429 Reference Manual

LCD-TFT Controller (LTDC) RM0090
492/1731 DocID018909 Rev 11
16.7.3 LTDC Active Width Configuration Register (LTDC_AWCR)
This register defines the accumulated number of Horizontal Synchronization, back porch
and Active pixels minus 1 (HSYNC width + HBP + Active Width - 1) and the accumulated
number of Vertical Synchronization, back porch lines and Active lines minus 1 (VSYNC
Height+ BVBP + Active Height - 1). Refer to Figure 82 and Section 16.4: LTDC
programmable parameters for an example of configuration.
Address offset: 0x10
Reset value: 0x0000 0000
Bits 31:28 Reserved, must be kept at reset value
Bits 27:16 AHBP[11:0]: Accumulated Horizontal back porch (in units of pixel clock period)
These bits define the Accumulated Horizontal back porch width which includes the
Horizontal Synchronization and Horizontal back porch pixels minus 1.
The Horizontal back porch is the period between Horizontal Synchronization going
inactive and the start of the active display part of the next scan line.
Bits 15:11 Reserved, must be kept at reset value
Bits 10:0 AVBP[10:0]: Accumulated Vertical back porch (in units of horizontal scan line)
These bits define the accumulated Vertical back porch width which includes the Vertical
Synchronization and Vertical back porch lines minus 1.
The Vertical back porch is the number of horizontal scan lines at a start of frame to the
start of the first active scan line of the next frame.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
AAW[11:0]
rw 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
AAH[10:0]
rw rw rw rw rw rw rw rw rw rw rw
Bits 31:28 Reserved, must be kept at reset value
Bits 27:16 AAW[11:0]: Accumulated Active Width (in units of pixel clock period)
These bits define the Accumulated Active Width which includes the Horizontal
Synchronization, Horizontal back porch and Active pixels minus 1.
The Active Width is the number of pixels in active display area of the panel scan line. The
maximum Active Width supported is 0x400.
Bits 15:11 Reserved, must be kept at reset value
Bits 10:0 AAH[10:0]: Accumulated Active Height (in units of horizontal scan line)
These bits define the Accumulated Height which includes the Vertical Synchronization,
Vertical back porch and the Active Height lines minus 1. The Active Height is the number
of active lines in the panel. The maximum Active Height supported is 0x300.

STMicroelectronics STM32F429 Specifications

General

Brand	STMicroelectronics
Model	STM32F429
Category	Controller
Language	English