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1.13. DMA Channel 1 Current Address Register

DMA channel 1 current address register (DCAR1) is a 32-bit read-only register that is used by DMA channel 1 to keep track of the address of the DMA transfer currently in progress, or the address of the next DMA transfer. Any time the LCD is enabled or the value in the current address pointer register equals the calculated end address value, the contents of the base address pointer register is transferred to the current address pointer. This register can be read to determine the approximate line that the LCD controller is currently processing and driving out to the display.

Note

DCAR1 is a read-only register that is not reset, and is not initialized until after the LCD is first enabled, causing the contents of the base address register to be transferred to it.

Figure 1.23. DMA channel 1 current address register DCAR1

Figure 1.23. DMA channel 1 current address register DCAR1
DMA channel 1 current address register DCAR1
BitNameDescription
31-0DCAR1DMA Channel 1 Current Address PointerRead-only register that continuously reflects the current address that DMA channel 1 istransferring from/to, or will use in the next transfer. Base address register is transferred tothis register whenever the LCD is first enabled (LcdEN=1).
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