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UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
381 of 1269
NXP Semiconductors
UM10503
Chapter 18: LPC43xx Serial GPIO (SGPIO)
Data is captured at a falling PIXCLK when HSYNC is low. At a POS interrupt 32 data
words are read from REG_SS and written to the data SRAM. Then SGPIO15 is toggled to
request a GP-DMA transfer of 32 words from the data SRAM to the final destination.
When DIN per line (or frame) is not a multiple of 32 data words then software should read
at the end of a line (or frame) the POS counter to determine whether all data has been
captured in REG.