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S3C2416X RISC MICROPROCESSOR
DMA CONTROLLER
8-13
DCONn
Bit
Description
Initial State
transfer (single or burst of length four) DMA stops and waits for
another DMA request.
1 = Whole service mode is selected in which one request gets
atomic transfers to be repeated until the transfer count reaches to
0. In this mode, additional request is not required. Here, note that
even in the whole service mode, DMA releases the bus after each
atomic transfer and then tries to re-get the bus to prevent starving
of other bus masters.
Reserved [26:2
5]
Reserved for future use
00
PADDRFIX
[24] APB Address fix control
0 = Increment
1 = Fix
If you want to fix the APB address during burst operation, set this bit
to 1.
0
Reserved
[23] Reserved for future use
0
RELOAD
[22] Set the reload on/off option.
0 = Auto reload is performed when a current value of transfer count
becomes 0 (i.e., all the required transfers are performed).
1 = DMA channel (DMA REQ) is turned off when a current value of
transfer count becomes 0. The channel on/off bit(DMASKTRIGn[1])
is set to 0(DREQ off) to prevent unintended further start of new
DMA operation
0
DSZ [21:2
0]
Data size to be transferred.
00 = Byte
01 = Half word
10 = Word
11 = Reserved
00
TC
[19:0] Initial transfer count (or transfer beat).
Note that the actual number of bytes that are transferred is
computed by the following equation: DSZ x TSZ x TC, where DSZ,
TSZ, and TC represent data size (DCONn[21:20]), transfer size
(DCONn[28]), and initial transfer count, respectively.
This value will be loaded into CURR_TC only if the CURR_TC is 0
and the DMA ACK is 1.
00000
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...