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HSMMC CONTROLLER
S3C2416X RISC MICROPROCESSOR
20-18
5.2 SDMA SYSTEM ADDRESS REGISTER
Register
Address
R/W
Description
Reset Value
SYSAD0 0X4AC00000
R/W
System
Address register (Channel 0)
0x0
SYSAD1 0X4A800000
R/W
System
Address register (Channel 1)
0x0
This register contains the physical system memory address used for DMA transfers.
Name
Bit
Description
Initial Value
SYSAD [31:0]
SDMA System Address
This register contains the system memory address for a DMA transfer.
When the Host Controller stops a DMA transfer, this register shall point to
the system address of the next contiguous data position. It can be accessed
only if no transaction is executing (i.e., after a transaction has stopped).
Read operations during transfers may return an invalid value.
The Host Driver shall initialize this register before starting a DMA
transaction. After DMA has stopped, the next system address of the next
contiguous data position can be read from this register.
The DMA transfer waits at the every boundary specified by the
Host SDMA
Buffer Boundary
in the
Block Size
register. The Host Controller generates
DMA Interrupt
to request the Host Driver to update this register. The Host
Driver set the next system address of the next data position to this register.
When the most upper byte of this register (003h) is written, the Host
Controller restarts the DMA transfer. When restarting DMA by the Resume
command or by setting
Continue Request
in the
Block Gap Control
register, the Host Controller shall start at the next
contiguous address stored here in the
System Address
register.
0x00
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 ...