s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 245

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

S3C2410A
DMA
Transfer Size
— There are two different transfer sizes; unit and Burst 4.
— DMA holds the bus firmly during the transfer of the chunk of data. Thus, other bus masters cannot get the bus.
Burst 4 Transfer Size
Four sequential Reads and Writes are performed respectively in the Burst 4 Transfer.
NOTE
Unit Transfer size: One read and one write are performed.
XSCLK
XnXDREQ
XnXDACK
3 cycles
Double synch
Read
Read
Read
Read
Write
Write
Write
Write
Figure 8-3. Burst 4 Transfer Size
8-5