s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 246

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

DMA
EXAMPLES
Single service in Demand Mode with Unit Transfer Size
The assertion of XnXDREQ is need for every unit transfer (Single service mode). The operation continues while the
XnXDREQ is asserted (Demand mode), and one pair of Read and Write (Single transfer size) is performed.
Single service in Handshake Mode with Unit Transfer Size
Whole service in Handshake Mode with Unit Transfer Size
8-6
XnXDREQ
XnXDACK
XnXDREQ
XnXDACK
XnXDREQ
XnXDACK
XSCLK
XSCLK
XSCLK
Double synch
Double synch
Double synch
Figure 8-5. Single service in Handshake Mode with Unit Transfer Size
Figure 8-6. Whole service in Handshake Mode with Unit Transfer Size
Figure 8-4. Single service in Demand Mode with Unit Transfer Size
3 cycles
Read
Write
Read
Read
Write
Write
2 cycles
2 cycles
Read
Read
Write
Write
2 cycles
Read
Read Write
Write
S3C2410A