s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 346

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

DMA CONTROLLER
DMA TRANSFER TIMING DATA
Figure 9-8 provides detailed timing data for GDMA data transfers that are triggered by external DMA requests.
Please note that read/write timing depends on which memory banks are selected.
To access ROM banks, which is in multiplexing bus mode, by 4-data burst mode, refer to Figure A-1 and Figure
A-2 of appendix A for read/write timing of ROM bank 5.
9-10
(In_MCLK)
nXDREQ
nXDACK
SCLK
Figure 9-8. External DMA Requests Detailed Timing (S3C4510X)
tEMRs
tEMRS
tEMRh
tEMAf
tEMAr
tEMRh
setup time
hold time
(falling)
(rising)
delay
delay
Min.3 cycles
9.55 ns
9.30 ns
worst
tEMAf
3.90 ns
0 ns
23.30 ns
22.70 ns
best
tEMAr
S3C4510B