Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Technical Manual page 452

V DMA BLOCK: HSDMA (High-Speed DMA)
Single-address mode
(1) SRAM
Example: When 2 (RD)/1 (WR) wait cycles are inserted
BCLK
A[23:0]
#CExx
#RD
#WRH/#WRL
#DMAACK
#DMAEND
(2) Burst ROM
Example: When 4-consecutive-burst and 2-wait cycles are set during the first access
BCLK
A[23:2]
A[1:0]
#CE10(9)
D[15:0]
#RD
#DMAACK
#DMAEND
Figure 2.9 #DMAACK/#DMAEND Signal Output Timing (Burst ROM)
(3) DRAM
Example: Page mode, RAS: 1 cycle; CAS: 2 cycles; Precharge: 1 cycle
BCLK
ROW
A[11:0]
#RASx
#HCAS/
#LCAS
#RD
#WR
#DMAACK
#DMAEND
Note: The single-address transfer method does not allow data transfer to/from the SDRAM.
B-V-2-14
Figure 2.8 #DMAACK/#DMAEND Signal Output Timing (SRAM)
"00"
COL #1
Figure 2.10 #DMAACK/#DMAEND Signal Output Timing (DRAM)
addr
addr[23:2]
"01"
COL #2
EPSON
"10" "11"
S1C33L03 FUNCTION PART