mcf5307cft90b Freescale Semiconductor, Inc, mcf5307cft90b Datasheet - Page 294

• Manufacturer Part Number: mcf5307cft90b
• Description: Mcf5307 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

DMA Controller Module Functional Description
Figure 12-13 shows a single-address DMA transfer in which the peripheral is reading from
memory. Note that TM2 is high, indicating a single-address transfer. Note that DREQ is
negated in clock 4, before the assertion of TS in clock 6.
12-16
Figure 12-12. Dual-Address, Peripheral-to-SDRAM, Lower-Priority DMA Transfer
RAS[1:0]
CAS[3:0]
DRAMW
SIZ[1:0]
DREQ0
D[31:0]
A[31:0]
TT[1:0]
CLKIN
SRAS
SCAS
TM2
TM0
R/W
CSx
TIP
AS
TS
TA
0
CPU
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MCF5307 User’s Manual
DMA Read
1
0
CPU
1
DMA Write
0
Precharge
CPU