MC68HC08XL36 Datasheet, PDF (121/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

15-dma_b
MOTOROLA
Freescale Semiconductor, Inc.
Direct Memory Access Module (DMA)
Functional Description
15
0
CHANNEL x SOURCE BASE ADDRESS
SOURCE ADDRESS
15
0
CHANNEL x DESTINATION BASE ADDRESS
–
7
0
CHANNEL x BYTE COUNT
+1
DESTINATION ADDRESS
7
0
CHANNEL x CONTROL
7
0
CHANNEL x BLOCK LENGTH
NOTE:
=?
When byte count = block length, the CPU
interrupt flag (IFCx) is set and the byte count
is reset.
If in loop mode (Lx = 1), leave TECx set.
If in finite transfer mode (Lx = 0), clear TECx.
Figure 7. Static Source and Decremented Destination
15
0
CHANNEL x SOURCE BASE ADDRESS
15
0
CHANNEL x DESTINATION BASE ADDRESS
–
SOURCE ADDRESS
DESTINATION ADDRESS
7
0
CHANNEL x BYTE COUNT
+1
7
0
CHANNEL x CONTROL
7
0
CHANNEL x BLOCK LENGTH
NOTE:
=?
When byte count = block length, the CPU
interrupt flag (IFCx) is set and the byte count
is reset.
If in loop mode (Lx = 1), leave TECx set.
If in finite transfer mode (Lx = 0), clear TECx.
Figure 8. Decremented Source and Static Destination
Direct Memory Access Module (DMA)
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MC68HC08XL36
121