MC68HC08XL36 Datasheet, PDF (110/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

DMA
Freescale Semiconductor, Inc.
7
0
CHANNEL 0
CHANNEL 1
CHANNEL 2
CHANNEL CONTROL
REGISTERS
7
0
CHANNEL 0
CHANNEL 1
CHANNEL 2
BLOCK LENGTH
REGISTERS
7
0
CHANNEL 0
CHANNEL 1
CHANNEL 2
BYTE COUNT
REGISTERS
15
0
CHANNEL 0
CHANNEL 1
CHANNEL 2
DESTINATION ADDRESS
REGISTERS
15
0
CHANNEL 0
CHANNEL 1
CHANNEL 2
SOURCE ADDRESS
REGISTERS
INTERNAL BUS
SYSTEM
CONTROL
LOGIC
CPU
INTERRUPT
REQUEST
ALU
= BUS SWITCH
Figure 1. DMA Module Block Diagram
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Read:
DMA Channel 0 Source Address
Register High (D0SH)
Write:
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
Reset:
Indeterminate after Reset
Read:
DMA Channel 0 Source Address
Register Low (D0SL)
Write:
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
Reset:
Indeterminate after Reset
Read:
DMA Channel 0 Destination
Address Register High (D0DH)
Write:
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
Reset:
Indeterminate after Reset
Read:
DMA Channel 0 Destination
Address Register Low (D0DL)
Write:
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
Reset:
Indeterminate after Reset
Figure 2. I/O Register Summary
MC68HC08XL36
110
Direct Memory Access Module (DMA)
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4-dma_b
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