MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 978
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MPC8544COMEDEV
Manufacturer Part Number
MPC8544COMEDEV
Description
KIT DEV EXPRESS MPC8544COM
Manufacturer
Freescale Semiconductor
Type
MPUr
Datasheets
1.MPC8544VTALF.pdf
(117 pages)
2.MPC8544VTALF.pdf
(2 pages)
3.MPC8544VTALF.pdf
(1340 pages)
Specifications of MPC8544COMEDEV
Contents
Board
For Use With/related Products
MPC8544
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 978 of 1340
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DMA Controller
Figure 16-25
16-36
Current list descriptor Address Register
describes the DMA transaction flow.
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
List Descriptor
List Descriptor
List Descriptor
Descriptors In Memory
Link Descriptor (EOLND/EOLSD)
Link Descriptor (EOLND)
Link Descriptor (EOLND)
.
.
.
.
Link Descriptor
.
Link Descriptor
Link Descriptor
.
.
Link Descriptor
Link Descriptor
Link Descriptor
Figure 16-25. DMA Transaction Flow with DMA Descriptors
DMA Controller Flow (Extended Mode)
MR n [CS] is set by software after programming
descriptors in memory
Fetch the first list descriptor using the CLSDAR n address
Write NLSDAR n , CLNDAR n
Fetch the first link descriptor
Write programming model registers
Begin DMA transfer using SAR n , SATR n , DAR n , DATR n
After transfer check if NLNDAR n [EOLND] is set
Move NLNDAR n to CLNDAR n
Fetch the current link descriptor
Write programming model registers
Begin DMA transfer using SAR n , SATR n , DAR n , DATR n
After DMA transfer check if NLNDAR n [EOLND] is set
Check if NLSDAR n [EOLSD] is set
Move NLSDAR n to CLSDAR n
Fetch the current list descriptor
Write NLSDAR n , CLNDAR n
Move NLNDAR n to CLNDAR n
Fetch the first link descriptor
Write programming model registers
Begin DMA transfer using SAR n , SATR n , DAR n , DATR n
After DMA transfer check if NLNDAR n [EOLND] is set
Move NLNDAR n to CLNDAR n
Fetch the current link descriptor
Write programming model registers
Begin DMA transfer using SAR n , SATR n , DAR n , DATR n
After DMA transfer check if NLNDAR n [EOLND] is set
Check if NLSDAR n [EOLSD] is set
Move NLSDAR n to CLSDAR n
Fetch the current list descriptor
Write NLSDAR n , CLNDAR n
Fetch the first link descriptor
Write programming model registers
Begin DMA transfer using SAR n , SATR n , DAR n , DATR n
After DMA transfer check if NLNDAR n [EOLND] is set
Move NLNDAR n to CLNDAR n
Fetch the current link descriptor
Write programming model registers
Begin DMA transfer using SAR n , SATR n , DAR n , DATR n
After DMA transfer check if NLNDAR n [EOLND] is set
Check if NLSDAR n [EOLSD] is set
Clear SR n [CB]
DMA Transfer Complete
Freescale Semiconductor
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