Texas Instruments TMS320F2837 D Series Workshop Guide And Lab Manual

Direct Memory Access (DMA)
TMS320F2837xD Microcontroller Workshop - Direct Memory Access 8 - 5
Basic Address Control Registers
SRC_ADDR
SRC_ADDR_SHADOW
DST_ADDR
DST_ADDR_SHADOW
SRC_BURST_STEP
SRC_TRANSFER_STEP
DST_BURST_STEP
DST_TRANSFER_STEP
Active pointers
Pointer shadow registers
copied to active pointers at
start of transfer
Signed value added to active
pointer after each word
Signed value added to active
pointer after each burst
32
Simplified State Machine Example
3 words/burst
2 bursts/transfer
Read/Write Data
Add Burst Step
to Address
Pointer
Add Transfer
Step to Address
Pointer
Moved
“Burst Size”
Words?
Moved
“Transfer Size”
Bursts?
Y
Y
N
N
Wait for event
to start/continue
transfer
Start Transfer
End Transfer

Texas Instruments TMS320F2837 D Series Specifications

General

Brand	Texas Instruments
Model	TMS320F2837 D Series
Category	Microcontrollers
Language	English