Multi-buffer or circular buffer modes by linking multiple descriptors
Up to 12
channels
Enable 12 independent transfers
Automatic descriptor fetch for
each channel
Suspend/resume operation support
for each channel
Flexible arbitration scheme
4
configurable priority levels for each channel
Fixed or round-robin priority scheme within each priority level
From 1 to 256KB data transfer in a
single block transfer
Multiple addressing modes
Static
Configurable increment scheme
Optional interrupt generation
On block transfer complete
On error detection
On channel suspend
4 event
inputs
One event input for each of the
4 least significant DMA channels
Can be selected to trigger normal
transfers, periodic transfers or conditional transfers
Can be selected to suspend or
resume channel operation
4 event outputs
One output event for each of the
4 least significant DMA channels
Selectable generation on AHB,
block, or transaction transfer complete
Error management supported by write-back function
Dedicated Write-Back memory section for each channel to store ongoing descriptor transfer
CRC polynomial software selectable to
CRC-16 (CRC-CCITT)
CRC-32 (IEEE® 802.3)
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