Datasheet

357
32072H–AVR32–10/2012
AT32UC3A3
19.12.5 Control Register for Channel x High
Name: CTLxH
Access Type: Read/Write
Offset: 0x01C + [x * 0x58]
Reset Value: 0x00000002
• DONE: Done Bit
Software can poll this bit to see when a block transfer is complete
• BLOCK_TS: Block Transfer Size
When the DMACA is flow controller, this field is written by the user before the channel is enabled to indicate the block size.
The number programmed into BLOCK_TS indicates the total number of single transactions to perform for every block
transfer, unless the transfer is already in progress, in which case the value of BLOCK_TS indicates the number of single
transactions that have been performed so far.
The width of the single transaction is determined by CTLx.SRC_TR_WIDTH.
31 30 29 28 27 26 25 24
--------
23 22 21 20 19 18 17 16
--------
15 14 13 12 11 10 9 8
- - - DONE BLOCK_TS[11:8]
76543210
BLOCK_TS[7:0]