Datasheet

374
32072H–AVR32–10/2012
AT32UC3A3
19.12.20 Last Source Transaction Request Register
Name: LstSrcReg
Access Type: Read/write
Offset: 0x388
Reset Value: 0x0000000
A bit is assigned for each channel in this register. LstSrcReg[n] is ignored when software handshaking is not enabled for
the source of channel n.
A channel LSTSRC bit is written only if the corresponding channel write enable bit in the LSTSRC_WE field is asserted on
the same System Bus write transfer.
• LSTSRC_WE[11:8]: Source Last Transaction request write enable
0 = Write disabled
1 = Write enabled
• LSTSRC[3:0]: Source Last Transaction request
31 30 29 28 27 26 25 24
--------
23 22 21 20 19 18 17 16
--------
15 14 13 12 11 10 9 8
----LSTSRC_W
E3
LSTSRC_W
E2
LSTSRC_W
E1
LSTSRC_W
E0
76543210
- - - - LSTSRC3 LSTSRC2 LSTSRC1 LSTSRC0