AT32UC3A0512_1 Datasheet, PDF (549/826 Pages) ATMEL Corporation – AVR32 32-Bit Microcontroller

AT32UC3A
• DMA_BUFFER_SIZE: DMA Buffer Size
This field indicates the size of the DMA buffer:
DMA_BUFFER_SIZE
0
1
DMA Buffer Size
16 bits
24 bits
• DMA_FIFO_WORD_DEPTH: DMA FIFO Depth in Words
This field indicates the DMA FIFO depth controller in words:
DMA_FIFO_WORD_DEPTH
0
0
0
0
0
0
0
1
0
0
1
0
1
1
1
1
DMA FIFO Depth in Words
16
1
2
...
15
• FIFO_MAX_SIZE: Maximal FIFO Size
This field indicates the maximal FIFO size, i.e. the DPRAM size:
FIFO_MAX_SIZE
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Maximal FIFO Size
< 256 bytes
< 512 bytes
< 1024 bytes
< 2048 bytes
< 4096 bytes
< 8192 bytes
< 16384 bytes
>= 16384 bytes
• BYTE_WRITE_DPRAM: DPRAM Byte-Write Capability
This field indicates whether the DPRAM is byte-write capable:
BYTE_WRITE_DPRAM
0
1
DPRAM Byte-Write Capability
DPRAM byte write lanes have shadow logic implemented in the USB macro IP interface.
DPRAM is natively byte-write capable.
32058H–AVR32–03/09
549