Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
680
32072H–AVR32–10/2012
AT32UC3A3
27.8.1.6
Features Register
Register Name:
UFEATURES
Access Type:
Read-Only
Offset:
0x081C
Read Value:
-
• ENHBISOn: High Bandwidth Isochronous Feature for Endpoint n
1: The high bandwidth isochronous is supported.
0: The high bandwidth isochronous is not supported.
• DATABUS: Data Bus 16-8
1: The UTMI data bus is a 16-bit data path at 30MHz.
0: The UTMI data bus is a 8-bit data path at 60MHz.
• BYTEWRITEDPRAM: DPRAM Byte-Write Capability
1: The DPRAM is natively byte-write capable.
0: The DPRAM byte write lanes have shadow logic implemented in the USBB IP interface.
• FIFOMAXSIZE: Maximal FIFO Size
This field indicates the maximal FIFO size, i.e., the DPRAM size:
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
ENHBISO7
ENHBISO6
ENHBISO5
ENHBISO4
ENHBISO3
ENHBISO2
ENHBISO1
DATABUS
15
14
13
12
11
10
9
8
BYTEWRITE
DPRAM
FIFOMAXSIZE
DMAFIFOWORDDEPTH
7
6
5
4
3
2
1
0
DMABUFFE
RSIZE
DMACHANNELNBR
EPTNBRMAX
FIFOMAXSIZE
Maximal FIFO Size
0
0
0
< 256 bytes
0
0
1
< 512 bytes
0
1
0
< 1024 bytes
0
1
1
< 2048 bytes
1
0
0
< 4096 bytes
1
0
1
< 8192 bytes
1
1
0
< 16384 bytes
1
1
1
>= 16384 bytes