Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Datenbogen
Produktcode
AT32UC3A3-XPLD
741
32072H–AVR32–10/2012
AT32UC3A3
27.8.3.19
Pipe n IN Request Register
Register Name:
UPINRQn, n in [0..7]
Access Type:
Read/Write
Offset:
0x0650 + (n * 0x04)
Reset Value:
0x00000000
• INMODE: IN Request Mode
Writing a one to this bit will allow the USBB to perform infinite IN requests when the Pipe is not frozen.
Writing a zero to this bit will perform a pre-defined number of IN requests. This number is the INRQ field.
• INRQ: IN Request Number before Freeze
This field contains the number of IN transactions before the USBB freezes the pipe. The USBB will perform (INRQ+1) IN
requests before to freeze the Pipe. This counter is automatically decreased by 1 each time a IN request has been successfully
performed.
This register has no effect when the INMODE bit is one (infinite IN requests generation till the pipe is not frozen).
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
INMODE
7
6
5
4
3
2
1
0
INRQ