Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
438
42023E–SAM–07/2013
ATSAM4L8/L4/L2
18.5.3
Data Buffer Pointer Register
Name:
DATABUFPTR
Access Type:
Read/Write
Offset:
0x08
Reset Value:
0x00000000
• ODATAW: Output Data Word
Writing to this field changes the value of the output buffer pointer, which determines which of the four output buffer registers is
read from when the next read from the ODATA register address is performed.
• IDATAW: Input Data Word
Writing to this field changes the value of the input buffer pointer, which determines which of the four input buffer registers is
written to when the next write to the IDATA register address is performed.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
-
-
ODATAW
-
-
IDATAW