Note: Changing the BRG value when SPIEN = 1
causes undefined behavior.
Legend: R = Readable bit; W = Writable bit
Name:
SPIxBUF
Offset:
0x180C + (x-1)*0x04 [x=1..3]
Bit
31
30
29
28
27
26
25
24
SPIxBUF[31:24]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
SPIxBUF[23:16]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
SPIxBUF[15:8]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
SPIxBUF[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bits 31:0 – SPIxBUF[31:0] SPIx FIFO Data
bits
Table 22-5 summarizes the valid data fields for
possible values of the MODE32, MODE16 and WLENGTH[4:0] bits.
Table 22-5. MODE32, MODE16 and
WLENGTH[4:0] Data Fields
MODE32
MODE16
WLENGTH[4:0]
COMMUNICATION
Valid Data Field Data
1
X
0
32-bit
DATA[31:0]
0
1
0
16-bit
DATA[15:0]
0
0
0
8-bit
DATA[07:0]
X
X
16 < N < 31
(N+1)-bit
DATA[31:(31-N)]
X
X
8 < N < 15
(N+1)-bit
DATA[15:(15-N)]
X
X
1 < N < 7
(N+1)-bit
DATA[07:(07-N)]
DS70005629B
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
