Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
684
33.8.3 SPI Receive Data Register
Name:
SPI_RDR
Address:
0x40008008
Access:
Read-only
RD: Receive Data
Data received by the SPI Interface is stored in this register in a right-justified format. Unused bits are read as zero.
PCS: Peripheral Chip Select
In Master mode only, these bits indicate the value on the NPCS pins at the end of a transfer. Otherwise, these bits are read
as zero.
Note: When using variable peripheral select mode (PS = 1 in SPI_MR), it is mandatory to set the WDRBT field to 1 if the PCS field must
be processed in SPI_RDR .
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
PCS
15
14
13
12
11
10
9
8
RD
7
6
5
4
3
2
1
0
RD