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1745D–ATARM–04-Nov-05
AT91M55800A
20.7.9 SPI Receive Pointer Register
Name: SP_RPR
Access Type: Read/Write
Reset State: 0
Offset: 0x20
• RXPTR: Receive Pointer
RXPTR must be loaded with the address of the receive buffer.
20.7.10 SPI Receive Counter Register
Name: SP_RCR
Access Type: Read/Write
Reset State: 0
Offset: 0x24
• RXCTR: Receive Counter
RXCTR must be loaded with the size of the receive buffer.
0: Stop Peripheral Data Transfer dedicated to the receiver.
1 - 65535: Start Peripheral Data transfer if RDRF is active.
31 30 29 28 27 26 25 24
RXPTR
23 22 21 20 19 18 17 16
RXPTR
15 14 13 12 11 10 9 8
RXPTR
7 6 5 4 3 2 1 0
RXPTR
31 30 29 28 27 26 25 24
– – – – – – – –
23 22 21 20 19 18 17 16
– – – – – – – –
15 14 13 12 11 10 9 8
RXCTR
7 6 5 4 3 2 1 0
RXCTR