Spi receive pointer register, Spi receive counter register – Rainbow Electronics AT75C220 User Manual
Page 136
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AT75C220
136
SPI Receive Pointer Register
Register Name:SP_RPR
Access Type:Read/write
Reset Value:0x0
•
RXPTR: Receive Pointer
RXPTR must be loaded with the address of the receive buffer.
SPI Receive Counter Register
Register Name:SP_CPR
Access Type:Read/write
Reset Value:0x0
•
RXCTR: Receive Counter Register
RXCTR must be loaded with the size of the receive buffer.
0 = Stop peripheral data transfer
1 - 4294967295 = 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
RXCTR
23
22
21
20
19
18
17
16
RXCTR
15
14
13
12
11
10
9
8
RXCTR
7
6
5
4
3
2
1
0
RXCTR
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