at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 98
at91rm3400
Manufacturer Part Number
at91rm3400
Description
Atmel Advanced At91 Arm Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT91RM3400.pdf
(461 pages)
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PDC Receive Next Pointer Register
Register Name:
Access Type:
• RXNPTR: Receive Next Pointer Address
RXNPTR is the address of the next buffer to fill with received data when the current buffer is full.
PDC Receive Next Counter Register
Register Name:
Access Type:
• RXNCR: Receive Next Counter Value
·RXNCR is the size of the next buffer to receive.
PDC Transmit Next Pointer Register
Register Name:
Access Type:
• TXNPTR: Transmit Next Pointer Address
TXNPTR is the address of the next buffer to transmit when the current buffer is empty.
98
31
23
15
31
23
15
31
23
15
7
7
7
AT91RM3400
PERIPH_RNPR
Read/Write
PERIPH_RNCR
Read/Write
PERIPH_TNPR
Read/Write
30
22
14
30
22
14
30
22
14
6
6
6
29
21
13
29
21
13
29
21
13
5
5
5
28
20
12
28
20
12
28
20
12
4
4
4
RXNPTR
RXNPTR
RXNPTR
RXNPTR
TXNPTR
TXNPTR
TXNPTR
TXNPTR
RXNCR
RXNCR
--
--
27
19
11
27
19
11
27
19
11
3
3
3
26
18
10
26
18
10
26
18
10
2
2
2
25
17
25
17
25
17
9
1
9
1
9
1
1790A–ATARM–11/03
24
16
24
16
24
16
8
0
8
0
8
0
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