Manual

344
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
27.4.5 Receive Next Pointer Register
Register Name: PERIPH_RNPR
Access Type: Read/Write
• RXNPTR: Receive Next Pointer
RXNPTR contains next receive buffer address.
When a half duplex peripheral is connected to the PDC, RXNPTR = TXNPTR.
27.4.6 Receive Next Counter Register
Register Name: PERIPH_RNCR
Access Type: Read/Write
• RXNCTR: Receive Next Counter
RXNCTR contains next receive buffer size.
When a half duplex peripheral is connected to the PDC, RXNCTR = TXNCTR.
31 30 29 28 27 26 25 24
RXNPTR
23 22 21 20 19 18 17 16
RXNPTR
15 14 13 12 11 10 9 8
RXNPTR
76543210
RXNPTR
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
––––––––
15 14 13 12 11 10 9 8
RXNCTR
76543210
RXNCTR