r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 994

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 23 Gigabit Ethernet Controller (GETHER)
23.3.82 Receive Descriptor Finished Address Register (RDFXR)
RDFXR stores the start address of the receive descriptor for which the E-DMAC has just
completed the write-back processing. Up to which receive descriptor has been processed by the E-
DMAC can be recognized by monitoring addresses displayed in this register. In the initial setting,
set the address of the descriptor immediately before the descriptor that is pointed to by the address
in RDFAR.
Rev. 1.00 Oct. 01, 2007 Page 928 of 1956
REJ09B0256-0100
Bit
31 to 0
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
Bit Name
RDFX[31:0]
R/W
R/W
31
15
0
0
R/W
R/W
30
14
0
0
R/W
R/W
29
13
0
0
Initial
Value
All 0
R/W
R/W
28
12
0
0
R/W
R/W
27
11
0
0
R/W
R/W
R/W
R/W
26
10
0
0
Description
Receive Descriptor Finished Address
Writing to these bits during the reception is prohibited.
R/W
R/W
25
0
9
0
RDFX[31:16]
R/W
R/W
RDFX[15:0]
24
0
8
0
R/W
R/W
23
0
7
0
R/W
R/W
22
0
6
0
R/W
R/W
21
0
5
0
R/W
R/W
20
0
4
0
R/W
R/W
19
0
3
0
R/W
R/W
18
0
2
0
R/W
17
0
1
0
R/W
R/W
16
0
0
0