HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 471

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

10.2.15 Receiving-Descriptor Fetch Address Register (RDFAR)
This is the register for storing the descriptor start address that is required when the E-DMAC
fetches descriptor information from the receiving descriptor . Which receiving descriptor
information is used for processing by the E-DMAC can be recognized by monitoring addresses
displayed in this register.
Bits 31 to 0—Receiving-descriptor fetch address (RDFA): This bit can only be read. Writing is
disabled.
Note: The descriptor fetch processing result from the E-DMAC and the value read by the
Initial value:
Initial value:
Initial value:
Initial value:
register may not be the same.
R/W:
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
Bit:
RDFA31 RDFA30 RDFA29 RDFA28 RDFA27 RDFA26 RDFA25 RDFA24
RDFA23 RDFA22 RDFA21 RDFA20 RDFA19 RDFA18 RDFA17 RDFA16
RDFA15 RDFA14 RDFA13 RDFA12 RDFA11 RDFA10 RDFA9
RDFA7
31
23
15
R
R
R
R
0
0
0
7
0
Section 10 Ethernet Controller Direct Memory Access Controller (E-DMAC)
RDFA6
30
22
14
R
R
R
R
0
0
0
6
0
RDFA5
29
21
13
R
R
R
R
0
0
0
5
0
RDFA4
28
20
12
R
R
R
R
0
0
0
4
0
Rev. 2.00 Mar 09, 2006 page 445 of 906
RDFA3
27
19
11
R
R
R
R
0
0
0
3
0
RDFA2
26
18
10
R
R
R
R
0
0
0
2
0
RDFA1
REJ09B0292-0200
25
17
R
R
R
R
0
0
9
0
1
0
RDFA8
RDFA0
24
16
R
R
R
R
0
0
8
0
0
0