HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 433

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

10.2.4
TDLAR specifies the start address of the transmit descriptor list. Descriptors have a boundary
configuration in accordance with the descriptor length indicated by the DMR.DL bit.
Bits 31 to 0—Transmit Descriptor Start Address 31 to 0 (TDLA31 to TDLA0) : These bits should
only be written with 0.
Notes: The lower bits are set as follows according to the specified descriptor length.
418
Initial value:
Initial value:
Initial value:
Initial value:
16-byte boundary: TDLA[3:0] = 0000
32-byte boundary: TDLA[4:0] = 00000
64-byte boundary: TDLA[5:0] = 000000
This register must not be written to during transmission. Modifications to this register
should only be made while transmission is disabled.
Tx Descriptor List Address Register (TDLAR)
R/W:
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
Bit:
TDLA31 TDLA30 TDLA29 TDLA28 TDLA27 TDLA26 TDLA25 TDLA24
TDLA23 TDLA22 TDLA21 TDLA20 TDLA19 TDLA18 TDLA17 TDLA16
TDLA15 TDLA14 TDLA13 TDLA12 TDLA11 TDLA10
TDLA7
R/W
R/W
R/W
R/W
31
23
15
0
0
0
7
0
TDLA6
R/W
R/W
R/W
R/W
30
22
14
0
0
0
6
0
TDLA5
R/W
R/W
R/W
R/W
29
21
13
0
0
0
5
0
TDLA4
R/W
R/W
R/W
R/W
28
20
12
0
0
0
4
0
TDLA3
R/W
R/W
R/W
R/W
27
19
11
0
0
0
3
0
TDLA2
R/W
R/W
R/W
R/W
26
18
10
0
0
0
2
0
TDLA9
TDLA1
R/W
R/W
R/W
R/W
25
17
0
0
9
0
1
0
TDLA8
TDLA0
R/W
R/W
R/W
R/W
24
16
0
0
8
0
0
0