SH7751 Datasheet, PDF (1005/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. PCI Controller (PCIC)
22.2.29 PCI DMA Transfer Local Bus Start Address Register [3:0] (PCIDLA [3:0])
Bit: 31
30
29
28
27
26
25
24
—
—
— PDLA28 PDLA27 PDLA26 PDLA25 PDLA24
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R
R
R
R/W
R/W
R/W
R/W
R/W
PP Bus-R/W: R
R
R
R/W
R/W
R/W
R/W
R/W
Bit: 23
22
21
20
19
18
17
16
PDLA23 PDLA22 PDLA21 PDLA20 PDLA19 PDLA18 PDLA17 PDLA16
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PP Bus-R/W: R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
Initial value:
PCI-R/W:
PP Bus-R/W:
15
14
13
12
11
10
PDLA15 PDLA14 PDLA13 PDLA12 PDLA11 PDLA10
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
9
PDLA9
0
R/W
R/W
8
PDLA8
0
R/W
R/W
Bit:
Initial value:
PCI-R/W:
PP Bus-R/W:
7
PDLA7
0
R/W
R/W
6
PDLA6
0
R/W
R/W
5
PDLA5
0
R/W
R/W
4
PDLA4
0
R/W
R/W
3
PDLA3
0
R/W
R/W
2
PDLA2
0
R/W
R/W
1
PDLA1
0
R/W
R/W
0
PDLA0
0
R/W
R/W
The DMA transfer local bus start address register [3:0] (PCIDLA [3:0]) specifies the starting
address at the local bus when performing DMA transfers.
This 32-bit read/write register can be accessed from both the PP bus and PCI bus.
The PCIDLA register is initialized to H'00000000 at a power-on reset and a software reset.
The transfer address of a byte boundary or character boundary can be set, but the 2 least
significant bits of the register are ignored, and the data of the longword boundary is transferred.
Note that the local bus starting address set in this register is the external address of the SH bus.
Rev.4.00 Oct. 10, 2008 Page 907 of 1122
REJ09B0370-0400