SH7751 Datasheet, PDF (1006/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. PCI Controller (PCIC)
Always write to this register prior to starting DMA transfers. After a DMA transfer starts, the
register value is not retained. Always re-set this register before starting a new DMA transfer after
a DMA transfer has completed.
Bits 31 to 29—Reserved: These bits always return 0 when read. Always write 0 to these bits.
Bits 28 to 0—DMA Transfer Local Bus Starting Address (PDLA28 to 0): These bits set the
starting address of the local bus (external address of SH bus) for DMA transfer. Bits 28 to 26
indicate the local bus area.
22.2.30 PCI DMA Transfer Counter Register [3:0] (PCIDTC [3:0])
Bit: 31
30
29
28
27
26
25
24
—
—
—
—
—
—
PTC25 PTC24
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R
R
R
R
R
R
R/W
R/W
PP Bus-R/W: R
R
R
R
R
R
R/W
R/W
Bit:
Initial value:
PCI-R/W:
PP Bus-R/W:
23
PTC23
0
R/W
R/W
22
PTC22
0
R/W
R/W
21
PTC21
0
R/W
R/W
20
PTC20
0
R/W
R/W
19
PTC19
0
R/W
R/W
18
PTC18
0
R/W
R/W
17
PTC17
0
R/W
R/W
16
PTC16
0
R/W
R/W
Bit:
Initial value:
PCI-R/W:
PP Bus-R/W:
15
PTC15
0
R/W
R/W
14
PTC14
0
R/W
R/W
13
PTC13
0
R/W
R/W
12
PTC12
0
R/W
R/W
11
PTC11
0
R/W
R/W
10
PTC10
0
R/W
R/W
9
PTC9
0
R/W
R/W
8
PTC8
0
R/W
R/W
Bit:
Initial value:
PCI-R/W:
PP Bus-R/W:
7
PTC7
0
R/W
R/W
6
PTC6
0
R/W
R/W
5
PTC5
0
R/W
R/W
4
PTC4
0
R/W
R/W
3
PTC3
0
R/W
R/W
2
PTC2
0
R/W
R/W
1
PTC1
0
R/W
R/W
0
PTC0
0
R/W
R/W
Rev.4.00 Oct. 10, 2008 Page 908 of 1122
REJ09B0370-0400