SH7751 Datasheet, PDF (988/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

22. PCI Controller (PCIC)
22.2.19 PCI Local Address Register [1:0] (PCILAR [1:0])
Bit: 31
30
29
28
27
26
25
24
—
—
—
LAR28 LAR27 LAR26 LAR25 LAR24
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R
R
R
R
R
R
R
R
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
LAR23 LAR22 LAR21 LAR20
—
—
—
—
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R
R
R
R
R
R
R
R
PP Bus-R/W: R/W
R/W
R/W
R/W
R
R
R
R
Bit: 15
14
13
12
11
10
9
8
—
—
—
—
—
—
—
—
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R
R
R
R
R
R
R
R
PP Bus-R/W: R
R
R
R
R
R
R
R
Bit:
7
6
5
4
3
2
1
0
—
—
—
—
—
—
—
—
Initial value:
0
0
0
0
0
0
0
0
PCI-R/W: R
R
R
R
R
R
R
R
PP Bus-R/W: R
R
R
R
R
R
R
R
The PCI local address register [1:0] (PCILAR [1:0]) specifies the starting address (external
address of local bus) of the two local address spaces (address space 0 and address space 1)
supported when performing memory read/memory write operations due to target transfers to the
PCIC. It is a 32-bit register that can be read and written from the PP bus and is read-only from the
PCI bus.
The PCILAR [1:0] register is initialized to H'00000000 at a power-on reset and software reset.
The valid bits of the local address specified by this register vary according to the capacity of the
address space specified in the PCILSR [1:0] register. In other words, set 0 in the least significant
address bit which corresponds to the capacity set by PCILSR0, 1, and set the starting address only
Rev.4.00 Oct. 10, 2008 Page 890 of 1122
REJ09B0370-0400