SH7785 Datasheet, PDF (605/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

13. PCI Controller (PCIC)
(14) PCI Memory Base Address Register 0 (PCIMBAR0)
This register is the memory base address register of the PCI configuration register space header
that is defined in PCI local bus specification. PCIMBAR0 specifies the memory space 0 (local
address space 0) in this LSI internal bus (SuperHyway bus).
See section 13.4.4 (1), Accessing Memory Space in This LSI.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MBA1
MBA2
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SH R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R R R R
PCI R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R R R R
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
MBA2
LAP
LAT
ASI
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SH R/W: R R R R R R R R R R R R R R R R
PCI R/W: R R R R R R R R R R R R R R R R
Initial
Bit
Bit Name Value
31 to 20 MBA1
H'000
R/W
SH: R/W
PCI: R/W
Description
Memory Space 0 Base Address (upper 12 bits)
These bits specify the upper 12 bits of memory base
address for the local address space 0 (the address
space in the internal bus).
The valid bits of MBA1 depend on the capacity of the
local address space specified with LSR in PCILSR0.
LSR in PCILSR0 Address space Valid bits of MBA1
[28:20]
B'0 0000 0000 1 Mbyte
[31:20]
B'0 0000 0001 2 Mbytes
[31:21]
B'0 0000 0011 4 Mbytes
[31:22]
B'0 0000 0111 8 Mbytes
[31:23]
B'0 0000 1111 16 Mbytes
[31:24]
B'0 0001 1111 32 Mbytes
[31:25]
B'0 0011 1111 64 Mbytes
[31:26]
B'0 0111 1111 128 Mbytes [31:27]
B'0 1111 1111 256 Mbytes [31:28]
B'1 1111 1111 512 Mbytes [31:29]
Other than above: Setting prohibited
Rev.1.00 Jan. 10, 2008 Page 575 of 1658
REJ09B0261-0100