SH7785 Datasheet, PDF (604/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

13. PCI Controller (PCIC)
(13) PCI I/O Base Address Register (PCIIBAR)
This register is the I/O space base address register of the PCI configuration register space header
that is defined in PCI local bus specification. This register specifies the base address in the I/O
space of the PCIC.
See section 13.4.4 (2), Accessing PCIC I/O Space.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
IOB1 (upper)
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/W R/W R/W R/W
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/W R/W R/W R/W
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
IOB1 (upper)
IOB2 (lower)
⎯ ASI
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
SH R/W: R/W R/W R/W R/W R/W R/W R/W R/W R R R R R R R R
PCI R/W: R/W R/W R/W R/W R/W R/W R/W R/W R R R R R R R R
Bit
31 to 8
7 to 2
1
0
Bit Name
IOB1
(upper)
IOB2
(lower)
⎯
ASI
Initial
Value R/W
Description
H'000000 SH: R/W
PCI: R/W
I/O Space Base Address (upper 24 bits)
These bits specify the upper 24 bits of the base
address for the I/O space of the PCIC (PCIC control
register space).
000000 SH: R
PCI: R
I/O Space Base Address (lower 6 bits)
These bits are fixed to B'000000 by hardware.
0
SH: R Reserved
PCI: R
This bit is always read as 0. The write value should
always be 0.
1
SH: R Address Space Indicator
PCI: R
Indicates whether the base address indicated by this
register is in the I/O space or memory space.
0: Memory space
1: I/O space
Rev.1.00 Jan. 10, 2008 Page 574 of 1658
REJ09B0261-0100