r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 604

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

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.
Rev.1.00 Jan. 10, 2008 Page 574 of 1658
REJ09B0261-0100
Initial value:
Initial value:
Bit
31 to 8
7 to 2
1
0
PCI R/W:
PCI R/W:
SH R/W:
SH R/W:
Bit:
Bit:
Bit Name
IOB1
(upper)
IOB2
(lower)
⎯
ASI
R/W
R/W
R/W
R/W
31
15
0
0
R/W
R/W
R/W
R/W
30
14
0
0
R/W
R/W
R/W
R/W
Initial
Value
H'000000 SH: R/W
000000
0
1
29
13
0
0
IOB1 (upper)
R/W
R/W
R/W
R/W
28
12
0
0
R/W
R/W
R/W
R/W
R/W
PCI: R/W
SH: R
PCI: R
SH: R
PCI: R
SH: R
PCI: R
27
11
0
0
R/W
R/W
R/W
R/W
26
10
0
0
R/W
R/W
R/W
R/W
25
Description
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).
I/O Space Base Address (lower 6 bits)
These bits are fixed to B'000000 by hardware.
Reserved
This bit is always read as 0. The write value should
always be 0.
Address Space Indicator
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
0
9
0
IOB1 (upper)
R/W
R/W
R/W
R/W
24
0
8
0
R/W
R/W
23
R
R
0
7
0
R/W
R/W
22
R
R
0
6
0
IOB2 (lower)
R/W
R/W
21
R
R
0
5
0
R/W
R/W
20
R
R
0
4
0
R/W
R/W
19
R
R
0
3
0
R/W
R/W
18
R
R
0
2
0
R/W
R/W
17
⎯
R
R
0
1
0
R/W
R/W
ASI
16
R
R
0
0
1