r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 653

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

(23) PCI I/O Bank Mask Register (PCIIOBMR)
This register is the mask register for PCIIOBR. This register specifies the I/O space size on the
PCI bus for an I/O-read or I/O-write to the PCI I/O space by the CPU or DMAC.
See section 13.4.3 (3), Accessing PCI I/O Space.
Initial value:
Initial value:
Bit
31 to 21 —
20 to 18 IOBAM
17 to 0
PCI R/W:
PCI R/W:
SH R/W:
SH R/W:
Bit:
Bit:
Bit Name
⎯
31
15
—
—
—
—
R
R
0
0
30
14
—
—
—
—
R
R
0
0
Initial
Value
All 0
All 0
All 0
29
13
—
—
—
—
R
R
0
0
28
—
—
12
—
—
R
R
0
0
R/W
PCI: ⎯
SH: R/W
PCI: ⎯
SH: R
PCI: ⎯
SH: R
27
—
—
11
—
—
R
R
0
0
26
10
—
—
—
—
R
R
0
0
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
PCI I/O Space Bank Address Mask (3 bits)
000: 256 kbytes
001: 512 kbytes
011: 1 Mbyte
111: 2 Mbytes
Other than above: Setting prohibited
Reserved
These bits are always read as 0. The write value
should always be 0.
25
—
—
—
—
R
R
0
9
0
24
—
—
—
—
R
R
0
8
0
23
—
—
—
—
R
R
0
7
0
Rev.1.00 Jan. 10, 2008 Page 623 of 1658
22
—
—
—
—
R
R
0
6
0
21
—
—
—
—
R
R
0
5
0
R/W
20
—
—
—
R
0
4
0
13. PCI Controller (PCIC)
IOBAM
R/W
19
—
—
—
R
0
3
0
REJ09B0261-0100
R/W
18
—
—
—
R
0
2
0
17
—
—
—
—
R
R
0
1
0
16
—
—
—
—
R
R
0
0
0