r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 647

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

(17) PCI Memory Bank Mask Register 0 (PCIMBMR0)
This register is the mask register for PCIMBR0. This register specifies the memory space size on
the PCI bus for a memory read or write to the PCI memory space 0 by the CPU or DMAC.
See section 13.4.3 (2), Accessing PCI Memory Space.
Initial value:
Initial value:
Bit
31 to 24 ⎯
23 to 18 MSBAM0
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
000000 SH: R/W
All 0
29
13
—
—
—
—
R
R
0
0
28
—
—
12
—
—
R
R
0
0
R/W
SH: R
PCI: ⎯
PCI: ⎯
SH: R
PCI: ⎯
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 Memory Space 0 Bank Address Mask (6 bits)
0000 00: 256 kbytes
0000 01: 512 kbytes
0000 11: 1 Mbyte
0001 11: 2 Mbytes
0011 11: 4 Mbytes
0111 11: 8 Mbytes
1111 11: 16 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
R/W
23
—
—
—
R
0
7
0
Rev.1.00 Jan. 10, 2008 Page 617 of 1658
R/W
22
—
—
—
R
0
6
0
R/W
21
MSBAM0
—
—
—
R
0
5
0
R/W
20
—
—
—
R
0
4
0
13. PCI Controller (PCIC)
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