r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 664

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

13. PCI Controller (PCIC)
For PCI memory space 0, the middle six bits ([23:18]) are controlled by PCIMBMR0.
• PCIMBMR0 [23:18] B'1111 11: PCI address [23:18] = SuperHyway bus address [23:18]
• PCIMBMR0 [23:18] B'0000 00: PCI address [23:18] = PCIMBR0 [23:18]
The upper eight bits ([31:24]) of a SuperHyway bus address are replaced with bits 31 to 24 in
PCIMBR0.
For PCI memory space 1 accesses, the middle eight bits ([25:18]) are controlled by PCIMBMR1.
• PCIMBMR1 [25:18] B'11 1111 11: PCI address [25:18] = SuperHyway bus address [25:18]
• PCIMBMR1 [25:18] B'00 0000 00: PCI address [25:18] = PCIMBR1 [25:18]
The upper six bits ([31:26]) of a SuperHyway bus address are replaced with bits 31 to 26 in
PCIMBR1.
Rev.1.00 Jan. 10, 2008 Page 634 of 1658
REJ09B0261-0100
PCIMBMR0
SHwy bus address
PCIMBMR1
SHwy bus address
Figure 13.3 Access from SuperHyway Bus to PCI Memory (PCI Bus)
Figure 13.4 Access from SuperHyway Bus to PCI Memory (PCI Bus)
31 24
31 24
31 26
31 26
23
23
25
25
(PCI Memory Space 0)
(PCI Memory Space 1)
18 17
18 17
18 17
18 17
0
0
0
0
PCI address
PCI address
mask
PCIMBR0
PCIMBR1
mask
31 26
31 26
31 24
31 24
25
25
23
23
18 17
18 17
18 17
18 17
0
0
0
0