r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 672

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

13. PCI Controller (PCIC)
(2)
The PCI I/O address space should be allocated as 256 bytes.
The lower eight bits ([7:0]) are sent to the internal bus without translation.
When bits 31 to 8 of a PCI address match bits 31 to 8 of PCIIBAR, the upper 24 bits are replaced
with H'FE04 01 and a PCI local register is accessed.
Rev.1.00 Jan. 10, 2008 Page 642 of 1658
REJ09B0261-0100
Accessing PCIC I/O Space
PCI address
PCIMBAR0/1
PCILSR0/1
PCI address
PCI address
Figure 13.11 PCI Bus to SuperHyway Bus Address Translation
Figure 13.12 I/O Access from PCI Bus to SuperHyway Bus
31
31
31
Compare
31
31
Compare
29
29
29
28
28
28
8
8
20
20
20
19
19
19
7
7
MBARE
0
0
SHwy bus address
0
0
0
SHwy bus
address
PCILAR0/1
31
31
31
H'FE0401
29
29
28
28
8
20
20
7
19
19
0
0
0