r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 596
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r5s77631ay266bgv
Manufacturer Part Number
r5s77631ay266bgv
Description
Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5S77631AY266BGV.pdf
(2026 pages)
- Current page: 596 of 2026
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Section 13 PCI Controller (PCIC)
(2)
Figure 13.2 shows the method for accessing the PCI bus allocated to the PCI memory space from
the SuperHyway bus.
To access to the PCI memory address space, use the PCI memory bank register (PCIMBR) and
PCI memory bank mask register (PCIMBMR). These registers should have an address space
ranging from 16 Mbytes to 512 Mbytes. PCI addresses can be allocated to by software.
The PCIC supports burst transfers to memory transfer.
Consecutive accesses with the SuperHyway load 32-byte or SuperHyway store 32-byte command
result in a burst transfer of 32-byte or more (64-byte, 96-byte, etc.).
The PCI memory spaces are allocated from H'FD00 0000 to H'FDFF FFFF for PCI memory space
0 (16 Mbytes), H'1000 0000 to H'13FF FFFF for PCI memory space 1 (Area 4, 64 Mbytes,
selection of the PCIC, DDRIF and LBSC spaces), and H'C000 0000 to H'DFFF FFFF for PCI
memory space 2 (512 Mbytes, available only in 32-bit address extended mode).
Address translation from SuperHyway bus to PCI local bus
The lower 15 bits ([17:3]) of a SuperHyway bus address are sent without translation.
Rev. 1.00 Oct. 01, 2007 Page 530 of 1956
REJ09B0256-0100
Accessing PCI Memory Space
H'0000 0000
H'1000 0000
H'C000 0000
H'FD00 0000
H'FE00 0000
H'FE20 0000
Figure 13.2 SuperHyway Bus to PCI Local Bus Access
PCI memory space 1
PCI memory space 2
PCI memory space 0
address space (4GB)
Register 2 Mbytes
PCI I/O 2 Mbytes
SuperHyway bus
512 Mbytes
64 Mbytes
16 Mbytes
address space (4GB)
16 Mbytes
64 Mbytes
PCI local bus
512 Mbytes
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