SH7785 Datasheet, PDF (627/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

13. PCI Controller (PCIC)
(5) PCI Local Address Register 1 (PCILAR1)
See section 13.4.3 (2), Accessing PCI Memory Space.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
LAR
————
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SH R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R R R R
PCI R/W: R R R R R R R R R R R R R R R R
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
————————————————
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SH R/W: R R R R R R R R R R R R R R R R
PCI R/W: R R R R R R R R R R R R R R R R
Bit
Bit Name
31 to 20 LAR
Initial
Value
H'000
R/W
SH: R/W
PCI: R
19 to 0 ⎯
All 0 SH: R
PCI: R
Description
Local Address (12 bits)
These bits specify bits 31 to 20 for the start address of
the local address space 1 (this LSI internal bus
space).
As shown below, the valid bits of LAR change
depending on the local address space size specified
by the LSR bit in PCILSR1.
PCILSR1.LSR ([28:20]) = B'0 0000 0000: Bits [31:20] are valid.
PCILSR1.LSR ([28:20]) = B'0 0000 0001: Bits [31:21] are valid.
PCILSR1.LSR ([28:20]) = B'0 0000 0011: Bits [31:22] are valid.
PCILSR1.LSR ([28:20]) = B'0 0000 0111: Bits [31:23] are valid.
PCILSR1.LSR ([28:20]) = B'0 0000 1111: Bits [31:24] are valid.
PCILSR1.LSR ([28:20]) = B'0 0001 1111: Bits [31:25] are valid.
PCILSR1.LSR ([28:20]) = B'0 0011 1111: Bits [31:26] are valid.
PCILSR1.LSR ([28:20]) = B'0 0111 1111: Bits [31:27] are valid.
PCILSR1.LSR ([28:20]) = B'0 1111 1111: Bits [31:28] are valid.
PCILSR1.LSR ([28:20]) = B'1 1111 1111: Bits [31:29] are valid.
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev.1.00 Jan. 10, 2008 Page 597 of 1658
REJ09B0261-0100