r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 620

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

13. PCI Controller (PCIC)
13.3.3
(1)
PCICR is a 32-bit register which controls the operation of the PCIC in this LSI.
Writing to this register is valid only when the value of bits 31 to 24 are H'A5.
Rev.1.00 Jan. 10, 2008 Page 590 of 1658
REJ09B0261-0100
Initial value:
Initial value:
Bit
31 to 24 ⎯
23 to 12 ⎯
11
PCI R/W:
PCI R/W:
SH R/W:
SH R/W:
PCI Control Register (PCICR)
Bit:
Bit:
PCI Local Registers
Bit Name
PFCS
R/W
31
15
—
—
R
R
R
0
0
R/W
30
—
14
—
R
R
R
0
0
R/W
Initial
Value
H'00
All 0
0
29
—
13
—
R
R
R
0
0
R/W
28
12
—
—
R
R
R
0
0
PFCS
R/W
SH: R/W
PCI: R
SH: R
PCI: R
SH: R/W
PCI: R
R/W
R/W
27
11
—
R
R
0
0
R/W
FTO
R/W
26
10
—
R
R
0
0
Description
Reserved
These bits should be set to H'A5 (write H'A5 to these
bits) only before bits 11 to 8, 6, and 2 to 0 are written.
These bits are always read as 0.
Reserved
These bits are always read as 0. The write value
should always be 0.
PCI Pre-Fetch Command Setting
Specifies the access size for pre-fetch when the target
memory read access is issued by an external PCI
device.
This bit is valid only when the PFE bit is 1.
0: 8-byte pre-fetch is always performed
1: 32-byte pre-fetch is always performed
R/W
PFE
R/W
25
—
R
R
0
9
0
R/W
TBS
R/W
24
—
R
R
0
8
0
23
—
—
R
R
R
R
0
7
0
BMAM
R/W
22
—
R
R
R
0
6
0
21
—
—
R
R
R
R
0
5
x
20
—
—
R
R
R
R
0
4
x
19
—
—
R
R
R
R
0
3
x
IOCS
R/W
18
—
R
R
R
0
2
0
R/W
RST
CTL
17
—
R
R
R
0
1
0
CFINT
R/W
16
—
R
R
R
0
0
0