13. PCI Controller (PCIC)
Rev.1.00 Jan. 10, 2008 Page 564 of 1658
REJ09B0261-0100
(3)
PCI Command Register (PCICMD)
PCICMD controls the basic functions of the PCIC to generate and respond to PCI cycles. When 0
is written to this register, this register ignores access commands from the external PCI device,
other than configuration access.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
IOS
MS
BM
SC
MWIE
VGAPS
PER
WCC
SERRE
FBBE
⎯
⎯
⎯
⎯
⎯
⎯
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R
R
R
R/W
R/W
R/W
R
R
R
R
R
R
R
Bit:
Initial value:
SH R/W:
R/W
R/W
R/W
R
R
R
R/W
R/W
R/W
R
R
R
R
R
R
R
PCI R/W:
Bit Bit
Name
Initial
Value R/W
Description
15 to 10
⎯
All 0
SH: R
PCI: R
Reserved
These bits are always read as 0. The write value
should always be 0.
9 FBBE
0
SH:
R
PCI: R
PCI Fast Back-to-Back Enable
Specifies whether fast back-to-back control is
performed on the different devices or not when the
PCIC is a master.
0: Enables fast back-to-back control for the same target
1: Enables fast back-to-back control for different targets
(not supported)
8 SERRE
0
SH:
R/W
PCI: R/W
SERR
Output Control
Controls the
SERR
output.
0:
SERR
output disabled (pulled up by high impedance
and a pull-up resistor)
1:
SERR
output enabled (
SERR
= low output)
7 WCC
1
SH:
R/W
PCI: R/W
Wait Cycle Control
Controls the address/data stepping.
When WCC is 1, both an address and data, only an
address, and only data are output at master write,
master read, and target read respectively for two clock
cycles.
0: Address/data stepping control disabled
1: Address/data stepping control enabled
Содержание SH7781
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Страница 74: ...2 Programming Model Rev 1 00 Jan 10 2008 Page 44 of 1658 REJ09B0261 0100 ...
Страница 272: ...8 Caches Rev 1 00 Jan 10 2008 Page 242 of 1658 REJ09B0261 0100 ...
Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
Страница 1688: ...Appendix Rev 1 00 Jan 10 2008 Page 1658 of 1658 REJ09B0261 0100 ...
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