參數(shù)資料
型號(hào)： QT0086302TME
英文描述： Controller Miscellaneous - Datasheet Reference
中文描述： 控制器雜項(xiàng)-數(shù)據(jù)表參考
文件頁(yè)數(shù)： 23/62頁(yè)
文件大?。?/td> 268K
代理商： QT0086302TME
82C814
912-3000-047
Revision: 1.0
Page 13
January 08, 1998
OPTi
4.0
Functional Description
4.1
OPTi Docking Station Controller
Chipset
The OPTi Docking Station solution is comprised of two
devices. The minimum configuration requires one chip, the
82C814 part.
The 144-pin 82C814 Docking Controller handles the signal
transfer for a complete PCI bus, including interrupts and
clock generation.
The OPTi PCI-ISA Bridge converts PCI signals back into
ISA signals. No OPTi PCI-ISA Bridge is required in the
system, but one can be added as an option to support ISA
peripherals in an attached docking station that connects
through the PCI bus interface. The OPTi PCI-ISA Bridges
are discussed in a separate document.
The multiple interface arrangement offers the maximum in
system design flexibility.
4.2
Because the OPTi Docking Station Controller Chipset is
based on a PCI host interface, it can be used with any PCI-
Chipset Compatibility
compliant system. ISA DMA may require special software
support on non-OPTi systems.
4.3
The OPTi 82C814 Docking Station Controller Chipset uses
two independent external interfaces. The terms
host interface
and
docking interface
are used throughout this document to
describe these interfaces.
Interface Overview
The
host interface
provides industry standard PCI signals
to the host system. The interface also can be programmed
to return interrupt requests from the docking interfaces.
The
docking interface
duplicates the primary PCI signal
set. It is completely isolated from the primary PCI bus.
The interface signal groups used to integrate the OPTi Dock-
ing Station Controller Chipset into the standard system are
described in the following sections. Figure 4-1 illustrates the
interaction of the logic modules of the OPTi Docking Station
Controller Chipset.
Figure 4-1
82C814 Organization
OPTi
PCI-to-ISA
Bridge
PCI-to-CardBus
Bridge #0
PCI Ctrl, Address, Data
P
r
m
a
r
y
P
C
I
B
u
s
PCI Slots
ISA Slots
CCLK[3:0]
PCIRQ[3:0]#
PCI
IRQs
REQ#
GNT#
Master Req
External
Clock
Source
PCICLK
PCI Function #0
Cfg. Registers
IRQ Driveback
Logic
H
o
s
t
P
C
I
Clock
Generation
Logic
S
e
c
o
n
d
a
r
y
P
C
I
B
u
s
Bus Arbiter
Logic
D
o
c
k
i
n
g
S
t
a
t
i
o
n
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