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PDF 82C814 Data sheet ( Hoja de datos )
| Número de pieza | 82C814 | |
| Descripción | Docking Station Controller Preliminary Data Book | |
| Fabricantes | Opti | |
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OPTi
®
82C814
Docking Station Controller
Preliminary Data Book
Revision: 2.0
912-2000-016
October 31, 1996
1 page  
Preliminary
82C814
Table of Contents (cont.)
5.5 Docking Station Window Selection Group .....................................................................................37
5.5.1 Warning on Using Docking Station Windows .......................................................................37
5.5.2 Docking Station Window Registers ......................................................................................37
5.5.2.1 Cycle Decoding .....................................................................................................38
5.5.2.2 Cycle Trapping ......................................................................................................38
5.5.2.3 ISA Window Selection...........................................................................................38
5.6 Register Summary ............................................................................................................................45
6.0 Electrical Ratings ........................................................................................................... 48
6.1 Absolute Maximum Ratings.............................................................................................................48
6.2 DC Characteristics: VCC = 3.3V or 5.0V ±5%, TA = 0°C to +70°C.................................................48
6.3 AC Characteristics............................................................................................................................49
6.4 AC Timing Diagrams ........................................................................................................................50
7.0 Mechnical Package Outline........................................................................................... 51
Appendix A IRQ Driveback Protocol ................................................................................. 53
A.1 Driveback Cycle Format ...................................................................................................................53
A.2 Edge vs Level Mode, IRQ Polarity ...................................................................................................54
A.3 Host Handling of IRQ Driveback Information.................................................................................54
A.4 External Implementation ..................................................................................................................55
912-2000-016
Revision: 2.0
OPTi
®
Page v
5 Page 
OPTi
®
Preliminary
82C814
Docking Station Controller
1.0 Features
• Provides true hot docking and undocking
• Supports 3.3V or 5.0V PCI dock
• Host PCI bus can be 3.3V or 5.0V
• Works in conjunction with 82C825 PCI-to-ISA bridge to
provide reliable ISA support on the dock
• Provides eight windows, selectable for memory or I/O
• Offers additional fixed window for VGA
• Supports INTA#, INTB#, INTC#, INTD#
• Supports four bus masters
• Generates PCI clocks for four devices
• Bridge solution increases primary PCI bus bandwidth by
off-loading transactions into buffers
• Packaged in 144-pin TQFP (Thin Quad Flat Pack)
Figure 2-1 Multiple ISA Bus Support
2.0 Overview
This document describes the OPTi 82C814 Docking Station
Controller, a true bridge docking solution that allows software
to treat the docking station like a dynamically insertable/
removable CardBus card.
The PCI software interface conforms to the CardBus header
layout, instead of the PCI-to-PCI bridge header layout, to
overcome the limitations of PCI-to-PCI bridges.
The docking controller implements a true PCI-PCI bridge with
full buffering and synchronous or asynchronous operation.
CPU
FireStar
or
Viper-N+
Local ISA Bus
PCI Bus 0
82C930
Sound
Chip
(Ports 340-35Fh)
82C814
Docking
Station
Controller
92C178
PCI
LCD/SVGA
Controller
PCI Bus 1
82C825
PCI-ISA
Bridge
PCI
Device
Docking ISA Bus
82C930
Sound
Card
(Ports 340-35Fh)
912-2000-016
Revision: 2.0
Page 1
11 Page | ||
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