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QT82C881 데이터시트 PDF




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QT82C881 데이터시트, 핀배열, 회로
®
FireLink 1394 OHCI
Link Controller
82C881
Preliminary Data Book
CONFIDENTIAL
Revision 1.0
912-2000-031
December 13, 1999




QT82C881 pdf, 반도체, 판매, 대치품
FireLink 1394 OHCI
82C881
5.3.1 PCI Configuration Space (PCICFG 00h to 3Fh) ................................................................................................ 23
5.4 POWER MANAGEMENT REGISTERS................................................................................................................................. 25
5.5 TIMING INFORMATION .................................................................................................................................................... 28
6.0 ELECTRICAL RATINGS............................................................................................................................................... 29
7.0 MECHANICAL PACKAGE............................................................................................................................................ 31
8.0 TEST MODES ............................................................................................................................................................... 33
9.0 APPENDIX A................................................................................................................................................................. 35
9.1 ACRONYMS AND DEFINITIONS ........................................................................................................................................ 35
9.2 REFERENCES ............................................................................................................................................................... 35
10.0 APPENDIX B................................................................................................................................................................. 37
10.1 FIFO PROGRAMMING ................................................................................................................................................... 37
10.1.1 Programming Notes........................................................................................................................................... 37
10.1.2 Important User Defined Values.......................................................................................................................... 37
10.1.3 Current Default Configuration Values ................................................................................................................ 37
10.2 DEBUG FEATURES ........................................................................................................................................................ 38
10.2.1 Reading/Writing Tx FIFO and Rx FIFO Bypassing DMA / Link Logic ................................................................ 38
10.2.2 Implementation .................................................................................................................................................. 42
10.2.3 Direct Read of Internal Signals .......................................................................................................................... 42
Page ii
®
912-2000-031
Revision: 1.0

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QT82C881 전자부품, 판매, 대치품
FireLink 1394 OHCI
® 82C881
3.0 Signal Definitions
3.1 Terminology/Nomenclature Conventions
The "#" symbol at the end of a signal name indicates that the active, or asserted state occurs when the signal is at a low
voltage level. When "#" is not present after the signal name, the signal is asserted when at the high voltage level.
The terms assertion and negation are used extensively. This is done to avoid confusion when working with a mixture of active
low and active high signals. The term assert, or assertion indicates that a signal is active, independent of whether that level is
represented by a high or low voltage. The term negate, or negation indicates that a signal is inactive.
The tables in this section use several common abbreviations. Table 3-1 lists the mnemonics and their meanings. Note that
TTL/CMOS/Schmitt-trigger levels pertain to inputs only. Outputs are driven at CMOS levels.
Table 1. Signal Definitions Legend
Mnemonic
Description
Analog
CMOS
Dcdr
Ext
G
I
Int
I/O
Mux
NIC
O
OD
P
PD
PU
S
S/T/S
TTL
Analog-level compatible
CMOS-level compatible
Decoder
External
Ground
Input
Internal
Input/Output
Multiplexer
No Internal Connection
Output
Open drain
Power
Pull-down resistor
Pull-up resistor
Schmitt-trigger
Sustain Tristate
TTL-level compatible
912-2000-031
Revision: 1.0
Page 3

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QT82C881

FireLink 1394 OHCI Link Controller

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