參數(shù)資料
型號: AXDA1900DLT3C
元件分類: 微處理器
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 97/104頁
文件大?。?/td> 1769K
代理商: AXDA1900DLT3C
25175E—November 2002
AMD Athlon XP Processor Model 8 Data Sheet
Preliminary Information
Appendix B - Conventions and Abbreviations
83
Appendix B
Conventions and
Abbreviations
This section contains information about the conventions and
abbreviations used in this document.
Signals and Bits
Active-Low Signals—Signal names containing a pound sign,
such as SFILL#, indicate active-Low signals. They are
asserted in their Low-voltage state and negated in their
High-voltage state. When used in this context, High and Low
are written with an initial upper case letter.
Signal Ranges—In a range of signals, the highest and lowest
signal numbers are contained in brackets and separated by a
colon (for example, D[63:0]).
Reserved Bits and Signals—Signals or bus bits marked
reserved
must be driven inactive or left unconnected, as
indicated in the signal descriptions. These bits and signals
are reserved by AMD for future implementations. When
software reads registers with reserved bits, the reserved bits
must be masked. When software writes such registers, it
must first read the register and change only the
non-reserved bits before writing back to the register.
Three-State—In timing diagrams, signal ranges that are
high impedance are shown as a straight horizontal line
half-way between the high and low levels.
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