參數(shù)資料
型號: AMD ATHLON
廠商: Advanced Micro Devices, Inc.
英文描述: 32-Bit Microprocessor with 3D Multimedia Performance and Digital Video(32位微處理器帶3D多媒體性能和數(shù)字視頻)
中文描述: 32三維多媒體性能和數(shù)字視頻比特微處理器(32位微處理器帶三維多媒體性能和數(shù)字視頻)
文件頁數(shù): 100/106頁
文件大小: 1740K
代理商: AMD ATHLON
86
Conventions, Abbreviations, and References
Appendix A
AMD Athlon
Processor Data Sheet
21016G/0
December 1999
Preliminary Information
n
Invalid and Don
t-Care
In timing diagrams, signal ranges
that are invalid or don't-care are filled with a screen
pattern.
Data Terminology
The following list defines data terminology:
n
Quantities
A
word
is two bytes (16 bits)
A
doubleword
is four bytes (32 bits)
A
quadword
is eight bytes (64 bits)
An AMD Athlon
processor cache line is eight
quadwords (64 bytes)
Addressing
Memory is addressed as a series of bytes on
eight-byte (64-bit) boundaries in which each byte can be
separately enabled.
Abbreviations
The following notation is used for bits and
bytes:
Kilo (K, as in 4-Kbyte page)
Mega (M, as in 4 Mbits/sec)
Giga (G, as in 4 Gbytes of memory space)
See Table 33 for more abbreviations.
Little-Endian Convention
The byte with the address
xx...xx00 is in the least-significant byte position (little end).
In byte diagrams, bit positions are numbered from right to
left
the little end is on the right and the big end is on the
left. Data structure diagrams in memory show low addresses
at the bottom and high addresses at the top. When data
items are aligned, bit notation on a 64-bit data bus maps
directly to bit notation in 64-bit-wide memory. Because byte
addresses increase from right to left, strings appear in
reverse order when illustrated.
Bit Ranges
In text, bit ranges are shown with a dash (for
example, bits 9
1). When accompanied by a signal or bus
name, the highest and lowest bit numbers are contained in
brackets and separated by a colon (for example, AD[31:0]).
Bit Values
Bits can either be set to 1 or cleared to 0.
Hexadecimal and Binary Numbers
Unless the context
makes interpretation clear, hexadecimal numbers are
followed by an h and binary numbers are followed by a b.
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