參數(shù)資料
型號(hào)： 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(yè)數(shù)： 81/106頁(yè)
文件大小： 1740K
代理商： AMD ATHLON
Chapter 14
Electrical Data
67
21016G/0
—
December 1999
AMD Athlon
Processor Data Sheet
Preliminary Information
14
Electrical Data
14.1
The AMD Athlon
System Bus
The AMD Athlon system bus architecture is designed to deliver
unprecedented data movement bandwidth for next-generation
x86 platforms, as well as the high performance required by
enterprise-class application software. The system bus
architecture consists of three high-speed channels (a
unidirectional processor request channel, a unidirectional
snoop channel, and a 72-bit bidirectional data channel,
including 8-bit error code correction [ECC] protection),
source-synchronous clocking, and a packet-based protocol. In
addition, the system bus supports several control, clock, and
legacy signals. The interface signals use a HSTL-like,
low-voltage swing signaling technology contained within the
Slot A mechanical connector, which is mechanically compatible
with the industry-standard SC242 connector.
14.2
Signal Groupings
The AMD Athlon system bus is the processor connection to a
memory and I/O controller or a shared multiprocessor
controller. The system interface can be broken down into four
signal groups plus power and ground connections. These groups
are listed in Table 22 on page 68. The first group connects the
AMD Athlon processor to the system controller and uses a
source-synchronous, or clock-forwarded clocking scheme. Using
this technique, the clocks and data travel in the same direction
down the transmission line and arrive together. The second
group connects the AMD Athlon processor to the peripheral
bus controller, but unlike the system controller group, these
signals do not use a source-synchronous scheme. The third
group is the control group, which contains signals that interface
with the power supply of the system. The fourth group contains
the system clock. This is the input clock for the AMD Athlon
processor and is the source for all other clocks generated by the
AMD Athlon processor module.
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