參數(shù)資料
型號(hào): SDC2800DUT3D
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: 2000 MHz, MICROPROCESSOR, CPGA453
封裝: OPGA-453
文件頁數(shù): 82/102頁
文件大小: 3049K
代理商: SDC2800DUT3D
Chapter 10
Pin Descriptions
68
31994A—1August 2004
AMD Sempron Processor Model 10 with 256K L2 Cache Data Sheet
10.3
Detailed Pin Descriptions
The information in this section pertains to Table 20 on page 60.
A20M# Pin
A20M# is an input from the system used to simulate address
wrap-around in the 20-bit 8086.
AMD Pin
AMD Socket A processors do not implement a pin at location
AH6. All Socket A designs must have a top plate or cover that
blocks this pin location. When the cover plate blocks this
location, a non-AMD part (e.g., PGA370) does not fit into the
socket. However, socket manufacturers are allowed to have a
contact loaded in the AH6 position. Therefore, motherboard
socket design should account for the possibility that a contact
could be loaded in this position.
AMD Athlon
System Bus Pins
See the AM D At h l on a n d AM D D u r o n System B u s
Specification, order# 21902 for information about the system
bus pins — PROCRDY, PWROK, RESET#, SADDIN[14:2]#,
SA DDIN CL K#, SAD DOUT[ 14:2] #, S ADD OUTC LK#,
SDATA[63 :0]#, SDATAINCLK[3:0]#, SDATAINVAL ID#,
SDATAOUTCLK[3:0]#, SDATAOUTVALID#, SFILLVALID#.
Analog Pin
Treat this pin as a NC.
APIC Pins, PICCLK,
PICD[1:0]#
The Advanced Programmable Interrupt Controller (APIC) is a
feature that provides a flexible and expandable means of
delivering interrupts in a system using an AMD processor. The
pins, PICD[1:0], are the bidirectional message-passing signals
used for the APIC and are driven to the Southbridge or a
dedicated I/O APIC. The pin, PICCLK, must be driven with a
valid clock input.
Refer to “VCC_2.5V Generation Circuit” found in the section,
“Motherboard Required Circuits,” of the AMD Athlon
Processor Motherboard Design Guide, order# 24363 for the
required supporting circuitry.
For more information, see Table 15, “APIC Pin AC and DC
CLKFWDRST Pin
CLKFWDRST resets clock-forward circuitry for both the system
and processor.
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