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參數(shù)資料
| 型號： | 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)： | 86/102頁 |
| 文件大小： | 3049K |
| 代理商： | SDC2800DUT3D |
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72
Pin Descriptions
Chapter 10
AMD Sempron Processor Model 10 with 256K L2 Cache Data Sheet
31994A—1August 2004
INTR Pin
INTR is an input from the system that causes the processor to
start an interrupt acknowledge transaction that fetches the
8-bit interrupt vector and starts execution at that location.
JTAG Pins
TCK, TMS, TDI, TRST#, and TDO are the JTAG interface.
Connect these pins directly to the motherboard debug
connector. Pull TDI, TCK, TMS, and TRST# up to VCC_CORE with
pullup resistors.
K7CLKOUT and
K7CLKOUT# Pins
K7CLKOUT and K7CLKOUT# are each run for two to three
inches and then terminated with a resistor pair: 100 ohms to
VCC_CORE and 100 ohms to VSS. The effective termination
resistance and voltage are 50 ohms and VCC_CORE /2.
Key Pins
These 16 locations are for processor type keying for forwards
and backwards compatibility (G7, G9, G15, G17, G23, G25, N7,
Q7, Y7, AA7, AG7, AG9, AG15, AG17, AG27, and AG29).
Motherboard designers should treat key pins like NC (No
Connect) pins. A socket designer has the option of creating a
top mold piece that allows PGA key pins only where designated.
However, sockets that populate all 16 key pins must be allowed,
so the motherboard must always provide for pins at all key pin
locations.
See “NC Pins“ for more information.
NC Pins
The motherboard should provide a plated hole for an NC pin.
The pin hole should not be electrically connected to anything.
NMI Pin
NMI is an input from the system that causes a non-maskable
interrupt.
PGA Orientation Pins
No pin is present at pin locations A1 and AN1. Motherboard
designers should not allow for a PGA socket pin at these
locations.
For more information, see the AMD Athlon Processor-Based
Motherboard Design Guide, order# 24363.
PLL Bypass and Test
Pins
PLLTES T #, PLLBY PA S S #, PLL M O N1, PLLMON 2,
PLLBYPASSCLK, and PLLBYPASSCLK# are the PLL bypass
and test interface. This interface is tied disabled on the
motherboard. All six pin signals are routed to the debug
connector. All four processor inputs (PLLTEST#, PLLBYPASS#,
PLLMON1, and PLLMON2) are tied to VCC_CORE with pullup
resistors.
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