參數(shù)資料
型號: A1400AMT3C
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 1400 MHz, MICROPROCESSOR, CPGA453
封裝: STAGGERED, CERAMIC, PGA-453
文件頁數(shù): 80/90頁
文件大?。?/td> 1497K
代理商: A1400AMT3C
Chapter 10
Pin Descriptions
67
23792I—June 2001
AMD Athlon Processor Model 4 Data Sheet
Preliminary Information
SYSVREFMODE Pin
SYSVREFMODE (AA5) is Low to ensure that the external
VREFSYS voltage is the actual voltage used by the input
buffers and that no scaling occurs internally between the
VREFSYS voltage and the input threshold. This pin is tied Low
with a pulldown resistor.
VCCA Pin
VCCA is the processor PLL supply. For information about the
page 25 and the AMD Athlon Processor-Based Motherboard
Design Guide, order# 24363.
VID[4:0] Pins
The VID[4:0] (Voltage Identification) outputs are used to
dictate the VCC_CORE voltage level. The VID[4:0] pins are
strapped to ground or left unconnected on the processor’s
package. The VID[4:0] pins are pulled-up on the motherboard
and used by the VCC_CORE DC/DC converter.
These voltage ID values are defined Table 19 on page 68.
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