參數資料
型號: 24267A
英文描述: Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors
中文描述: “AMD的K6E家庭”,“嵌入”,“處理器的AMD PowerNow???技術平臺設計指南應用指南“
文件頁數: 30/50頁
文件大?。?/td> 957K
代理商: 24267A
24
Hardware Implementation
AMD PowerNow! Technology Platform Design Guide for Embedded Processors
24267A/0—December 2000
Preliminary Information
VID[4:0] Modification for Maximum BF[2:0] Boot Option
The following section discusses a step-by-step process for
modifying a design to accommodate the recommended
maximum BF[2:0] boot option using the Maxim 1711 DC/DC
voltage regulator. An assisting diagram is provided in Figure 5
on page 25.
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Disconnect processor output pins: AH32, AN35, R34, E25,
and E17 from any current destinations
Leave processor output pins AN35 and E25 unconnected
Connect the Maxim 1711 DAC inputs D4 (pin16) and D0 (pin
20) directly to GND
Add a 74LVC08 quadruple 2-input AND gate, connecting
V
CC
(pin 14) to +3.3V and GND (pin 7) to GND.
Connect processor VID[4] (pin E17) to 74LVC08 pin 1
Connect processor VID[2] (pin R34) to 74LVC08 pin 4
Connect processor VID[0] (pin AH32) to 74LVC08 pin 10
Add 10K-Ohm pull-up resistors on 74LVC08 pins 1, 4, 10 to
+3.3V
Connect SPWRGD (system power good) to 74LVC08 pins 2,
5, and 9
Connect 74LVC08 pin 8 to Maxim 1711 DAC input D[1] (pin
19)
Connect 74LVC08 pin 6 to Maxim 1711 DAC input D[2] (pin
18)
Connect 74LVC08 pin 3 to Maxim 1711 DAC input D[3] (pin
17)
Connect 74LVC08 pins 12 and 13 to GND to prevent the
unused inputs from floating
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