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045-0883R Datasheet(PDF) 32 Page - Analog Devices

No. de Pieza. 045-0883R
Descripción  ADSP-BF506F EZ-KIT Lite® Evaluation System Manual
Descarga  75 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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045-0883R Datasheet(HTML) 32 Page - Analog Devices

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VDDINT Programmable Regulator
1-12
ADSP-BF506F EZ-KIT Lite Evaluation System Manual
VDDINT Programmable Regulator
By default, the EZ-KIT Lite runs at 1.4V. The board contains a program-
mable regulator that supplies the processor’s core with a voltage between
1.1 and 1.4. The voltage is adjusted by writing to the AD5258 digital
potentiometer via the 2-wire interface (TWI) signals.Table 1-3 shows the
appropriate step and corresponding voltage values. For an example of
writing to the AD5258 potentiometer, refer to the POST example. For
more information on the acceptable voltage/frequency values, refer to the
ADSP-BF604/BF506(F) Blackfin Embedded Processor data sheet and
ADSP-BF50x Blackfin Processor Hardware Reference manual. For more
information about the digital potentiometer, refer to the AD5258 data
sheet.
Power Measurements
Several locations are provided for measuring the current draw from vari-
ous power planes. Precision 0.1 ohm shunt resistors are available on the
VDDINT, VDDEXT, and VDDFLASH voltage domains. For current
draw, the jumper is removed, voltage across the resistor can be measured
Table 1-3. Table 5. Voltage Values
Step Value
Voltage (V)
57
1.10
46
1.15
36
1.20
27
1.25
18
1.30
10
1.35
31.40


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