Power Measurements
1-36
ADSP-BF526 EZ-Board Evaluation System Manual
• Low-power mode capable ICs of the EZ-Board
• ADI SSM2603 audio codec (
U31
)
• Micron MT48H32M16-75 SDRAM memory (
U14
)
• Numonyx M58WR032KB parallel flash (
U16
)
• SST 25WF040 SPI flash memory (
U6
)
• Numonyx NAND02 flash memory (
U15
)
Some of the low-power modes are entered by inactivity on-chip select
lines. Consult the product data sheets for details.
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, VDDMEM, and SDRAM voltage domains. For
current draw measuments, the associated jumper (
P13
,
P11
,
P12
, or
P19
)
should be removed. Once the jumper is removed, the voltage across the
resistor can be measured using an oscilloscope. Once voltage is measured,
current can be calculated by dividing the voltage by 0.1. For the highest
accuracy, a differential probe should be used for measuring voltage across
the resistor.
For more information, see
“VDDINT Power Jumper (P13)” on
,
“VDDEXT Power Jumper (P11)” on page 2-25
, and
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