ADP1864AUJZ-R7 datasheet(46/75 Pages) AD

46 / 75 page

Jumpers

2-12

ADSP-BF506F EZ-KIT Lite Evaluation System Manual

Voltage Reference Select Jumper (JP2)

The voltage reference select jumper (JP2) selects between a 2.5V on-chip

reference and an external voltage reference. When the jumper is installed

on positions 2 and 3, the on-chip 2.5V reference is used. When the

jumper is installed on positions 1 and 2, an external reference can be con-

nected to the ADC through the DCAPA and DCAPB signals (see “ADC

Voltage Reference (JP6)” on page 2-13). By default, JP2 is installed on

positions 2 and 3.

VDDEXT Power Jumper (JP3)

The VDDEXT power jumper (JP3) is used to measure the processor’s I/O

voltage and current. By default, JP3 is ON, and the current flows through

the two-pin IDC header. To measure power, remove the jumper on JP3

and measure the voltage across the precision resistor and resistance value.

For more information, refer to “Power Measurements” on page 1-12.

VDDINT Power Jumper (JP4)

The VDDINT power jumper (JP4) is used to measure the processor’s core

voltage and current. By default, JP4 is ON, and the current flows through

the two-pin IDC header. To measure power, remove the jumper on JP4

and measure the voltage across the precision resistor and resistance value.

For more information, refer to “Power Measurements” on page 1-12.

VDDFLASH Power Jumper (JP5)

The VDDFLASH power jumper (JP5) is used to measure the internal par-

allel flash voltage and current. By default, JP5 is ON, and the current flows

through the two-pin IDC header. To measure power, remove the jumper

on JP5 and measure the voltage across the precision resistor and resistance

value. For more information, refer to “Power Measurements” on

page 1-12.

ADP1864AUJZ-R7 датащи(PDF) 46 Page - Analog Devices