Analog Devices ADSP-BF592 EZ-KIT Lite, Manual

Page: 48 / 78

Jumpers
2-12 ADSP-BF592 EZ-KIT Lite Evaluation System Manual
Reset Jumper (JP1)
The reset jumper (
JP1
) selects between the 3.3V regulator and battery
voltage as a monitored input for the reset signal. When a jumper is on
positions 2 and 3 of
JP1
, the
BAT_P
signal is monitored, which is useful
when using the lithium ion battery. When a jumper is on positions 1
and 2 of
JP1
, the 3.3V regulator is monitored.
JP1
installed on positions 1
and 2 must be used when no battery is wired to connector
P3
(see “Battery
Connector (P3)” on page 2-20 ). The
SENSE2
input pin of the ADM13305
voltage reset supervisor is set up to drive the
RESET_3V
signal low when a
voltage of less than 3.16V is measured. By default,
JP1
is installed on
positions 1 and 2.
SPI Flash CS Enable Jumper (JP2)
The SPI flash CS enable jumper (
JP2
) connects the
SPI0_SEL2
signal to
SPI flash memory. By default,
JP1
is installed and SPI flash is connected.
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 1-17 .
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 1-17 .