Analog Devices ADZS-21569-EZKIT, Manual

Page: 29 / 37

Figure 3-7: Jumper Locations
S/PDIF Loopback (
JP8
)
The S/PDIF loopback jumper is used to connect the S/PDIF input and output signals together and bypass the two
RCA connectors.
Current Measurement (
P17, P18, P19, P20, and P21
)
The current measurement jumpers are used to measure the current draw of the VDD_INT, 1.5V, 3.3V,
VDD_EXT and USB0_VBUS respectively. The default is for the jumpers to be installed. To measure the current
draw, remove the jumper and measure the voltage across the precision resistor. The current can be calculated by
dividing the measured voltage by the 0.051 ohm resistor. For best results a differential probe should be used to meas-
ure the voltage across the resistor.
HADC (
P1
)
The HADC jumper is used to connect the HADC of the processor to various voltages on the board for monitoring.
Jumper Voltage
1 and 2 VDD_INT
3 and 4 1.8V
5 and 6 1.35V
7 and 8 MIC BIAS
LEDs
This section describes the on-board LEDs. The
LED Locations
figure shows the LED locations.
Jumpers
ADZS-21569-EZKIT Manual 3–13