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SNAU210–March 2017
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Connecting Reference Pro
Appendix E
SNAU210–March 2017
Connecting Reference Pro
1. To use Reference Pro, change the configuration for SE or differential connection as shown on
Appendix D.
2. Change jumper position on Reference Pro, connect middle pin of OE header to Vdd.
Figure 16. Reference Pro Output Enable Header
Figure 17. LMX2594EVM Setup With Reference Pro
The LMK61PD0A2 has several control pins dedicated for control of output format, output frequency, and
output enable control. These control pins can be configured through the jumpers shown in Table 5 and
Table 6.
Jumpers FS1, FS0, OS, and OE can be used to configure the corresponding control pin to either high or
low state by strapping the center pin to VDD position (tie pins 2-3) or GND position (tie pins 1-2),
respectively. Connections from the VDD position to the device supply or from the GND position to the
ground plane are connected by 1.5-kΩ resistors.
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