SI4113-EVB Silicon Laboratories Inc, SI4113-EVB Datasheet - Page 9

• Manufacturer Part Number: SI4113-EVB
• Description: BOARD EVALUATION FOR SI4113
• Manufacturer: Silicon Laboratories Inc
• Type: Synthesizerr

Specifications of SI4113-EVB

• Contents: Board and CD-ROM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SI4113
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The loop executes sequentially when the green Loop
button is selected and repeats until the red Stop button
is pressed. There are four steps. In the first, the register
selected in the First Register pull-down box is written
with the value in the First Value box. The GPO
hardware signal on the evaluation board is set high or
low dependent on the First Utility switch setting.
The second step is a delay, entered in milliseconds. The
third and fourth steps are set similarly to the first and
second.
The configuration shown in Figure 9 could be used to
measure channel-to-channel settling time. Steps 1 and
2 set the N counter of the RF1 synthesizer to a given
frequency, set the GPO utility signal low, and then
pause for 100 milliseconds. Steps 3 and 4 then
reprogram the N counter for a different frequency, set
the GPO utility port high to trigger measurement
equipment, and delay for another 100 ms. The loop
repeats so that the measurement equipment can
average over several channel changes. In this
measurement, the evaluation board should have J2 and
JP3 jumpered so that the GPO signal is routed to the
PWDNB test point for connection to the test equipment
trigger port and also to the PWDNB pin of the
synthesizer.
The Open Loop... menu selection invokes the window
shown in Figure 10. By setting the VCO to operate at its
minimum and maximum frequencies, the center
frequency can be calculated by averaging these two
extremes.
Selecting Device ID... causes a pop-up window to
appear with an internal device code displayed.
Selecting Set Parallel Port allows the user to select
either LPT1 or LPT2 to control the evaluation board.
Figure 10. Open Loop Menu
Preliminary Rev. 0.5
Help Menu
The version number of the software appears in Help
About.
Contact Silicon Laboratories directly for evaluation
software support.
Si4133/33G-EVB
9