PE4312
Product Specification
Evaluation Kit
Figure 25. Evaluation Board Layout
The Digital Step Attenuator Evaluation Board
(EVB) was designed to ease customer evaluation
of the PE4312 Digital Step Attenuator. PE4312
EVB supports Direct Parallel, Latched Parallel, and
Serial programming modes.
Evaluation Kit Setup
Connect the EVB with the USB dongle board and
USB cable as shown in Figure 24.
Figure 24. Evaluation Kit
PRT-10505
Latched Parallel Programming Procedure
For automated Latched Parallel programming,
connect the USB dongle board and cable that is
provided with the Evaluation Kit (EVK) from the
USB port of the PC to the J1 header of the
PE4312 EVB, and set the D1–D6 SP3T switches
to the EXTERNAL position. Position the Parallel/
Serial (P/S) select switch to the Parallel (or left)
position. The evaluation software is written to
operate the DSA in Parallel mode. Ensure that the
software GUI is set to Latched Parallel mode. Use
the software GUI to enable the desired attenuation
state. The software GUI automatically programs
the DSA each time an attenuation state is
enabled.
Direct Parallel Programming Procedure
Direct Parallel programming is suitable for manual
operation without software programming. For
manual Direct Parallel programming, position the
Parallel/Serial (P/S) select switch to the Parallel (or
left) position. The LE mechanical programming
switch must be set to the HIGH position. Switches
D1–D6 are SP3T switches that enable the user to
manually program the parallel bits. When D1–D6
are toggled to the HIGH position, logic high is
presented to the parallel input. When toggled to the
LOW position, logic low is presented to the parallel
input. Setting D1–D6 to the EXTERNAL position
presents as OPEN, which is set for software
programming of Latched Parallel and Serial mode.
Table 5 depicts the parallel programming truth
table.
Serial Programming Procedure
For automated Serial programming, connect the
USB dongle board and cable that is provided with
the Evaluation Kit (EVK) from the USB port of the
PC to the J1 header of the PE4312 EVB, and set
the D1–D6 SP3T switches to the EXTERNAL
position. Position the Parallel/Serial (P/S) select
switch to the Serial (or right) position. The
evaluation software is written to operate the DSA
in Serial mode. Ensure that the software GUI is
set to Serial mode. Use the software GUI to
enable the desired attenuation state. The software
GUI automatically programs the DSA each time
an attenuation state is enabled.
©2017 Peregrine Semiconductor Corp. All rights reserved.
Document No. DOC-81482-1 │ UltraCMOS® RFIC Solutions
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