adl5336 Analog Devices, Inc., adl5336 Datasheet - Page 28

• Manufacturer Part Number: adl5336
• Description: Cascadable If Vgas With Programmable Rms Detectors
• Manufacturer: Analog Devices, Inc.

ADL5336
EVALUATION BOARD CONTROL SOFTWARE
The
port on a PC. The parallel port is programmed via the
evaluation software. This software controls the following:
•
•
•
For information about the register map, see Table 5, Table 6,
Table 7, and Table 8. For information about SPI port timing and
control, see Figure 2 and Figure 3.
After the software is downloaded and installed, start the basic user
interface to program the maximum gains, setpoints, and the input
of VGA2, see Figure 73.
To program the setpoints of each VGA, click on the respective pull-
down menu of the desired VGA under RMS Out (mVrms/dBV),
select the desired setpoint, and click Write Bits.
To program the maximum gain of each VGA, click on the respective
pull-down menu of the desired VGA under the VGA 1 Max
Gain (dB)/VGA 2 Max Gain (dB), select the desired maximum
gain, and click Write Bits.
When the user clicks Write Bits, a write operation executes,
immediately followed by a read operation. The updated
information is displayed in the VGA1 Current State and VGA2
Current State fields. The gain displayed does not represent the
analog VGA gain, only the digital maximum gain.
On VGA2, the user can switch to either Input A or Input B by
selecting the slider switch, VGA 2 Switch.
ADL5336
The setpoints of VGA1 and VGA2
The maximum gains of VGA1 and VGA2
The input control switch of VGA2
evaluation board is controlled through the parallel
ADL5336
Rev. A | Page 28 of 32
Because the speed of the parallel port varies from PC to PC, the
Clock Stretch function can be used to change the effective frequency
of the CLK line. The CLK line has a scalar range from 1 to 10;
10 is the fastest speed, and 1 is the slowest.
Figure 73.
ADL5336
Software Screen Capture