Quick Start Procedure - Linear Technology DC1795A Demo Manual

DEMO MANUAL DC1795A

Quick start proceDure

The DC1795A is easy to set up to evaluate the performance
of the LTC6950. Follow the procedure below.
The DC590 and ClockWizard application are required to
control the DC1795A through a personal computer (PC).
DC590 ConFigurAtion
Place the DC590 jumpers in the following positions (refer
to Figure 2):
JP4: EE - Must be in the EN position.
JP5: ISO - ON must be selected.
JP5: SW - ON must be selected.
JP6: VCCIO - 3.3V or 5V must be selected. This sets
the SPI port to 3.3V or 5V operation. 3.3V operation is
recommended.
J4, ribbon
cable
connection
to the
DC1795
JP6
jumpers
2
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JP5 jumpers
Figure 2. DC590 Jumper and Connector locations
Connect the DC590 to one of your computer's USB ports
with the included USB cable.
CloCkWizArD instAllAtion
The ClockWizard software is used to communicate with
the LTC6950. It uses the DC590 to translate between USB
and SPI-compatible serial communications formats. It also
includes advanced PLL design and simulation capabilities.
The following are the ClockWizard system requirements:
• Windows Operating System: Windows XP, Windows
2003 Server, Windows Vista, Windows 7
• Microsoft .NET 3.5 SP1 or later
• Windows Installer 3.1 or later
• Linear Technology's DC590 hardware
J3, USB
connection
to PC
JP4
jumper
dc1795af