2

dc1795af

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.

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

andSPI-compatibleserialcommunicationsformats.Italso

includesadvancedPLLdesignandsimulationcapabilities.

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

Figure 2. DC590 Jumper and Connector locations

 

 

JP6 

jumpers 

J4, ribbon 

cable 

connection 

to the 

DC1795 

JP5 jumpers 

JP4 

jumper 

J3, USB 

connection 

to PC