Summit Microelectronics - Applications Note 28

Tech Support: Applications Note 28
SMT4214 Expandable Four-Rail Supply TRAKKER™ Controller, Windows GUI and Configuration Register Descriptions

Application Note 28

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WINDOWS GUI USERS GUIDE AND CONFIGURATION REGISTER DESCRIPTIONS

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Help Menu
The Help menu can be used to view the SMT4214 Datasheet or this app note while prototyping with the Windows GUI. The 'About' selection will show the GUI version number. Please always go to the Summit web site (www.summitmicro.com) to check for the most current data sheet and GUI software.

Figure 2 - Help menu

Configuration Pull Down Menu
This menu has an option that will check for communications between the device and the PC. This selection should be tried first before changing any options. If the test passes, then all other options can be left in the default condition.

Figure 3 -Configuration Window

Setup Options

In the "File" pull-down menu, there are options to set the I2C clock frequency and delays before I2C Read and Write operations. The default settings work with most PCs, so these settings are only for circumstances where the PC cannot communicate successfully with the SMX3200 programming 'Dongle'. The "Auto-Read Configuration/Memory After Write" check box enables a checksum test which compares the GUI hex settings or file to the programmed device at the end of a Write sequence. It does this by performing a Read immediately following a Write.

Figure 4 Settings Option Window

Interfacing options.

The parallel Port Interfacing Window sets different options for programming the device. The 'Parallel Port Interfacing' should always be set to 'Dongle'. The 'Parallel Port Driver' can be changed for laptops if a problem is encountered in Win9X systems. The 'Switch MR# to Low For Write for Write Operations' check box is a safety feature that disables the MR# output from the 'Dongle' so that inadvertent writes do not occur. The MR# pin must be low and PWR_ON# pin must be high for initial write operations. An exception is for the Configuration Register 6 I2C Power On/Off function (Figure 10), MR# is not required.

Figure 5 Interfacing Options Window

Application Note 28

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NOTICE

SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. While the information in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission.

SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances.

Revision 1.0 - This document supersedes all previous versions and covers Status Tracking Codes up to 01 and Windows GUI revision 2.3.0 and later. Please check the Summit Microelectronics, Inc. web site at www.summitmicro.com for data sheet updates.

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