National Semiconductor DS25CP104, User Manual

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DS25CP104EVK User Manual
SMBus Evaluation
Introduction :
The CP104 can be evaluated in the Pin Mode using the external pins, or in the SMBus
mode. The following section describes how to load and run the Analog Launch Pad from
National Semiconductor, a proprietary interface, used to access the SMBus registers of
the CP104. The 1
st
time the application is run on a PC, and only the 1
st
time, the
application file needs to be downloaded, extracted, and then the appropriate driver needs
to be enabled. Any time after that, on the same PC, you need only to setup the
CP104EVK and then proceed to using the Analog Launch Pad.
Loading and running the application file
•
Download the application file from
http://www.national.com/appinfo/lvds/ds25cp104evk.html
•
Place in any folder on your PC, and run the file by double clicking on the file
from Windows Explorer (or My Computer); this will extract the file and place it
in C:\Program Files\National Semiconductor Corp folder.
•
The Analog Launch Pad will now function only in the Demo mode.
•
The Analog Launch Pad is designed to function on Windows 98/2000/xp
Setup the CP104EVK
(When using the USB, power should be off to the CP104 and USB unplugged when
changing cables or changing the jumper pins.)
1. Install jumper pins as follows:
J21, SMBus Enable H Enables the SMBus
J4 inserted USB Controller Reset
J3 removed EEPROM write protect
J15, J16 removed S00 (SCL), S01 (SDA)
J18, J19 L Address
J24, J22 H Address
J20, J23 L
Table 8 . Jumpers on the CP104EVK for SMBus use
2. Configure the test setup as desired, examples are fig. 4 – fig. 7.
3. Supply 3.3 V Power to board.
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