Conexant Bt8960, Hardware User'S Manual

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Bt8960EVM Hardware User’s Guide
Bt8960
Important Information Bt8960EVM Hardware User’s Guide
2
Conexant
100188B
Conexant Proprietary and Confidential
User Interface Program
A user interface program (UIP) is also provided by Brooktree to perform for more
advanced monitoring and testing of the Bt8960EVM. This program runs on a
standard IBM compatible personal computer (PC) and interfaces from the PC to
the Bt8960EVM through two RS-232 serial communication ports. Please see the
User Interface Program (UIP) User’s Guide (UGHDSL_1A) for additional
information.
Data Rate
The Bt8960EVM has been designed to operate at a data rate of 288 Kbits per
second. It can be modified to run at other data rates supported by the Bt8960
device. Please see the Bt8960 datasheet or the Interconnection Information
application note for more information on how to modify the line card for different
data rates. Each line card in the system also contains a line card ID which is set by
five 0 ohm resistors, R39 to R43 (see the 8960EVM line card schematic in
appendix A). These resistors may need to be modified so the EVM software is
configured for the correct data rate. The line card ID is defined according to
Table 1 .
Ordering Information
Table 1 Line Card ID Definition
R39 to R43 (binary)
Data Rate (kbps)
Center Range of Operation
00000 (default) 288 220 to 352
00001 416 352 and up
00010 160 Up to 220
All Others Reserved Reserved
Order Code Bt8960EVM
Description The Bt8960 evaluation system can be ordered using the order code listed
above. This order includes both the local (HTU-C/LTU) and remote
(HTU-R/NTU) units needed to perform full-duplex data transmission over a
twisted pair of wire. A power supply is also included for your convenience.
For a full list of the items shipped with the Bt8960EVM order, please see the
Bt8960EVM Contents List.