Sundance FC203A User Manual
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Page 4 of 4
Revision 0.5
Sundance Digital Signal Processing Inc.
4790 Caughlin Parkway 233, Reno, NV 89519-0907, U.S.A.
Tel: +1 (775) 827-3103, Fax: +1 (775) 827-3664, email:
www.sundancedsp.com
1. GENERAL
DESCRIPTION
The FC203A - Power Spectrum Extraction/Exchange FPGA module is an efficient
implementation of a general table “chop/swap” operation, specifically designed for use in front
of the FC203B Power Spectrum Interleave module. A control word defines how many input
samples are to be passed through to the output, and the low-order half of those samples are
passed to one output while the high-order samples are passed to the second output. The high/low
division may optionally be exchanged by asserting a bit in the control word.
In order for it to be used within a Diamond/FPGA system, the I/O interfaces are ‘standardized’ to
the model described by Diamond
1
.
Figure 1 – FC203A Component Diagram
1
See:
http://www.3l.com/Diamond/Documentation/Diamond.pdf
(Chapter 28, “FPGA Tasks”)
16
FC203A
F0_OUT
I0_IN
CTRL_IN
Q0_IN
I1_IN
Q1_IN
F1_OUT
STATUS_OUT
64