CS2412 Amphion, CS2412 Datasheet - Page 4

• Manufacturer Part Number: CS2412
• Description: User-programmable Fft/ifft 1024-point Pipelined
• Manufacturer: Amphion

The core is capable of processing continuous data stream.
Loading the input data is performed under the control of
signal XBS. Signal XBS is asserted when the output signal
XBIP is de-asserted. It indicates the first data of the 1024-point
data block and the data is clocked in on the clock rising edge.
The rest of the 1023-points of data are loaded in the successive
1023 clock cycles in the natural order. When the last data is
loaded signal XBIP returns to LOW. Loading of the next data
Figure 4: Input/Output Functional Timing
4
CS2412
YBS
YAV
YSDC
XRE
XIM
CLK
XBS
XBIP
SDC
YRE
YIM
FUNCTIONAL OPERATION
1024-Point Pipelined FFT/IFFT
0
1
2
1023
2040 cycles
block can be started by asserting XBS at any time from the
next clock cycle after XBIP returns to LOW.
Signal YBS is asserted, when the first of the result data
appears on the output port. The rest of the result data will be
continuously clocked out in the following 1023 clock cycles.
Signal YAV will be asserted during the period of the result
being output. Figure 4 illustrates the functional timing of the
I / O signals.
0
1
n-1
n
0
n+1
1
n+2
2
n+3
3