Functional Overview
2-10
VX4792 User Manual
Waveform Memory
The waveform memory consists of 16 32K 8 SRAM chips for 256 K words of
16-bit word memory. Of these 16 bits, 12 bits are waveform data, 1 bit is
Marker 1, and 1 bit is Marker 2.
Since the system must read waveform memory out at high speed (250 MS/s), the
memory is partitioned into eight banks and read out with 8:1 multiplexing
(parallel-serial conversion). Therefore, the memory itself operates with a
1
/
8
clock.
Figure 2–8 shows the waveform memory configuration.
The waveform data length can be any multiple of eight points, from a minimum
of 64 points to a maximum of 256 K points. The maximum number of waveform
data points in a single sequence file is 256 K.
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Figure 2-8: Waveform Memory Organization
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