Achronix ACE Version 5.0 User Manual
Page 58
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Chapter 3. Concepts
Read Pointer Sync Stage
Depth
Y
The rdptr sync stages parameter defines the
number of stages used in the Read Pointer
Synchonizer circuit that synchronizes the Read
Pointer to the wrclk clock domain. When the FIFO
is in Dual Clock mode, the output of the
synchonized Read Pointer is compared to the Write
Pointer to generate the empty and almost empty
flags.
Write Enable Active-High
Y
When this is enabled, the write enable (wren) pin is
an active-high. Otherwise, the write enable pin
will be active-low.
Read Enable Active-High
Y
When this is enabled, the read enable (rden) pin is
an active-high. Otherwise, the read enable pin will
be active-low.
UG001 Rev. 5.0 - 5th December 2012
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