J
Jan Behrend
Guest
Hello list,
the CY7C460A is an 8k deep, asynchronous FIFO :
ftp://ftp.mpifr-bonn.mpg.de:/outgoing/jbehrend/cy7c460a.pdf
What I want to do is to precisely keep track of the fill level. So I
need a counter which reacts to falling edges of two asynchronous signals
(/WR /RD).
This design is to be put into a Xilnix Coolrunner CPLD (Xpla3).
Has anyone done this before or can help how to go about this?
Cheers Jan Behrend
--
Jan Behrend
Max-Planck-Institut für Radioastronomie
Abteilung für Infrarot-Interferometrie Tel: (+49) 228 525 319
Auf dem Hügel 69 Fax: (+49) 228 525 411
D-53121 Bonn (Germany) jbehrend@mpifr-bonn.mpg.de
http://www.mpifr-bonn.mpg.de
PGP public key:
ftp://ftp.mpifr-bonn.mpg.de:/outgoing/jbehrend/jbehrend-gpg.asc
the CY7C460A is an 8k deep, asynchronous FIFO :
ftp://ftp.mpifr-bonn.mpg.de:/outgoing/jbehrend/cy7c460a.pdf
What I want to do is to precisely keep track of the fill level. So I
need a counter which reacts to falling edges of two asynchronous signals
(/WR /RD).
This design is to be put into a Xilnix Coolrunner CPLD (Xpla3).
Has anyone done this before or can help how to go about this?
Cheers Jan Behrend
--
Jan Behrend
Max-Planck-Institut für Radioastronomie
Abteilung für Infrarot-Interferometrie Tel: (+49) 228 525 319
Auf dem Hügel 69 Fax: (+49) 228 525 411
D-53121 Bonn (Germany) jbehrend@mpifr-bonn.mpg.de
http://www.mpifr-bonn.mpg.de
PGP public key:
ftp://ftp.mpifr-bonn.mpg.de:/outgoing/jbehrend/jbehrend-gpg.asc