LH540202
TIMING DIAGRAMS (cont’d)
CMOS 1024 × 9 Asynchronous FIFO
LAST WRITE
R
W
t WFF
FF
FIRST READ
tRFF
Figure 12. Full Flag From Last Write to First Read
LAST READ
W
FIRST WRITE
R
t REF
t WEF
EF
NOTE: The Data Out pins (D0 - D8) are forced into a
high-impedance state whenever EF = LOW.
Figure 13. Empty Flag From Last Read to First Write
540202-6
540202-7
12