
5.04
8
IDT7203/7204/7205/7206 CMOS ASYNCHRONOUS FIFO
2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Figure 4. Full FlagTiming From Last Write to First Read
NOTE:
1.
EF
,
FF
and
HF
may change status during Retransmit, but flags will be valid at t
RTC
.
Figure 6. Retransmit
Figure 5. Empty Flag Timing From Last Read to First Write
R
W
FF
t
RFF
t
WFF
FIRST READ
IGNORED
WRITE
LAST WRITE
2661 drw 06
W
R
EF
t
WEF
t
REF
FIRST WRITE
IGNORED
READ
LAST READ
DATA
VALID
t
A
OUT
2661 drw 07
t
RTC
t
RT
t
RTS
RT
W
,
R
HF
,
EF
,
FF
t
RTR
FLAG VALID
2661 drw 08
RTF