CMOS 8192 × 9 Asynchronous FIFO
TIMING DIAGRAMS (cont’d)
LH540205
HALF-FULL
OR LESS
W
R
HF
MORE THAN
HALF-FULL
t WHF
HALF-FULL
OR LESS
tRHF
Figure 17. Half-Full Flag Timing
tRT
RT
tRTR
R,W
NOTES:
1. tRTC = tRT + tRTR.
2. FF, HF, and EF may change state during retransmit; but they will
become valid by tRTC.
Figure 18. Retransmit Timing
540205-12
540205-13
15