TIMING DIAGRAMS (cont’d)

RT

R,W

540203-13

NOTES:

2. FF, HF, and EF may change state during retransmit; but they will

Figure 19. Retransmit Timing

READ FROM

LAST VALID

LOCATION

XO

540203-15

WRITE TO LAST

AVAILABLE

LOCATION

W

R

Figure 20. Expansion-Out Timing

R

540203-16

XI

W

WRITE TO FIRST

AVAILABLE

LOCATION

READ FROM FIRST

VALID

LOCATION

Figure 21. Expansion-In Timing

CMOS 2048

× 9 Asynchronous FIFO

LH540203

15