5.14

13

IDT72251 CMOS SyncFIFO

™

8192 x 9

COMMERCIAL TEMPERATURE RANGES

WCLK

WEN1

WEN2

(If Applicable)

PAF

RCLK

REN1,

REN2

(4)

(1)

Full - (m+1) words in FIFO

2655 drw 12

NOTES:

1. PAF offset = m.

2. 8192 - m words in FIFO IDT72251.

PAF to change during that clock cycle. If the time between the rising

PAF may not change state until the next WCLK rising edge.

4. If a write is performed on this rising edge of the write clock, there will be Full - (m-1) words in the FIFO when

PAF goes LOW.

Figure 10. Programmable Full Flag Timing