TNETEL1200 Datasheet, PDF (17/20 Pages) Texas Instruments – EtherLoopE MODEM

TNETEL1200
EtherLoop™ MODEM
SPHS003D – FEBRUARY 1999 – REVISED JUNE 1999
CAPTURE RAM INTERFACE
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature
read cycle (see Figure 10)
NO.
1 ta
2 td
3 th
Read access time
Data delay time from RAMOEN
Data hold time after RAMOEN
PARAMETER
MIN MAX UNIT
45
ns
30 ns
0
ns
RAMADDR
2
3
RAMDAT
1
RAMOEN
RAMRWN
Figure 10. Read Cycle
write cycle (see Figure 11)
NO.
PARAMETER
1 tsu(ADDR) Address setup time
2 tsu(DATA) Data setup time to RAMRWN
3 tw
Pulse width, RAMRWN low
4 th
Data and address hold time after RAMRWN
2
4
RAMADDR
1
RAMDAT
MIN MAX UNIT
70
ns
12
ns
22
ns
30
ns
RAMOEN
RAMRWN
3
Figure 11. Write Cycle
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