1 - Al Kossow's Bitsavers

thus, to = [1/2(50) + 2 - 1] ns= 26 nstRP = [2(100) + 26 - 50 - 5 - 25 - 15 + 4 + 27] ns= 162 nsb. Refresh cyclestRP = 1.5(T) - tCLSH - tp832 - tAEH-REH - ttREH + tCH-RRL *tRP = [1.5(100) - 50 - 5 - 25 - 15 + 45] ns= 100 nsc. Access grant cyclestRP = T - tCH-RRH - ttREH + tCH-REL *tRP = (100 - 35 - 15 + 54) ns= 104 ns3. ALE to CLK relationshipALE low is triggered by the rising edge cP after AS goes low, which exceeds the minimum 10 nsspecification.4. Row address setup and hold timeThe row address setup time to the TMS4500A is given bytAV-AEL = T -tCLAV + to + tP74 + tpmin832where tCLAV = Clock low to address valid (MAX MC68000L10 Spec.)tPmin832 = Propagation delay (MIN 74AS832 Spec.)thus tAV-AEL = (100 - 55 + 26 + 4 + 1) ns= 76 nsThe row address setup time to the ORAM is given by:tASR = T - tCLAV + to + tp74 + tPmin832 - tRAV-MAV + tAEL-REL *thus tASR = (100 - 55 + 26 + 4 + 1 - 40 + 27) ns= 63 ns5. Oata valid to write enableThe data valid to write enable is dependent upon the tOOSL timing of the MC68000 when CAS.orW to the ORAMs is controlled as shown in Figure 1 A or Figure 1 B.co0,t:;C'CSE..o'too.5fI)Co0,t:;C'CSogQ.c.