DS2423 MEMORY FUNCTION FLOW CHART Figure 7 cont’d From Figure 7 To Figure 7 55H F0H 1st Part N 3rd Part Copy Read Scratchpad Memory N Y Y Master TX 1) Master TX 1) TA1 (T7:T0) TA1 (T7:T0) Master TX 1) Master TX 1) TA2 (T15:T8) TA1 (T7:T0) Master TX 1) DS2423 sets Memory E/S Byte Address = (T15:T0) Authorization N Master RX Data Byte 1) Code Match? from Memory Address DS2423 Incre- Y ments Address AA = 1 Counter 2) Master DS2423 Copies Scratchpad TX Reset? Data to Memory Y N N End of Master 1) Master 1) Memory? RX "1"s RX "1"s Copying Y 1) Finished N N Master Master RX "0"s TX Reset? Y DS2423 TX "0" 1) Y 2) Master Y TX Reset? N 1) DS2423 TX "1" 2) Master TX Reset? N Y To Figure 7 1) To be transmitted or received at Overdrive speed if OD = 1. From Figure 7 1st Part Not Recommended for New Design 2) Reset Pulse to be transmitted at Overdrive speed if OD = 1. 3rd Part Reset Pulse to be transmitted at normal speed if OD = 0 or if the DS2423 is to be reset from Overdrive speed to regular speed. 10 of 25
