timing overview

docs/.~lock.Timings.ods#

@@ -0,0 +1 @@
+Jonny Schlemminger,jonny,ubuntu,08.04.2014 14:51,file:///home/jonny/.config/libreoffice/4;

dram/src/core/configuration/TimingConfiguration.h

@@ -26,27 +26,29 @@ struct TimingConfiguration
 	{
 	}
 
-	unsigned int numberOfBanks;
-
 	sc_time clk;
 	sc_time tRP;		//precharge-time (pre -> act same bank)
 	sc_time tRAS;		//active-time (act -> pre same bank)
 	sc_time tRC;		//RAS-cycle-time (min time bw 2 succesive ACT to same bank)
-	sc_time tRRD;		//(min time bw 2 succesive ACT to different banks)
+	sc_time tCCD_S;		//TODO: relevant? max(bl, tCCD)
+	sc_time tCCD_L;
+	sc_time tRRD_S;		//min time bw 2 succesive ACT to different banks (different bank group)
+	sc_time tRRD_L;		//.. (same bank group)
 	sc_time tRCD;		//act -> read/write
-	sc_time tNAW;		//two activate window
+	sc_time tNAW;		//n activate window
 	sc_time tRL;		//read latency (read command start to data strobe)
 	sc_time tWL;		//write latency
 	sc_time tWR;		//write recovery (write to precharge)
-	sc_time tWTR;		//write to read
+	sc_time tWTR_S;		//write to read (different bank group)
+	sc_time tWTR_L;		//.. (same bank group)
 	sc_time tCKESR;		//min time in sref
-	sc_time tCKE;
-	sc_time tXP;
-	sc_time tXSR;
-	sc_time tAL;
+	sc_time tCKE;		//min time in pdna or pdnp
+	sc_time tXP;		//min delay to row access command after pdnpx pdnax
+	sc_time tXSR;		//min delay to row access command after srefx
+	sc_time tAL;		//additive delay (delayed execution in dram)
 
-	sc_time tRFC;
-	sc_time tREFI;
+	sc_time tRFC;		//min ref->act delay
+	sc_time tREFI;		//auto refresh must be issued at an average periodic interval tREFI
 
 	std::vector<RefreshTiming> refreshTimings;