Visible to Intel only — GUID: iga1405983549417
Ixiasoft
Visible to Intel only — GUID: iga1405983549417
Ixiasoft
34.3.2. Timing Page
The Timing page allows designers to enter the timing specifications of the Tri-State SDRAM chip(s) used. The correct values are available in the manufacturer’s data sheet for the target SDRAM.
Parameter | GUI Legal Values | Default Values | Units |
---|---|---|---|
CAS latency cycles |
1, 2, 3 |
3 |
Cycles |
Initialization refresh cycles |
1:8 |
2 |
Cycles |
Issue one refresh command every |
0.0:156.25 |
15.625 |
us |
Delay after power up, before initialization |
0.0:999.0 |
100.00 |
us |
Duration of refresh command (t_rfc) |
0.0:700.0 |
70.0 |
ns |
Duration of precharge command (t_rp) |
0.0:200.0 |
20.0 |
ns |
ACTIVE to READ or WRITE delay (t_rcd) |
0.0:200.0 |
20.0 |
ns |
Access time (t_ac) |
0.0:999.0 |
5.5 |
ns |
Write recovery time (t_wr, no auto precharge) |
0.0:140.0 |
14.0 |
ns |