Hi, the DDR2+ SRAM parts are supposed to have ODT on the DATA lines... but I don't see it in the ibis model. I see it on the BWS and K/K* though.
Example from ddr2pb2l25_cy21xx.ibs (You can see where it says what the driving output impedance is, but the input impedance is unknown):
[Model Selector] DATAIO
|
DATAIO50_TT_1.5 DATAIO models (50ohms) at TT conditions - 1.5V I/O
DATAIO50_FF_1.5 DATAIO models (50ohms) at FF conditions - 1.5V I/O
DATAIO50_TSF_1.5 DATAIO models (50ohms) at Typ Slow Fast conditions- 1.5V I/O
DATAIO30_TT_1.5 DATAIO models (30ohms) at TT conditions - 1.5V I/O
DATAIO30_FF_1.5 DATAIO models (30ohms) at FF conditions - 1.5V I/O
DATAIO30_TSF_1.5 DATAIO models (30ohms) at Typ Slow Fast conditions- 1.5V I/O
DATAIO40_TT_1.5 DATAIO models (40ohms) at TT conditions - 1.5V I/O
DATAIO40_FF_1.5 DATAIO models (40ohms) at FF conditions - 1.5V I/O
DATAIO40_TSF_1.5 DATAIO models (40ohms) at Typ Slow Fast conditions- 1.5V I/O
DATAIO60_TT_1.5 DATAIO models (60ohms) at TT conditions - 1.5V I/O
DATAIO60_FF_1.5 DATAIO models (60ohms) at FF conditions - 1.5V I/O
DATAIO60_TSF_1.5 DATAIO models (60ohms) at Typ Slow Fast conditions- 1.5V I/O
DATAIO70_TT_1.5 DATAIO models (70ohms) at TT conditions - 1.5V I/O
DATAIO70_FF_1.5 DATAIO models (70ohms) at FF conditions - 1.5V I/O
Thank you.
