User's Manual

User manual of 3G SEP EVDO module
Page 35
Figure 10: SDIO timing
Single data rate (SDR) 1
Parameter Comments Minimum Maximum Unit
t(chrd) Command hold
2.5
ns
t(csurd) Command setup 6.0 ns
t(dhrd) data hold 2.5 ns
t(dsurd) Data setup 5.0 ns
t(pddwr) Propagation delay on data
write
-7 3 ns
t(pdcwr) Propagation delay on
command write
-7 3 ns
Double data rate (DDR) 2
Parameter Comments Minimum Maximum Unit
t(chrd) Command hold
1.5
ns
t(csurd) Command setup 12.3 ns
t(dhrd) data hold 1.5 ns
t(dsurd) Data setup 4.7 ns
t(pddwr) Propagation delay on data
write
0.8 8.7 ns