User's Manual

Universal Scientific Industrial Corp.
Doc No. Rev
1.4
Date.
2011/12/09
Page
14
Description
Product Specification – WM-G-MR-09-Ref2
SDIO Protocol Timing Diagram – High Speed Mode
SDIO Timing Data
Symbol Parameter Condition Min Typ Max Units
Fpp
Clock Frequency
Normal 0 -- 25 MHz
High Speed 0 -- 50 MHz
TWL
Clock Low Time
Normal 10 -- -- ns
High Speed 7 -- -- ns
TWH
Clock High Time
Normal 10 -- -- ns
High Speed 7 -- -- ns
TISU
Input Setup Time
Normal 5 -- -- ns
High Speed 6 -- --
TIH
Input Hold Time
Normal 5 -- -- ns
High Speed 2 -- --
TODLY
Output Delay Time
-- 0 -- 14 ns
TOH
Output Hold Time
Normal 2.5 -- -- ns
NOTE: Over full range of values specified in the Recommended Operating Condition unless
Otherwise specified.