GL826 View Datasheet(PDF) - Genesys Logic
Part Name
Description
MFG CO.
'GL826' PDF : 43 Pages View PDF
GL826 USB 2.0 Multi-Slot Flash Card Reader Controller
4.9 AC Characteristics of Secure Digital / MultiMediaCard
fPP
tWL
tWH
Clock
Input
Output
tTHL
tTLH
tISU
tIH
tODLY
Figure 4.6－Timing Diagram of Secure Digital / MultiMediaCard
Table 4.10－AC Characteristics of SD/MMC Interface Timing (CL = 10 pF)
Symbol
Parameter
Clock Rate
Unit
fPP
Clock frequency Data Transfer Mode
48
24
20
15
MHz
fOD
Clock frequency Identification Mode
375
375
375
375
KHz
tWL
Clock low time (min)
7
20
22
30
ns
tWH
Clock high time (min)
7
20
22
30
ns
tTLH
Clock rise time (max)
3
3
3
3
ns
tTHL
Clock fall time (max)
3
3
3
3
ns
tISU
Input set-up time (min)
6
5
20
27
ns
tIH
Input hold time (min)
2
5
20
27
ns
tODLY Output delay time (max)
14
14
14
14
ns
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