GL828 USB 2.0 SD/MMC Single Slot Card Reader Controller
SD Interface Timing (CL = 30PF)
SYMBOL PARAMETER
CLOCK RATE
UNIT
MHz
KHz
ns
fPP
fOD
Clock frequency Data Transfer Mode
48
375
7.4
7.4
3
20
375
22
22
3
15
375
30
30
3
6
375
80
80
3
Clock frequency Identification Mode
Clock low time (min)
tWL
tWH
tTLH
tTHL
tISU
tIH
Clock high time (min)
Clock rise time (max)
ns
ns
Clock fall time (max)
3
3
3
3
ns
Input set-up time (min)
Input hold time (min)
6.6
6.6
2
19.8
19.8
2
27
27
2
72
72
2
ns
ns
tODLY
Output delay time (max)
ns
6.6.3 Reset Timing
Trst
EXTRSTZ
Figure 6.5 - Timing Diagram of Reset width
Figure 6.6 - Timing Diagram of Power Good to USB command receive ready
©2000-2006 Genesys Logic Inc. - All rights reserved.
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