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Document Number: 002-14949 Rev. *G
Page 96 of 113
PRELIMINARY
CYW43353
18.1.2 SDIO High-Speed Mode Timing
SDIO high-speed mode timing is shown by the combination of
and
.
Figure 33. SDIO Bus Timing (High-Speed Mode)
Table 45. SDIO Bus Timing
1
Parameters (High-Speed Mode)
1.
Timing is based on CL
40pF load on CMD and Data.
Parameter
Symbol
Minimum
Typical
Maximum
Unit
SDIO CLK (all values are referred to minimum VIH and maximum VIL
2
)
2.
Min. (Vih) = 0.7 × VDDIO and max (Vil) = 0.2 × VDDIO.
Frequency – Data Transfer Mode
fPP
0
–
50
MHz
Frequency – Identification Mode
fOD
0
–
400
kHz
Clock low time
tWL
7
–
–
ns
Clock high time
tWH
7
–
–
ns
Clock rise time
tTLH
–
–
3
ns
Clock fall time
tTHL
–
–
3
ns
Inputs: CMD, DAT (referenced to CLK)
Input setup time
tISU
6
–
–
ns
Input hold time
tIH
2
–
–
ns
Outputs: CMD, DAT (referenced to CLK)
Output delay time – Data Transfer Mode
tODLY
–
–
14
ns
Output hold time
tOH
2.5
–
–
ns
Total system capacitance (each line)
CL
–
–
40
pF
t
WL
t
WH
f
PP
t
THL
t
ISU
t
TLH
t
IH
t
ODLY
Input
Output
50% VDD
t
OH
SDIO_CLK