Document Number: 001-55190 Rev. *L

Page 15 of 34

CYUSB302x

AC Timing Parameters

Storage Port Timing

The S0-Port and S1-Port support the MMC Specification Version 4.4 and SD Specification Version 3.0.

Table 9 lists the timing parameters for S0-Port and S1-Port of SD3.

Table 9. S-Port Timing Parameters[3]

Parameter

Description

Min

Max

Units

MMC-20

tSDIS CMD

Host input setup time for CMD

4.8

–

ns

tSDIS DAT

Host input setup time for DAT

4.8

–

ns

tSDIH CMD

Host input hold time for CMD

4.4

–

ns

tSDIH DAT

Host input hold time for DAT

4.4

–

ns

tSDOS CMD

Host output setup time for CMD

5

–

ns

tSDOS DAT

Host output setup time for DAT

5

–

ns

tSDOH CMD

Host output hold time for CMD

5

–

ns

tSDOH DAT

Host output hold time for DAT

5

–

ns

tSCLKR

Clock rise time

–

2

ns

tSCLKF

Clock fall time

–

2

ns

tSDCK

Clock cycle time

50

–

ns

SDFREQ

Clock frequency

20

MHz

tSDCLKOD

Clock duty cycle

40

60

%

MMC-26

tSDIS CMD

Host input setup time for CMD

10

–

ns

tSDIS DAT

Host input setup time for DAT

10

–

ns

tSDIH CMD

Host input hold time for CMD

9

–

ns

tSDIH DAT

Host input hold time for DAT

9

–

ns

tSDOS CMD

Host output setup time for CMD

3

–

ns

tSDOS DAT

Host output setup time for DAT

3

–

ns

tSDOH CMD

Host output hold time for CMD

3

–

ns

tSDOH DAT

Host output hold time for DAT

3

–

ns

tSCLKR

Clock rise time

–

2

ns

tSCLKF

Clock fall time

–

2

ns

tSDCK

Clock cycle time

38.5

–

ns

SDFREQ

Clock frequency

26

MHz

tSDCLKOD

Clock duty cycle

40

60

%

MC-HS

tSDIS CMD

Host input setup time for CMD

4

–

ns

tSDIS DAT

Host input setup time for DAT

4

–

ns

tSDIH CMD

Host input hold time for CMD

3

–

ns

tSDIH DAT

Host input hold time for DAT

3

–

ns

tSDOS CMD

Host output setup time for CMD

3

–

ns

tSDOS DAT

Host output setup time for DAT

3

–

ns