OMAP-L137
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SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
6.13.3 MMC/SD Electrical Data/Timing
Table 6-34. Timing Requirements for MMC/SD Module
(see
Figure 6-27
and
Figure 6-29
)
No.
PARAMETER
MIN
MAX
UNIT
1
t
su(CMDV-CLKH)
Setup time, MMCSD_CMD valid before MMCSD_CLK high
3.2
ns
2
t
h(CLKH-CMDV)
Hold time, MMCSD_CMD valid after MMCSD_CLK high
1.5
ns
3
t
su(DATV-CLKH)
Setup time, MMCSD_DATx valid before MMCSD_CLK high
3.2
ns
4
t
h(CLKH-DATV)
Hold time, MMCSD_DATx valid after MMCSD_CLK high
1.5
ns
Table 6-35. Switching Characteristics Over Recommended Operating Conditions for MMC/SD Module
(see
Figure 6-26
through
Figure 6-29
)
No.
PARAMETER
MIN
MAX
UNIT
7
f
(CLK)
Operating frequency, MMCSD_CLK
0
52
MHz
8
f
(CLK_ID)
Identification mode frequency, MMCSD_CLK
0
400
KHz
9
t
W(CLKL)
Pulse width, MMCSD_CLK low
6.5
ns
10
t
W(CLKH)
Pulse width, MMCSD_CLK high
6.5
ns
11
t
r(CLK)
Rise time, MMCSD_CLK
3
ns
12
t
f(CLK)
Fall time, MMCSD_CLK
3
ns
13
t
d(CLKL-CMD)
Delay time, MMCSD_CLK low to MMCSD_CMD transition
-4.5
2.5
ns
14
t
d(CLKL-DAT)
Delay time, MMCSD_CLK low to MMCSD_DATx transition
-4.5
2.5
ns
Copyright © 2008–2014, Texas Instruments Incorporated
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