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AM1808
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
6.13.3 MMC/SD Electrical Data/Timing
Table 6-40
through
NO.
t
su(CMDV-
1
Setup time, MMCSD_CMD valid before MMCSD_CLK high
CLKH)
2
t
Hold time, MMCSD_CMD valid after MMCSD_CLK high
h(CLKH-CMDV)
3
t
Setup time, MMCSD_DATx valid before MMCSD_CLK high
su(DATV-CLKH)
4
t
Hold time, MMCSD_DATx valid after MMCSD_CLK high
h(CLKH-DATV)
Table 6-41. Switching Characteristics for MMC/SD (see
NO.
7
f
Operating frequency, MMCSD_CLK
(CLK)
8
f
Identification mode frequency, MMCSD_CLK
(CLK_ID)
9
t
Pulse width, MMCSD_CLK low
W(CLKL)
10
t
Pulse width, MMCSD_CLK high
W(CLKH)
11
t
Rise time, MMCSD_CLK
r(CLK)
12
t
Fall time, MMCSD_CLK
f(CLK)
13
t
Delay time, MMCSD_CLK low to MMCSD_CMD transition
d(CLKL-CMD)
14
t
Delay time, MMCSD_CLK low to MMCSD_DATx transition
d(CLKL-DAT)
126
Peripheral Information and Electrical Specifications
Table 6-41
assume testing over recommended operating conditions.
Table 6-40. Timing Requirements for MMC/SD
(see
Figure 6-25
PARAMETER
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and
Figure
6-27)
1.3V, 1.2V
MIN
MAX
4
2.5
4.5
2.5
Figure 6-24
through
1.3V, 1.2V
MIN
MAX
0
52
0
400
6.5
6.5
3
3
-4
2.5
-4
3.3
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1.1V
1.0V
MIN
MAX
MIN
MAX
4
6
2.5
2.5
5
6
2.5
2.5
Figure
6-27)
1.1V
1.0V
MIN
MAX
MIN
MAX
0
50
0
25
0
400
0
400
6.5
10
6.5
10
3
10
3
10
-4
3
-4
4
-4
3.5
-4
4
UNIT
ns
ns
ns
ns
UNIT
MHz
KHz
ns
ns
ns
ns
ns
ns
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