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SPRS717F –OCTOBER 2011–REVISED APRIL 2013
5.12 Multimedia Card (MMC) Interface
For more information, see the Multimedia Card (MMC) section of the AM335x ARM Cortex-A8
Microprocessors (MPUs) Technical Reference Manual (literature number SPRUH73).
5.12.1 MMC Electrical Data and Timing
Table 5-86. MMC Timing Conditions
TIMING CONDITION PARAMETER
MIN
TYP
MAX UNIT
Input Conditions
tr
tf
Input signal rise time
Input signal fall time
1
1
5
5
ns
ns
Output Condition
Cload
Output load capacitance
3
30
pF
Table 5-87. Timing Requirements for MMC[x]_CMD and MMC[x]_DAT[7:0]
(see Figure 5-92)
NO.
MIN
4.1
TYP
MAX
UNIT
Setup time, MMC_CMD valid before MMC_CLK rising clock
edge
1
2
3
4
tsu(CMDV-CLKH)
th(CLKH-CMDV)
tsu(DATV-CLKH)
th(CLKH-DATV)
ns
ns
ns
ns
Hold time, MMC_CMD valid after MMC_CLK rising clock edge
3.76
4.1
Setup time, MMC_DATx valid before MMC_CLK rising clock
edge
Hold time, MMC_DATx valid after MMC_CLK rising clock edge
3.76
1
2
MMC[x]_CLK (Output)
MMC[x]_CMD (Input)
MMC[x]_DAT[7:0] (Inputs)
3
4
Figure 5-92. MMC[x]_CMD and MMC[x]_DAT[7:0] Input Timing
Copyright © 2011–2013, Texas Instruments Incorporated
Peripheral Information and Timings
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