7.25.3.1 MMC3 and MMC4, SD Default Speed
Figure 7-83 , Figure 7-84, and Table 7-122 through Table 7-125 present Timing requirements and Switching characteristics for MMC3 and MMC4 - SD Default speed in receiver and transmitter mode.
Table 7-122 Timing Requirements for MMC3 - Default Speed Mode (1)
NO. |
PARAMETER |
DESCRIPTION |
MIN |
MAX |
UNIT |
DS5 |
tsu(cmdV-clkH) |
Setup time, mmc3_cmd valid before mmc3_clk rising clock edge |
5.11 |
|
ns |
DS6 |
th(clkH-cmdV) |
Hold time, mmc3_cmd valid after mmc3_clk rising clock edge |
20.46 |
|
ns |
DS7 |
tsu(dV-clkH) |
Setup time, mmc3_dat[i:0] valid before mmc3_clk rising clock edge |
5.11 |
|
ns |
DS8 |
th(clkH-dV) |
Hold time, mmc3_dat[i:0] valid after mmc3_clk rising clock edge |
20.46 |
|
ns |
- i in [i:0] = 7
Table 7-123 Switching Characteristics for MMC3 - SD/SDIO Default Speed Mode (2)
NO. |
PARAMETER |
DESCRIPTION |
MIN |
MAX |
UNIT |
DS0 |
fop(clk) |
Operating frequency, mmc3_clk |
|
24 |
MHz |
DS1 |
tw(clkH) |
Pulse duration, mmc3_clk high |
0.5 × P - 0.270 (1) |
|
ns |
DS2 |
tw(clkL) |
Pulse duration, mmc3_clk low |
0.5 × P - 0.270 (1) |
|
ns |
DS3 |
td(clkL-cmdV) |
Delay time, mmc3_clk falling clock edge to mmc3_cmd transition |
-14.93 |
14.93 |
ns |
DS4 |
td(clkL-dV) |
Delay time, mmc3_clk falling clock edge to mmc3_dat[i:0] transition |
-14.93 |
14.93 |
ns |
- P = output mmc3_clk period in ns
- i in [i:0] = 7
Table 7-124 Timing Requirements for MMC4 - Default Speed Mode (1)
NO. |
PARAMETER |
DESCRIPTION |
MIN |
MAX |
UNIT |
DS5 |
tsu(cmdV-clkH) |
Setup time, mmc4_cmd valid before mmc4_clk rising clock edge |
5.11 |
|
ns |
DS6 |
th(clkH-cmdV) |
Hold time, mmc4_cmd valid after mmc4_clk rising clock edge |
20.46 |
|
ns |
DS7 |
tsu(dV-clkH) |
Setup time, mmc4_dat[i:0] valid before mmc4_clk rising clock edge |
5.11 |
|
ns |
DS8 |
th(clkH-dV) |
Hold time, mmc4_dat[i:0] valid after mmc4_clk rising clock edge |
20.46 |
|
ns |
- i in [i:0] = 3
Table 7-125 Switching Characteristics for MMC4 - Default Speed Mode (2)
NO. |
PARAMETER |
DESCRIPTION |
MIN |
MAX |
UNIT |
DS0 |
fop(clk) |
Operating frequency, mmc4_clk |
|
24 |
MHz |
DS1 |
tw(clkH) |
Pulse duration, mmc4_clk high |
0.5 × P - 0.270 (1) |
|
ns |
DS2 |
tw(clkL) |
Pulse duration, mmc4_clk low |
0.5 × P - 0.270 (1) |
|
ns |
DS3 |
td(clkL-cmdV) |
Delay time, mmc4_clk falling clock edge to mmc4_cmd transition |
-14.93 |
14.93 |
ns |
DS4 |
td(clkL-dV) |
Delay time, mmc4_clk falling clock edge to mmc4_dat[i:0] transition |
-14.93 |
14.93 |
ns |
- P = output mmc4_clk period in ns
- i in [i:0] = 3