AM3517_14 Datasheet, PDF (205/223 Pages) Texas Instruments – ARM Microprocessors

AM3517, AM3505
www.ti.com
SPRS550E – OCTOBER 2009 – REVISED MARCH 2013
Table 6-145. MMC/SD/SDIO Timing Requirements High-Speed SD Mode^(1)(2)(3) (continued)
NO.
HSSD7
t_{su(DATxV-CLKIH)}
HSSD8
t_{h(CLKIH-DATxIV)}
MMC/SD/SDIO Interface 2
HSSD3
t_{su(CMDV-CLKIH)}
HSSD4
t_{h(CLKIH-CMDIV)}
HSSD7
t_{su(DATxV-CLKIH)}
HSSD8
t_{h(CLKIH-DATxIV)}
MMC/SD/SDIO Interface 3
HSSD3
t_{su(CMDV-CLKIH)}
HSSD4
t_{h(CLKIH-CMDIV)}
HSSD7
t_{su(DATxV-CLKIH)}
HSSD8
t_{h(CLKIH-DATxIV)}
PARAMETER
Setup time, mmc1_datx valid before mmc1_clk rising
clock edge
Hold time, mmc1_datx valid after mmc1_clk rising
clock edge
Setup time, mmc2_cmd valid before mmc2_clk rising
clock edge
Hold time, mmc2_cmd valid after mmc2_clk rising
clock edge
Setup time, mmc2_datx valid before mmc2_clk rising
clock edge
Hold time, mmc2_datx valid after mmc2_clk rising
clock edge
Setup time, mmc3_cmd valid before mmc3_clk rising
clock edge
Hold time, mmc3_cmd valid after mmc3_clk rising
clock edge
Setup time, mmc3_datx valid before mmc3_clk rising
clock edge
Hold time, mmc3_datx valid after mmc3_clk rising
clock edge
1.8V, 3.3V
MIN
MAX
5.61
2.28
5.61
2.28
5.61
2.28
5.61
2.28
5.61
2.28
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Table 6-146. MMC/SD/SDIO Switching Characteristics High-Speed SD Mode⁽¹⁾⁽²⁾
NO.
High-Speed SD Mode
HSSD1
t_c(clk)
HSSD2
t_W(clkH)
HSSD2
t_W(clkL)
t_dc(clk)
t_j(clk)
MMC/SD/SDIO Interface 1
HSSD5
t_r(clk)
t_f(clkH)
t_r(clkL)
t_f(clk)
t_d(CLKOH-CMD)
HSSD6
t_{d(CLKOH-DATx)}
MMC/SD/SDIO Interface 2
t_r(clk)
t_f(clkH)
t_r(clkL)
t_f(clk)
PARAMETER
Cycle time
Typical pulse duration, output clk high
Typical pulse duration, output clk low
Duty cycle error, output clk
Jitter standard deviation
Rise time, output clk
Fall time, output clk
Rise time, output data
Fall time, output data
Delay time, mmc1_clk rising clock edge to mmc1_cmd
transition
Delay time, mmc1_clk rising clock edge to mmc1_datx
transition
Rise time, output clk
Fall time, output clk
Rise time, output data
Fall time, output data
1.8 V, 3.3 V
MIN
MAX
X ⁽³⁾*PO ⁽⁴⁾
Y ⁽⁵⁾*PO⁽⁴⁾
20.83
1041.67
200
3
3
3
3
3.72
14.11
3.72
14.11
3
3
3
3
UNIT
ns
ns
ns
ps
ps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(1) In datx, x is equal to 1, 2, 3, 4, 5, 6, or 7.
(2) The jitter probability density can be approximated by a Gaussian function.
(3) The X parameter is defined as shown in Table 6-147.
(4) PO = output clk period in ns.
(5) The Y parameter is defined as shown in Table 6-148.
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Timing Requirements and Switching Characteristics 205
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