Datasheet
AM3517, AM3505
SPRS550E –OCTOBER 2009–REVISED MARCH 2013
www.ti.com
Table 6-136. MMC/SD/SDIO Switching Characteristics High-Speed MMC Mode
(1)(2)
N O. PARAMETER 1.8V, 3.3V UNIT
MIN MAX
High-Speed MMC Mode
MMC1 t
c(clk)
Cycle time, output clk period 20.83 ns
MMC2 t
W(clkH)
Typical pulse duration, output clk high X
(3)
*PO
(4)
ns
MMC2 t
W(clkL)
Typical pulse duration, output clk low Y
(5)
*PO
(4)
ns
t
dc(clk)
Duty cycle error, output clk 1041.67 ps
t
j(clk)
Jitter standard deviation, output clk 200 ps
MMC/SD/SDIO Interface 1
t
c(clk)
Rise time, output clk 3 ns
t
W(clkH)
Fall time, output clk 3 ns
t
W(clkL)
Rise time, output data 3 ns
t
dc(clk)
Fall time, output data 3 ns
MMC5 t
d(CLKOH-CMD)
Delay time, mmc1_clk rising clock edge to mmc1_cmd 3.7 14.11 ns
transition
MMC6 t
d(CLKOH-DATx)
Delay time, mmc1_clk rising clock edge to mmc1_datx 3.7 16.50 ns
transition
MMC/SD/SDIO Interface 2
t
c(clk)
Rise time, output clk 3 ns
t
W(clkH)
Fall time, output clk 3 ns
t
W(clkL)
Rise time, output data 3 ns
t
dc(clk)
Fall time, output data 3 ns
MMC5 t
d(CLKOH-CMD)
Delay time, mmc2_clk rising clock edge to mmc2_cmd 3.7 14.11 ns
transition
MMC6 t
d(CLKOH-DATx)
Delay time, mmc2_clk rising clock edge to mmc2_datx 3.7 16.50 ns
transition
MMC/SD/SDIO Interface 3
t
c(clk)
Rise time, output clk 3 ns
t
W(clkH)
Fall time, output clk 3 ns
t
W(clkL)
Rise time, output data 3 ns
t
dc(clk)
Fall time, output data 3 ns
MMC5 t
d(CLKOH-CMD)
Delay time, mmc3_clk rising clock edge to mmc3_cmd 3.7 14.11 ns
transition
MMC6 t
d(CLKOH-DATx)
Delay time, mmc3_clk rising clock edge to mmc3_datx 3.7 14.11 ns
transition
(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 below.
(4) PO = output clk period in ns.
(5) The Y parameter is defined as shown below.
Table 6-137. X Parameter
CLKD X
1 or Even 0.5
Odd (trunc[CLKD/2]+1)/CLKD
Table 6-138. Y Parameter
CLKD Y
1 or Even 0.5
Odd (trunc[CLKD/2])/CLKD
200 Timing Requirements and Switching Characteristics Copyright © 2009–2013, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: AM3517 AM3505