AM3703CUS datasheet(249/280 Pages) TI

249 / 280 page

AM3715, AM3703

www.ti.com

SPRS616F

– JUNE 2010 – REVISED AUGUST 2011

Table 6-114. MMC1 Interface Switching Characteristics

—High-Speed SD Mode(7)

NO.

PARAMETER

OPP100

OPP50

UNIT

MIN

MAX

MIN

MAX

High-Speed SD Mode

HSSD1

tc(clk)

Frequency(1), output clock period

MHz

HSSD2

tW(clkH)

Typical pulse duration, output clock high

X(4)*PO(2)

HSSD2

tW(clkL)

Typical pulse duration, output clock low

Y(5)*PO(2)

tdc(clk)

Duty cycle error, output clock

1041.67

2083.33

tJ(clk)

Jitter standard deviation(3), output clock

200

MMC1 Interface (1.8-V IO)

tR(clk)

Rise time, output clock

tF(clk)

Fall time, output clock

tR(data)

Rise time, output data

tF(data)

Fall time, output data

HSSD5

td(CLKOH-CMD)

Delay time, mmc1_clk rising clock edge to mmc1_cmd

3.72

14.11

4.13

34.53

transition

HSSD6

td(CLKOH-DATx)

Delay time, mmc1_clk rising clock edge to

3.72

14.11

4.13

34.53

mmc1_dat[n:0](6) transition

MMC1 Interface (3.0-V IO)

tR(clk)

Rise time, output clock

tF(clk)

Fall time, output clock

tR(data)

Rise time, output data

tF(data)

Fall time, output data

HSSD5

td(CLKOH-CMD)

Delay time, mmc1_clk rising clock edge to mmc1_cmd

3.72

14.11

4.13

34.53

transition

HSSD6

td(CLKOH-DATx)

Delay time, mmc1_clk rising clock edge to

3.72

14.11

4.13

34.53

mmc1_dat[n:0](6) transition

(1) Related with the output clock maximum and minimum frequencies programmable in MMC module.

(2) PO = output clock period in ns

(3) The jitter probability density can be approximated by a Gaussian function.

(4) The X parameter is defined as follows:

CLKD

1 or Even

0.5

Odd

(trunk[CLKD/2]+1)/CLKD

All required details about clock division factor CLKD can be found in the AM/DM37x Multimedia Device Technical Reference Manual

(literature number SPRUGN4).

(5) The Y parameter is defined as follows:

CLKD

1 or Even

0.5

Odd

(trunk[CLKD/2])/CLKD

All required details about clock division factor CLKD can be found in the AM/DM37x Multimedia Device Technical Reference Manual

(literature number SPRUGN4).

(6) In mmc1_dat[n:0], n is equal to 3.

(7) See Section 4.3.4, Processor Clocks.

Timing Requirements and Switching Characteristics

249

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