AM652X datasheet(205/299 Pages) TI1

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DSSD2

DSSD1

DSSD0

DSSD6

DSSD5

DSSD8

DSSD7

MMC1_CLK

MMC1_CMD

MMC1_DAT[3:0]

MMC1_01

205

AM6548, AM6528, AM6546

AM6526, AM6527

www.ti.com

SPRSP08E – NOVEMBER 2017 – REVISED OCTOBER 2018

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Product Folder Links: AM6548 AM6528 AM6546 AM6526 AM6527

Specifications

•

UHS-I SDR104, SD Card, 4-bit data

•

UHS-I DDR50, SD Card, 4-bit data

NOTE

For more information, see the Multimedia Card/Secure Digital (MMC/SD) Interface chapter of

the Device TRM.

5.11.5.16.2.1 Default speed, 4-bit data, SDR, half-cycle

Table 5-71 and Table 5-72 present Timing requirements and Switching characteristics for MMC1 - Default

Speed in receiver and transmitter mode (see Figure 5-76 and Figure 5-77)

Table 5-71. Timing Requirements for MMC1 - SD Card Default Speed Mode

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

DSSD5 tsu(cmdV-clkH)

Setup time, MMC1_CMD valid before MMC1_CLK

rising clock edge

Positive-edge

Reference Clock

2.44

DSSD6 th(clkH-cmdV)

Hold time, MMC1_CMD valid after MMC1_CLK rising

clock edge

Positive-edge

Reference Clock

0.17

DSSD7 tsu(dV-clkH)

Setup time, MMC1_DAT[3:0] valid before MMC1_CLK

rising clock edge

Positive-edge

Reference Clock

2.44

DSSD8 th(clkH-dV)

Hold time, MMC1_DAT[3:0] valid after MMC1_CLK

rising clock edge

Positive-edge

Reference Clock

0.17

Table 5-72. Switching Characteristics for MMC1 - SD Card Default Speed Mode

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

DSSD0 fop(clk)

Operating frequency, MMC1_CLK

Positive-edge

Reference Clock

MHz

DSSD1 tw(clkH)

Pulse duration, MMC1_CLK high

Positive-edge

Reference Clock

19.49

DSSD2 tw(clkL)

Pulse duration, MMC1_CLK low

Negative-edge

Reference Clock

19.49

DSSD3 td(clkL-cmdV)

Delay time, MMC1_CLK falling clock edge to

MMC1_CMD transition

Negative-edge

Reference Clock

-14.39

14.39

DSSD4 td(clkL-dV)

Delay time, MMC1_CLK falling clock edge to

MMC1_DAT[3:0] transition

Negative-edge

Reference Clock

-14.39

14.39

(1) P = output MMC1_CLK period in ns

Figure 5-76. MMC/SD in - Default Speed - Receiver Mode

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