AM3517_12 Datasheet, PDF (206/222 Pages) Texas Instruments – ARM Microprocessors

AM3517, AM3505
SPRS550D – OCTOBER 2009 – REVISED MARCH 2012
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Table 6-146. MMC/SD/SDIO Switching Characteristics High-Speed SD Mode⁽¹⁾⁽²⁾ (continued)
NO.
HSSD5
t_d(CLKOH-CMD)
HSSD6
t_{d(CLKOH-DATx)}
MMC/SD/SDIO Interface 3
HSSD5
t_r(clk)
t_f(clkH)
t_r(clkL)
t_f(clk)
t_d(CLKOH-CMD)
HSSD6
t_{d(CLKOH-DATx)}
PARAMETER
Delay time, mmc2_clk rising clock edge to mmc2_cmd
transition
Delay time, mmc2_clk rising clock edge to mmc2_datx
transition
Rise time, output clk
Fall time, output clk
Rise time, output data
Fall time, output data
Delay time, mmc3_clk rising clock edge to mmc3_cmd
transition
Delay time, mmc3_clk rising clock edge to mmc3_datx
transition
1.8 V, 3.3 V
MIN
MAX
3.72
14.11
3.72
14.11
3
3
3
3
3.72
14.11
3.72
14.11
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
CLKD
1 or Even
Odd
Table 6-147. X Parameters
X
0.5
(trunc[CLKD/2]+1)/CLKD
Table 6-148. Y Parameters
CLKD
1 or Even
Odd
Y
0.5
(trunc[CLKD/2])/CLKD
For details about clock division factor CLKD, see the AM35x ARM Microprocessor Technical Reference
Manual (literature number SPRUGR0).
mmcx_clk
mmcx_cmd
mmcx_dat[3:0]
HSSD1
HSSD3
HSSD7
HSSD2
HSSD4
HSSD8
In mmcx, x is equal to 1, 2, or 3.
Figure 6-68. MMC/SD/SDIO High-Speed SD Mode Data/Command Receive
030-106
mmcx_clk
mmcx_cmd
mmcx_dat[3:0]
HSSD1
HSSD5
HSSD6
HSSD2
HSSD5
HSSD6
In mmcx, x is equal to 1, 2, or 3.
Figure 6-69. MMC/SD/SDIO High-Speed SD Mode Data/Command Transmit
030-107
206 Timing Requirements and Switching Characteristics
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