AM1707_1004 Datasheet, PDF (86/198 Pages) Texas Instruments – AM1707 ARM Microprocessor

AM1707
SPRS637A – FEBRUARY 2010 – REVISED APRIL 2010
6.14.3 MMC/SD Electrical Data/Timing
www.ti.com
No.
1
2
3
4
t_{su(CMDV-CLKH)}
t_h(CLKH-CMDV)
t_{su(DATV-CLKH)}
t_h(CLKH-DATV)
Table 6-32. Timing Requirements for MMC/SD Module
(see Figure 6-27 and Figure 6-29)
PARAMETER
MIN
Setup time, MMCSD_CMD valid before MMCSD_CLK high
3.2
Hold time, MMCSD_CMD valid after MMCSD_CLK high
1.5
Setup time, MMCSD_DATx valid before MMCSD_CLK high
3.2
Hold time, MMCSD_DATx valid after MMCSD_CLK high
1.5
MAX
UNIT
ns
ns
ns
ns
Table 6-33. Switching Characteristics Over Recommended Operating Conditions for MMC/SD Module
(see Figure 6-26 through Figure 6-29)
No.
7 f_(CLK)
8 f_{(CLK_ID)}
9 t_W(CLKL)
10 t_W(CLKH)
11 t_r(CLK)
12 t_f(CLK)
13 t_d(CLKL-CMD)
14 t_d(CLKL-DAT)
PARAMETER
Operating frequency, MMCSD_CLK
Identification mode frequency, MMCSD_CLK
Pulse width, MMCSD_CLK low
Pulse width, MMCSD_CLK high
Rise time, MMCSD_CLK
Fall time, MMCSD_CLK
Delay time, MMCSD_CLK low to MMCSD_CMD transition
Delay time, MMCSD_CLK low to MMCSD_DATx transition
MIN
MAX UNIT
0
52
MHz
0
400
KHz
6.5
ns
6.5
ns
3
ns
3
ns
-4.5
2.5
ns
-4.5
2
ns
86
Peripheral Information and Electrical Specifications
Submit Documentation Feedback
Product Folder Link(s): AM1707
Copyright © 2010, Texas Instruments Incorporated