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IMX53CEC датащи(PDF) 76 Page - Freescale Semiconductor, Inc

номер детали IMX53CEC
подробное описание детали  Applications Processors for Consumer Products
PDF  204 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

IMX53CEC датащи(HTML) 76 Page - Freescale Semiconductor, Inc

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i.MX53xD Applications Processors for Consumer Products, Rev. 2
76
Freescale Semiconductor
Electrical Characteristics
4.7.4
Enhanced Secured Digital Host Controller(eSDHCv2/v3) AC timing
This section describes the electrical information of the eSDHCv2/v3, which includes SD/eMMC4.3
(Single Data Rate) timing and eMMC4.4 (Dual Date Rate) timing.
4.7.4.1
SD/eMMC4.3 (Single Data Rate) AC Timing
Figure 36 depicts the timing of SD/eMMC4.3, and Table 50 lists the SD/eMMC4.3 timing characteristics.
Figure 36. SD/eMMC4.3 Timing
Table 50. SD/eMMC4.3 Interface Timing Specification
ID
Parameter
Symbols
Min
Max
Unit
Card Input Clock
SD1
Clock Frequency (Low Speed)
fPP
1
0
400
kHz
Clock Frequency (SD/SDIO Full Speed/High Speed)
fPP
2
0
25/50
MHz
Clock Frequency (MMC Full Speed/High Speed)
fPP
3
0
20/52
MHz
Clock Frequency (Identification Mode)
fOD
100
400
kHz
SD2
Clock Low Time
tWL
7—
ns
SD3
Clock High Time
tWH
7—
ns
SD4
Clock Rise Time
tTLH
—3
ns
SD5
Clock Fall Time
tTHL
—3
ns
eSDHC Output/Card Inputs CMD, DAT (Reference to CLK)
SD6
eSDHC Output Delay
tOD
–5
5
ns
eSDHC Input/Card Outputs CMD, DAT (Reference to CLK)
SD1
SD3
SD5
SD4
SD7
CMD
output from eSDHCv2 to card
DAT1
......
DAT7
DAT0
CMD
input from card to eSDHCv2
DAT1
......
DAT7
DAT0
SCK
SD2
SD8
SD6



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