MCIMX31LITEKITC Freescale Semiconductor, MCIMX31LITEKITC Datasheet - Page 93
MCIMX31LITEKITC
Manufacturer Part Number
MCIMX31LITEKITC
Description
BOARD DEV FOR I.MX31
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheet
1.MCIMX31LITEKITC.pdf
(122 pages)
Specifications of MCIMX31LITEKITC
Contents
Module and Misc Hardware
For Use With/related Products
i.MX31
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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4.3.20.3 Power Down Sequence
Power down sequence for SIM interface is as follows:
Each of this steps is done in one CKIL period (usually 32 kHz). Power down can be started because of a
SIM Card removal detection or launched by the processor.
requirements for this sequence, with Fckil = CKIL frequency value.
Freescale Semiconductor
Num
1
2
3
4
1. SIMPD port detects the removal of the SIM Card
2. RST goes Low
3. CLK goes Low
4. TX goes Low
5. VEN goes Low
SIM reset to SIM clock stop
SIM reset to SIM TX data low
SIM reset to SIM Voltage Enable Low
SIM Presence Detect to SIM reset Low
DATA_TX
SIMPD
SVEN
RST
CLK
Description
Spd2rst
Table 58. Timing Requirements for Power Down Sequence
Figure 76. SmartCard Interface Power Down AC Timing
MCIMX31/MCIMX31L Technical Data, Rev. 4.1
Srst2clk
Srst2dat
Symbol
S
S
S
S
rst2ven
rst2dat
rst2clk
pd2rst
Srst2ven
Figure 76
0.9*1/FCKIL
1.8*1/FCKIL
2.7*1/FCKIL
0.9*1/FCKIL
Min
and
Table 58
show the usual timing
Electrical Characteristics
Max
0.8
1.2
1.8
25
Unit
µs
µs
µs
ns
93
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