MCIMX255AJM4A Freescale, MCIMX255AJM4A Datasheet - Page 97

• Manufacturer Part Number: MCIMX255AJM4A
• Manufacturer: Freescale

Specifications of MCIMX255AJM4A

• Lead Free Status / RoHS Status: Compliant

SIMx_DATAy_RX_TX
Table 74
3.7.14.2
Figure 71
requirements for parameters (SI7–SI10) shown in the figure.
The power-down sequence for the SIM interface is as follows:
Each of the above steps requires one CKIL period (usually 32 kHz). Power-down may be initiated by a
SIM card removal detection; or it may be launched by the processor.
Freescale Semiconductor
SIMx_SVENy
SIMx_RSTy
SIMx_CLKy
•
•
•
•
•
SIMx_SIMPDy port detects the removal of the SIM Card
SIMx_RSTy is negated
SIMx_CLKy is negated
SIMx_DATAy_RX_TX is negated
SIMx_SVENy is negated
defines the general timing requirements for the SIM interface.
Ref No.
shows the SIM interface power-down AC timing diagram.
1
2
3
SIM Power-Down Sequence
Table 74. Timing Specifications, Active-Low-Reset SIM Card Reset Sequence
T0
1
i.MX25 Applications Processor for Automotive Products, Rev. 4
Figure 70. Active-Low-Reset SIM Card Reset Sequence
40,000
Min.
3
400
—
T1
40,000
Max.
200
—
2
Table 75
3
shows the timing
RESPONSE
clk cycles
clk cycles
clk cycles
Unit
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