参数资料
型号: MCIMX258CVM4
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA400
封装: 17 X 17 MM, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MAPBGA-400
文件页数: 154/154页
文件大小: 1498K
代理商: MCIMX258CVM4
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 8
Freescale Semiconductor
99
Figure 70. Active-Low-Reset SIM Card Reset Sequence
Table 76 defines the general timing requirements for the SIM interface.
3.7.14.2
SIM Power-Down Sequence
Figure 71 shows the SIM interface power-down AC timing diagram. Table 77 shows the timing
requirements for parameters (SI7–SI10) shown in the figure.
The power-down sequence for the SIM interface is as follows:
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
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.
Table 76. Timing Specifications, Active-Low-Reset SIM Card Reset Sequence
Ref No.
Min.
Max.
Unit
1
200
clk cycles
2
400
40,000
clk cycles
3
40,000
clk cycles
SIMx_SVENy
SIMx_CLKy
SIMx_DATAy_RX_TX
2
T0
1
RESPONSE
SIMx_RSTy
T1
3
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