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参数资料
型号： MCIMX514AJM6C
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PBGA529
封装： 19 X 19 MM, 0.8 MM PITCH, ROHS COMPLIANT, BGA-529
文件页数： 27/172页
文件大小： 2218K
代理商： MCIMX514AJM6C
i.MX51A Automotive and Infotainment Applications Processors, Rev. 4
122
Freescale Semiconductor
Electrical Characteristics
4.7.12
SIM (Subscriber Identification Module) Timing
This section describes the electrical parameters of the SIM module. Each SIM module interface consists
of 12 signals (two separate ports each containing six signals). Typically a a port uses five signals.
The interface is designed to be used with synchronous SIM cards meaning the SIM module provides the
clock used by the SIM card. The clock frequency is typically 372 times the Tx/Rxdata rate, however the
SIM module can work with CLK frequencies of 16 times the Tx/Rx data rate.
There is no timing relationship between the clock and the data. The clock that the SIM module provides
to the SIM card is used by the SIM card to recover the clock from the data in the same manner as standard
UART data exchanges. All six signals (5 for bi-directional Tx/Rx) of the SIM module are asynchronous
to each other.
There are no required timing relationships between signals in normal mode. The SIM card is initiated by
the interface device; the SIM card responds with Answer to Reset. Although the SIM interface has no
defined requirements, the ISO-7816 defines reset and power-down sequences. (For detailed information,
see ISO-7816.)
Table 97 defines the general timing requirements for the SIM interface.
Figure 83. SIM Clock Timing Diagram
Table 97. SIM Timing Parameters, High Drive Strength
ID
Parameter
Symbol
Min
Max
Unit
SI1
SIM Clock Frequency (SIMx_CLKy)1,
1 50% duty cycle clock
Sfreq
0.01
25
MHz
SI2
SIM Clock Rise Time (SIMx_CLKy)2
2 With C = 50 pF
Srise
—0.09
×(1/S
freq)ns
SI3
SIM Clock Fall Time (SIMx_CLKy)3
3 With C = 50 pF
Sfall
—0.09
×(1/S
freq)ns
SI4
SIM Input Transition Time
(SIMx_DATAy_RX_TX, SIMx_SIMPDy)
Strans
10
25
ns
SI5
SIM I/O Rise Time / Fall
Time(SIMx_DATAy_RX_TX)4
4 With Cin = 30 pF, Cout = 30 pF
Tr/Tf
—
1
s
SI6
SIM RST Rise Time / Fall Time(SIMx_RSTy)5
5 With Cin = 30 pF
Tr/Tf
—
1
s
SIMx_CLKy
SI2
SI3
1/SI1
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