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5.6 SIM Card Interface
5.6.1
Block Description
Figure 5.11 shows the SIM card interface control block. As shown in Figure 5.11, this control block contains an
SH7760 internal SIM card module (SIM), a power supply/level converter (LTC1555LEGN-1, 8) and an 8-pin
connector (CN4) to enable communications with the SIM card inserted into the SIM card interface connector
(CN4).
SIM card reset can be controlled through SIM SIM_RST control. The following methods can be used for reset
control.
• "Low" output from SIM_RST: The SIM card reset pin is set to "Low." (Reset)
• "High" output from SIM_RST: The SIM card reset pin is set to "High." (Normal)
Power supply to the SIM card is controlled through the power supply controller (H8/3048f-ONE). The SIM
card is being powered while Solution Engine2's power is turned on. Before inserting or removing the SIM card,
be sure to turn off the Solution Engine2 unit.
For more details, refer to the pertinent SH7760 Hardware Manual.
SH7760
Smart card
module (SIM)
Power supply controller
(H8/3048F-ONE)
SIM_CLK
SIM_D
SIM_RST
VCC
Figure 5.11 eTROM Interface Control Block
Power supply/level
converter
(LTC1555LEGN- 1.8)
45
SIM card interface
connector (CN4)
CLK
I/O
VCC
RST
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