WIFI Module
FC10 EVB User Guide
FC10_EVB_User_Guide Confidential / Released 18 / 28
Figure 11: Pins Assignment of USIM Card Holder
Table 6: Pin Assignment of J503
EC20 supports USIM card hot-plug via the USIM_PRESENCE pin. And it supports low level and high
level detection, which is disabled by default.
J503 Pin
Signal Name
I/O
Description
C1
USIM_VDD
O
USIM/SIM card power
C2
USIM_RST
O
USIM/SIM card reset
C3
USIM_CLK
O
USIM/SIM card clock
C5
GND
/
Ground
C6
VPP
/
Not connected
C7
USIM_DATA
I/O
Data line, bi-directional
CD1
GND
GND
USIM card detection
CD2
USIM_PRESENCE
I
USIM card detection
NOTE
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