User's Manual

UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 38 / 67
The following figure shows the reference design of the 8-pin USIM card.
USIM_VDD
USIM_GND/GND
USIM_RST
USIM_CLK
USIM_DATA
USIM_PRESENCE
22R
22R
22R
VDD_EXT
51K
100nF USIM holder
GND
GND
ESDA6V8AV6
33pF 33pF 33pF
VCC
RST
CLK
IO
VPP
GND
GND
USIM_VDD
15K
Module
Figure 20: Reference Circuit of the 8-Pin USIM Card
UG95 supports USIM card hot-plugging via the USIM_PRESENCE pin. If you do not need the USIM card
detection function, keep USIM_PRESENCE unconnected. The reference circuit for using a 6-pin USIM
card socket is illustrated as the following figure.
Module
USIM_VDD
USIM_GND
USIM_RST
USIM_CLK
USIM_DATA
22R
22R
22R
100nF
USIM holder
GND
ESDA6V8AV6
33pF 33pF 33pF
VCC
RST
CLK IO
VPP
GND
GND
15K
USIM_VDD
Figure 21: Reference Circuit of the 6-Pin USIM Card