User's Manual

UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 18 / 67
USB_DM
10
IO
USB differential data
bus.
Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90Ω.
USIM Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
USIM_GND
47
Specified ground for
USIM card.
USIM_VDD
43
PO
Power supply for
USIM card.
For 1.8V USIM:
Vmax = 1.85V
Vmin = 1.75V
For 3.0V USIM:
Vmax = 2.9V
Vmin = 2.8V
Either 1.8V or 3.0V is
supported by the
module automatically.
USIM_DATA
45
IO
Data signal of USIM
card.
For 1.8V USIM:
V
IL
max = 0.35V
V
IH
min = 1.25V
V
OL
max = 0.25V
V
OH
min = 1.25V
For 3.0V USIM:
V
IL
max = 0.5V
V
IH
min = 2.05V
V
OL
max = 0.25V
V
OH
min = 2.05V
Pull-up to USIM_VDD
with 4.7k resistor
internally.
USIM_CLK
46
DO
Clock signal of USIM
card.
For 1.8V USIM:
V
OL
max = 0.25V
V
OH
min = 1.25V
For 3.0V USIM:
V
OL
max = 0.25V
V
OH
min = 2.05V
USIM_RST
44
DO
Reset signal of
USIM card.
For 1.8V USIM:
V
OL
max = 0.25V
V
OH
min = 1.25V
For 3.0V USIM:
V
OL
max = 0.3V
V
OH
min = 2.05V
USIM_PRES
ENCE
42
DI
USIM card input
detection.
V
IL
max = 0.35V
V
IH
min = 1.3V
V
IH
max = 1.85V
1.8V power domain.
External pull-up
resistor is required.