Specifications

XT65/XT75 Hardware Interface Description
7.5 Pin Assignment and Signal Description
s
XT65_XT75_HD_v01.001 Page 97 of 133 2007-1-8
Confidential / Released
SIM
interface
specified
for use
with 3V
SIM card
CCIN I R
I
≈ 100kΩ
V
IL
max = 0.6V at I = -25µA
V
IH
min = 2.1V at I = -10µA
V
O
max = 3.05V
CCIN = Low, SIM card holder
closed
Maximum cable length or copper
track 100mm to SIM card holder.
All signals of SIM interface are
protected against ESD with a spe-
cial diode array.
Usage of CCGND is mandatory.
CCRST O R
O
≈ 47Ω
V
OL
max = 0.25V at I = +1mA
V
OH
min = 2.5V at I = -0.5mA
V
OH
max = 2.95V
CCIO I/O R
I
≈ 4.7kΩ
V
IL
max = 0.75V
V
IL
min = -0.3V
V
IH
min = 2.1V
V
IH
max = CCVCCmin + 0.3V =
3.05V
R
O
≈ 100Ω
V
OL
max = 0.3V at I = +1mA
V
OH
min = 2.5V at I = -0.5mA
V
OH
max = 2.95V
CCCLK O R
O
≈ 100Ω
V
OL
max = 0.3V at I = +1mA
V
OH
min = 2.5V at I = -0.5mA
V
OH
max = 2.95V
CCVCC O V
O
min = 2.75V
V
O
typ = 2.85V
V
O
max = 2.95V
I
O
max = -20mA
CCGND Ground
Table 29: Signal description
Function Signal name IO Signal form and level Comment