XT65/XT75 Hardware Interface Overview
6.5 Pin Assignment and Signal Description
s
XT65_XT75_HO_v00.130
Page 37 of 67
2006-10-12
Confidential / Preliminary
SIM
interface
specified
for use
with 3V
SIM card
CCIN
I
R
I
≈
100k
Ω
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
≈
47
Ω
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
≈
4.7k
Ω
V
IL
max = 0.75V
V
IL
min = -0.3V
V
IH
min = 2.1V
V
IH
max = CC 0.3V =
3.05V
R
O
≈
100
Ω
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
≈
100
Ω
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 17:
Signal description
Function
Signal name
IO
Signal form and level
Comment