Cinterion EGS5, Описание аппаратного интерфейса

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EGS5 Hardware Interface Description
5.5 Pad Assignment and Signal Description
104
EGS5_HD_v02.004 Page 90 of 123 2012-02-09
Confidential / Released

SIM
interface
specified
for use
with 1.8V
SIM card
CCIN I R
I
 100k

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
If CCIN is unused, connect to
CCGND.
Maximum cable length or cop-
per track 100mm to SIM card
holder.
All signals of SIM interface are
protected against ESD with a
special diode array.
Usage of CCGND is manda-
tory.
CCRST O R
O
 47

V
OL
max = 0.25V at I = +1mA
V
OH
min = 1.45V at I = -0.5mA
V
OH
max = 1.90V
CCIO I/O R
I
 4.7k

V
IL
max = 0.45V
V
IH
min = 1.35V
V
IH
max = CC 0.3V =
2.00V
R
O
 100

V
OL
max = 0.3V at I = +1mA
V
OH
min = 1.45V at I = -0.5mA
V
OH
max = 1.90V
CCCLK O R
O
 100

V
OL
max = 0.3V at I = +1mA
V
OH
min = 1.45V at I = -0.5mA
V
OH
max = 1.90V
CCVCC O V
O
min = 1.70V,
V
O
typ = 1.80V
V
O
max = 1.90V
I
O
max = -20mA
CCGND Ground
I
2
C inter-
face
I2CCLK_SPIC
LK
O V
OL
max = 0.2V at I = 2mA
V
OH
min = 2.55V at I = -0.5mA
V
OH
max = 3.00V
I
2
C interface is only available if
the two lines are not used as
SPI interface.
I2CDAT is configured as Open
Drain and needs a pull-up resis-
tor in the host application.
According to the I
2
C Bus Spec-
ification Version 2.1 for the fast
mode a rise time of max. 300ns
is permitted. There is also a
maximum VOL=0.4V at 3mA
specified.
The value of the pull-up
depends on the capacitive load
of the whole system (I
2
C Slave
+ lines). The maximum sink cur-
rent of I2CDAT and I2CCLK is
4mA.
If lines are unused keep lines
open.
I2CDAT_SPID
O
I/O V
OL
max = 0.2V at I = 2mA
V
IL
max = 0.8V
V
IH
min = 2.15V
V
IH
max = V 0.3V =
3.05V
Table 27:
Signal description
Function Signal name IO Signal form and level Comment