User's Manual

MC46 Hardware Interface Description
Confidential / Released
s
mo b i l e
MC46_HD_V03.05 Page 74 of 99 13.11.2003
Function Signal name IO Signal form and level Comments
CCIN I
R
I
# 100kW
V
IL
max = 0.5V
V
IH
min = 2.15V at I = 20µA,
V
IH
max = 3.3V at I = 30µA
CCRST O
R
O
#47W
V
OL
max = 0.25V at I = 1mA
V
OH
min = 2.3V at I = -1mA
V
OH
max = 2.73V
CCIO IO
R
I
#10kW
V
IL
max = 0.5V
V
IH
min = 1.95V, V
IH
max = 3.3V
R
O
#220W
V
OL
max = 0.4V at I = 1mA
V
OH
min = 2.15V at I = -1mA
V
OH
min = 2.55V at I = -20µA
V
OH
max = 2.96V
CCCLK O
R
O
#220W
V
OL
max = 0.4V at I = 1mA
V
OH
min = 2.15V at I = -1mA
V
OH
max = 2.73V
CCVCC O
R
O
max = 5W
CCVCCmin = 2.84V,
CCVCCmax = 2.96V
Imax = -20mA
SIM interface
CCGND Ground
CCIN = high, SIM card
holder closed (no card
recognition)
Maximum cable length
200mm to SIM card holder.
All signals of SIM interface
are protected against ESD
with a special diode array.
Usage of CCGND is
mandatory.
/RXD0 O
/TXD0 I
/CTS0 O
/RTS0 I
/DTR0 I
/DCD0 O
/DSR0 O
ASC0
interface
/RING0 O
V
OL
max = 0.2V at I = 1mA
V
OH
min = 2.35V at I = -1mA
V
OH
max = 2.73V
V
IL
max = 0.5V
V
IH
min = 1.95V, V
IH
max = 3.3V
/DTR0, RTS0: Imax = -90µA at V
IN
= 0V
/TXD0: Imax = -30µA at V
IN
= 0V
First serial interface for AT
commands or data stream.
To avoid floating if output
pins are high-impedance,
use pull-up resistors tied to
VDD or pull-down resistors
tied to GND. See Chapter
3.3.2.1.
If unused keep pins open.
/RXD1 O
/TXD1 I
/CTS1 O
ASC1
interface
/RTS1 I
V
OL
max = 0.2V at I = 1mA
V
OH
min = 2.35V at I = -1mA
V
OH
max = 2.73V
V
IL
max = 0.5V
V
IH
min = 1.95V, V
IH
max = 3.3V
I
I
max = -90µA at V
IN
= 0V
Second serial interface for
AT commands.
To avoid floating if output
pins are high-impedance,
use pull-up resistors tied to
VDD or pull-down resistors
tied to GND. See Chapter
3.3.2.1.
If unused keep pins open.