Mobile Tech Co. Ltd 64MXFWBF110A Manuale Utente
16
PCS1900
<-104dBm
Table
Table
Table
Table11:
11:
11:
11: MD251
MD251
MD251
MD251 receive/transmit
receive/transmit
receive/transmit
receive/transmit frequency
frequency
frequency
frequency
Frequency
Receive
Transmit
GSM850
869~894MHz
824-849MHz
E-GSM900
925~960MHz
800-915MHz
DCS1800
1710~1785 MHz
1805~1800
MHz
PCS1900
1850~1910 MHz
1930~1990
MHz
According to the application, should use GSM900/DCS1800 Dual-band antenna or
GSM850/PCS1900 Dual-band antenna.
GSM850/PCS1900 Dual-band antenna.
3.11.
3.11.
3.11.
3.11. SIM
SIM
SIM
SIM card
card
card
card interface
interface
interface
interface
The MD251 contains a dedicated smart card interface to allow the MCU access to the SIM
card. The SIM interface supports the functionality of the GSM Phase 1 specification and
also supports the functionality of the new GSM Phase 2+ specification for FAST 64 kbps
SIM (intended for use with a SIM application Tool-kit).
The SIM card interface circuitry of PMU meets all ETSI and IMT-2000 SIM interface
requirements. It provides level shifting needs for low voltage GSM controller to
communicate with either 1.8V or 3V SIM cards. All SIM cards contain a clock input, a
reset input, and a bi-directional data input/output. The clock and reset inputs to SIM cards
are level shifted from the supply of digital IO (Vio) of baseband chipset to the SIM supply
(Vsim). The bi-directional data bus is internal pull high with 10kohm resistor.
All
card. The SIM interface supports the functionality of the GSM Phase 1 specification and
also supports the functionality of the new GSM Phase 2+ specification for FAST 64 kbps
SIM (intended for use with a SIM application Tool-kit).
The SIM card interface circuitry of PMU meets all ETSI and IMT-2000 SIM interface
requirements. It provides level shifting needs for low voltage GSM controller to
communicate with either 1.8V or 3V SIM cards. All SIM cards contain a clock input, a
reset input, and a bi-directional data input/output. The clock and reset inputs to SIM cards
are level shifted from the supply of digital IO (Vio) of baseband chipset to the SIM supply
(Vsim). The bi-directional data bus is internal pull high with 10kohm resistor.
All
All
All
All pins
pins
pins
pins that
that
that
that connect
connect
connect
connect to
to
to
to the
the
the
the SIM
SIM
SIM
SIM card
card
card
card (Vsim,
(Vsim,
(Vsim,
(Vsim, SRST,
SRST,
SRST,
SRST, SCLK,
SCLK,
SCLK,
SCLK, SIO)
SIO)
SIO)
SIO) withstand
withstand
withstand
withstand over
over
over
over 5kV
5kV
5kV
5kV
of
of
of
of human
human
human
human body
body
body
body mode
mode
mode
mode ESD.
ESD.
ESD.
ESD. In
In
In
In order
order
order
order to
to
to
to ensure
ensure
ensure
ensure proper
proper
proper
proper ESD
ESD
ESD
ESD protection,
protection,
protection,
protection, careful
careful
careful
careful board
board
board
board
layout
layout
layout
layout is
is
is
is required.
required.
required.
required.
The interface of SIM is as follow table：
Tbale
Tbale
Tbale
Tbale12:
12:
12:
12: The
The
The
The SIM
SIM
SIM
SIM pins
pins
pins
pins on
on
on
on the
the
the
the Module
Module
Module
Module
Num
Name
Function
15
SIM_IO
SIM card data output and input
16
SIM_CLK
SIM card clock output
17
SIM_RST
SIM card RESET output
18
VRSIM
Power supply for SIM card
Table
Table
Table
Table 13:
13:
13:
13: SIM
SIM
SIM
SIM Interface
Interface
Interface
Interface Electrical
Electrical
Electrical
Electrical Specifications
Specifications
Specifications
Specifications
SIM
SIM
SIM
SIM Voltage
Voltage
Voltage
Voltage
Output voltage (V_SIM)
Register
VSIM_SEL=L
VSIM_SEL=L
1.71
1.8
1.89
V
Register
VSIM_SEL=H
VSIM_SEL=H
2.82
3.0
3.18
V
Output current (Isim_max)
20
mA
Line regulation
4
mV
Load regulation
15
mV