BandLuxe
®
M280 Series HSUPA Module Datasheet
11
2.2.2
System Interface Signals
Table 2-2 summarizes the signal and power lines that are supported by the system interface.
Table 2-2
System Interface Signals
Signal Group
Signal
Direction
Description
Pin Number
Vcc ( 4pins)
Power source
2, 39, 41, 52
Power
GND ( 13 pins )
Return current path
4, 9, 15, 21, 26,
27, 29, 34, 35,
37, 40, 43, 50
USB
USB_D+,
USB_D-
Input /
output
USB serial data interface compliant to
the USB 2.0 specification
36, 38
Auxiliary
Signals (2.6V
Vdd Compliant)
PERST#
Input
Level trigger signal. Functional reset
to the module
22
WAKE#
Output
Active Low, edge-trigger signal. This
signal is used to request that the
system return from a sleep/suspended
state to service a function initiated
wake event.
1
LED_WWAN#
Output
Active low signals. The signal is used to
allow the module to provide status
indicators via LED devices that will be
provided by the system.
42
Communications
Specific Signals
(2.6V Vdd
Compliant)
W_DISABLE#
Input
Active low, level trigger signal. This
signal is used by the system to disable
radio operation on the module.
20
UIM_PWR (1 pin)
Output
Power source for the UIM.
Compliant to the ISO/IEC 7816-3
specification (VCC).
8
UIM_RESET
Output
UIM reset signal.
Compliant to the ISO/IEC 7816-3
specification (RST).
14
UIM_CLK
Output
UIM clock signal.
Compliant to the ISO/IEC 7816-3
specification (CLK).
12
UIM_VPP
(Not implemented
in M280 series)
Output
Variable supply voltage (e.g.,
programming voltage) for class A
devices. Refer to ISO/IEC 7816-3 for
operating class definitions. This signal is
reserved for future use for devices of
other classes. Compliant to the ISO/IEC
7816-3 specification (VPP).
16
User Identity
Module (UIM)
Signals
UIM_DATA
Input /
output
UIM data signal.
Compliant to the ISO/IEC 7816-3
specification (I/O).
10
PCM_CLK
Output
PCM clock for auxiliary codec port
45
