HUAWEI MC509 Series CDMA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 02 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
25
Table 3-3
Pins on the signal control interface
Pin
No.
Pin Name
I/O
Description
DC Characteristics (V)
Min.
Typ.
Max.
81
POWER_ON_OFF
I
Pin for controlling power-on and
power-off
-
Pulled up on
chip
-
100
RESIN_N
I
Pin for resetting the hardware
–0.3
1.8
2.1
91
LED_STATUS
O
Pin for network status LED
-
-
-
101
LED_MODE
O
Pin for network mode LED
-
-
-
11
WAKEUP_IN
I
H: DTE wakeup MC509.
L: DTE set MC509 to sleep
mode.
–0.3
2.6
2.9
71
WAKEUP_OUT
O
L: default
H: MC509 keeps 1 second high
level to wakeup DTE (e.g.
SMS&VOICE incoming)
–0.3
2.6
2.9
45
W_DISABLE
I
Close wireless communications
–0.3
2.6
2.9
It is recommended that use resistance of 0
Ω in the DTE to isolate signals transmitted from
above pins in Table 3-3 .
3.4.2
Input Signal Control Pins
The MC509 module implements power-on and power-off and resets the hardware
through the input signal control pins.
The power-on, power-off, and reset control parts of the interface of the MC509
module include power-on/power-off interface signal (POWER_ON_OFF) and the
hardware reset interface signal (RESIN_N).
The POWER_ON_OFF pin is used to implement power-on and power-off. If the
POWER_ON_OFF pin is pulled down for at least 0.5s, the module is powered on; if
the POWER_ON_OFF pin is pulled down for at least 3s again, the module is
powered off.
The RESIN_N pin is used to reset the hardware. When the software stops
responding, the RESIN_N pin can be pulled down for 100 ms to reset the hardware.
