User's Manual

AnyDATA.NET Inc. AnyTime AnyPlace Any Wireless Data Solution
TM
4.5 General Purpose Interface
The general purpose interface consists of 11 user-definable bi-directional pins.
Each GPIO pin can be configured as an input interrupt source. In addition, some GPIO pins can be
used as output control pins from the module. The user can define these pins properly as follows.
Table 4-6 General Purpose Interface Pinouts
NAME
PIN NUMBER CHARACTERISTIC
GPIO_INT15 24 Configured as a pull-up, Bi-directional
GPIO_INT45 33 Configured as a pull-up, Bi-directional
GPIO_INT17 68 Configured as a pull-up, Bi-directional
GPIO_INT04 69 Configured as a pull-down, Bi-directional
GPIO_INT16 70 Configured as a pull-down, Bi-directional
GPIO_INT09 65 Configured as a pull-down, Bi-directional
GPIO_INT10 66 Configured as a pull-up, Bi-directional
GPIO_INT13 93 Configured as a pull-up, Bi-directional
GPIO_INT49 29 Configured as a pull-down, Bi-directional
GPIO_INT02 95 Configured as a pull-down, Bi-directional
GPIO_INT18 32 Configured as a pull-down, Bi-directional
4.6 External Hardware Reset and Power Down Registration
4.6.1 External Hardware Reset (Pin #31)
There are two types of resets that the user can employ to restart the module. The first type will reset
the MSM and the memory and is performed when the user gives the AT command, AT+RESET, to the
MSM. Another way to reset the module is by using the external hardware reset. This type of reset will
reset the hardware as well as the MSM and the memory. The flash memory will be the only information
that is kept. To perform an external hardware reset, make sure the module has powered on and is not in
the initialization stage, and then pull low the external hardware reset pin (Pin #31) for 200ms to 500ms.
Keep the external hardware reset pin high or floating when the module is initializing and booting up as
well as during normal operation. This pin is internally pulled up to +3.0V.
4.6.2 Power Down Registration
Before DTG2000-Dual V2.0 is powered off, it has to send power down registration message to the
CDMA base station to help the base station to maximize its capacity. Depending on air interface
environment, it may take 12 seconds at maximum according to CDMA technical standard.
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AD-2001-06-28 Ver 1.1
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