Sierra Wireless Q2687 Manuel D’Utilisation
Wireless CPU Quik Q2687
Interfaces
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WA_ENG_Q2687_PTS_001-002
September 11, 2006
3 Interfaces
3.1 General Purpose Connector (GPC)
A 100-pin connector is provided to interface the Wireless CPU Quik Q2687 with a
board containing a serial or parallel LCD module, a keyboard, a SIM connector, and a
board containing a serial or parallel LCD module, a keyboard, a SIM connector, and a
battery connection.
The interfaces available on the GPC are described below.
chapter
Name
Driven by
AT commands
Driven by
Open AT
®
3.4 Sérial
Interface
X
3.5 Parallel
Interface
X
3.6 Keyboard
Interface
X
X
3.7 Main
Sérial
Link
X
X
3.8
Auxiliary Sérial Link
X
X
3.9 SIM
Interface
X
X
3.10
Général Purpose IO
X
X
3.11
Analog to Digital Converter
X
X
3.12
Analog audio Interface
X
X
3.13
PWM / Buzzer Output
X
X
3.14 Battery
Charging
Interface
X
X
3.18 External
Interruption
X
X
3.20
BAT-RTC (Backup Battery)
X
X
3.21 FLASH-LED
signal
X
X
3.22
Digital Audio Interface (PCM)
X
X
3.23 USB
2.0
Interface
X
X
3.2 Power Supply
The power supply is one of the key issues in the design of a GSM terminal.
Due to the burst emission mode used in GSM / GPRS, the power supply must be able
to deliver high current peaks in a short time. During the peaks, the ripple (Uripp) on
to deliver high current peaks in a short time. During the peaks, the ripple (Uripp) on
the supply voltage must not exceed a certain limit (see Table 1 Power supply
voltage).
voltage).