Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.1.1 Pad Assignment
- 2.1.2 Signal Properties
- 2.1.3 USB Interface
- 2.1.4 Serial Interface ASC0
- 2.1.5 Serial Interface ASC1
- 2.1.6 Inter-Integrated Circuit Interface
- 2.1.7 UICC/SIM/USIM Interface
- 2.1.8 Enhanced ESD Protection for SIM Interfaces
- 2.1.9 Digital Audio Interface
- 2.1.10 Analog-to-Digital Converter (ADC)
- 2.1.11 RTC Backup
- 2.1.12 GPIO Interface
- 2.1.13 Control Signals
- 2.1.14 JTAG Interface
- 2.1.15 eMMC Interface
- 2.2 GSM/UMTS/LTE Antenna Interface
- 2.3 GNSS Antenna Interface
- 2.4 Sample Application
- 2.1 Application Interface
- 3 GNSS Interface
- 4 Operating Characteristics
- 5 Mechanical Dimensions and Mounting
- 6 Regulatory and Type Approval Information
- 7 Document Information
- 8 Appendix
Cinterion
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ALAS5V Hardware Interface Description
2.1 Application Interface
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ALAS5V_HID_v00.030a 2019-03-20
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2.1.10 Analog-to-Digital Converter (ADC)
ALAS5V provides four unbalanced ADC input lines: ADC[1-2...4-5]_IN. They can be used to
measure four independent, externally connected DC voltages in the range of 0.1V to 1.7V. As
described in Section 2.2.4 and Section 5.2 they can be used especially for antenna diagnosing.
The AT^SRADC command can be employed to select the ADC line, set the measurement
mode and read out the measurement results.
2.1.11 RTC Backup
The internal Real Time Clock of ALAS5V is supplied from a separate voltage regulator in the
power supply component which is also active when ALAS5V is in Power Down mode and
BATT+ is available.
An alarm function is provided that allows to wake up ALAS5V. When the alarm time is reached
the module wakes up into normal operating mode (default), or to the functionality level that was
valid before power down. For example, if the module was in Airplane mode before power down,
the module will wake up without logging on to the GSM/UMTS/LTE network.
2.1.12 GPIO Interface
ALAS5V has 15 GPIOs for external hardware devices. Each GPIO can be configured for use
as input or output. All settings are AT command controlled.
The IO port driver has to be opened before using and configuring GPIOs. Before changing the
configuration of a GPIO pin (e.g. input to output) the pin has to be closed. If the GPIO pins are
not configured or the pins/driver were closed, the GPIO pins are high-Z with pull down resistor.
If a GPIO is configured to input, the pin has high-Z without pull resistor.
If ALAS5V is in power save (SLEEP) mode a level state transition at GPIO3, GPIO5, GPIO6,
GPIO7, GPIO8, or GPIO16 will wake up the module, if such a GPIO was configured as input
using AT^SCPIN. To query the level state the AT^SCPOL command may be used. For details
on the mentioned AT commands please see [1].
Table 10 shows GPIO lines with possible alternative functionalities, and comments on these
optional assignments.
Table 10: GPIO lines and possible alternative assignment
GPIOs /
Alternative
signal names
Description of possible alternative signals
GPIO1 /
DR_SYNC
DR_SYNC. GPIO1 can also be configured as DR_SYNC line, i.e., a one pulse per
second (1PPS) output for external dead reckoning applications. For more information
see Chapter 3.