User's Manual
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
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ELS61-AUS Hardware Interface Description
2.1 Application Interface
52
ELS61-AUS_HID_v00.031 2016-06-03
Confidential / Preliminary
Page 33 of 102
2.1.8 GPIO Interface
ELS61-AUS offers a GPIO interface with 22 GPIO lines. The GPIO lines are shared with other
interfaces or functions: Fast shutdown (see Section 2.1.13.4), status LED (see Section
2.1.13.1), the PWM functionality (see Section 2.1.11), an pulse counter (see Section 2.1.12),
ASC0 (see Section 2.1.4), ASC1 (see Section 2.1.5), an SPI interface (see Section 2.1.10).
The following table shows the configuration variants for the GPIO pads. All variants are mutu-
ally exclusive, i.e. a pad configured for instance as Status LED is locked for alternative usage.
After startup, the above mentioned alternative GPIO line assignments can be con-
figured using AT commands (see [1]). The configuration is non-volatile and available after mod-
ule restart.
Table 5: GPIO lines and possible alternative assignment
GPIO Fast Shutdown Status LED PWM Pulse Counter ASC0 ASC1 SPI
GPIO1 DTR0
GPIO2 DCD0
GPIO3 DSR0 SPI_CLK
GPIO4 FST_SHDN
GPIO5 Status LED
GPIO6 PWM2
GPIO7 PWM1
GPIO8 COUNTER
GPIO11
GPIO12
GPIO13
GPIO14
GPIO15
GPIO16 RXD1 MOSI
GPIO17 TXD1 MISO
GPIO18 RTS1
GPIO19 CTS1 SPI_CS
GPIO20
GPIO21
GPIO22
GPIO23
GPIO24 RING0