Specifications

Table Of Contents
Cinterion
®
ALAS5V Hardware Interface Description
2.1 Application Interface
67
ALAS5V_HID_v00.030a 2019-03-20
Confidential / Preliminary
Page 41 of 124
2.1.13.2 Remote Wakeup
If no call, data or message transfer is in progress, the external host application may shut down
its own module interfaces or other components in order to save power. If a call, data, or other
request (URC) arrives, the external application can be notified of this event and be woken up
again by a state transition of a configurable remote wakeup line. Available as remote wakeup
lines are some GPIO signals (recommended is GPIO4). Please refer to [1]: AT^SCFG: "Re-
moteWakeUp/..." for details on how to configure these lines for defined wakeup events on
specified device interfaces. Possible states are listed in Table 11.
If no line is specifically configured as remote wakeup signal, the remote USB suspend and re-
sume mechanism as specified in the “Universal Serial Bus Specification Revision 2.0” applies
for the USB interface (see Section 2.1.3). Possible states for the remote wakeup GPIO lines
are listed in Table 11.
2.1.13.3 Firmware Swap
The firmware swap signal FwSwap allows to toggle between two firmware images that may be
available on the module. Setting the FwSwap line to high during the module’s startup phase
triggers the firmware swap. The signal may for instance be used as a fallback or backup solu-
tion in case a possible firmware update is not successful.
Please connect this signal to the external application and implement a test point.
2.1.14 JTAG Interface
For test purposes, e.g., 8D reporting without re-soldering the module from the external appli-
cation.
Table 11: Remote wakeup lines
Signal I/O/P Description
GPIOx O Inactive to active high transition:
0 = No wake up request
1 = The host shall wake up