
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
17 of 21
4. Transient reboot mode (recommended), is a more advanced combination
of modes 1 and 2, plus some additional intelligence. The device starts up
in shallow-reset mode initially, so that after a low battery shutdown or
transient shutdown, the device immediately restarts when the supply
voltage rises above the turn-ON threshold. Once the device restarts,
deep-reset mode is applied and the device operates in the memory that
was last active when the shut down occurred. Additionally, the maximum
output level is reduced through a 2 dB reduction of the AGCo and peak
clipper. This operating condition is defined as transient reboot mode. The
device operates in transient reboot mode (meaning deep-reset mode and
maximum output reduction are applied) while monitoring the supply
voltage. If the supply voltage remains above the turn-on threshold for at
least 30 seconds, the device is allowed to exit transient reboot mode. The
device returns to mode and the maximum output is restored.
Generally, any low battery shutdown or transient shutdown that occurs while in
shallow-reset mode (or while in the shallow-reset mode component of mixed mode
or transient reboot mode) results in the Advanta hybrid restarting into the memory
that was last active when the shut down occurred. The Advanta hybrid has this
memory restart capability for up to three memories. A restart in any memory
beyond the first three memories causes the device to restart in the initial memory,
similar to the behavior when a battery is first connected. The transient reboot mode
described above also applies to up to three memories. Any additional memories
use the shallow-reset mode behaviour, and restarts in the initial memory after a
shutdown.
7.14 Telecoil Path
The telecoil input is calibrated during the Cal/Config process. To compensate for
the telecoil/microphone gain mismatch, the telecoil gain is adjusted to match the
microphone gain.