Rainbow-electronics GM862-QUAD-PY Instrukcja Użytkownika Pobierz pdf (Strona 36)

GM862-QUAD / PY Hardware User Guide

1vv0300748 Rev. 5 - 20/09/07

8 Audio Section Overview

The Base Band Chip of the GM862-QUAD / PY Telit Module provides two different audio blocks; both

in transmit (Uplink) and in receive (Downlink) direction:

• “MT lines” should be used for handset function,

• “HF lines” is suited for hands -free function (car kit).

These two blocks can be active only one at a time, selectable by AXE hardware line or by AT

command.

The audio characteristics are equivalent in transmit blocks, but are different in the receive ones and

this should be kept in mind when designing.

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Rainbow-electronics GM862-QUAD-PY Instrukcja Użytkownika Strona 36