u-blox Malmo AB 072002 사용자 설명서
Utfärdare / Issued by
Datum / Date
Beteckning / Ref.
Sida / Page
Mats Andersson
2005-03-30
cBProject-0503-17 (1)
12 (27)
Ärende / Subjekt
Godkänd av / Approved by
WCS Module User Manual
Template update: 00-12-01
Level 2 (below 3.5 V). Two low battery sounds are played and two red flashes on the LED PIOs are
displayed periodically (every 60 s). Called IND-Battery2.
displayed periodically (every 60 s). Called IND-Battery2.
Level 3 (below 3.4 V). Three low battery sounds are played and three red flashes on the LED PIOs
are displayed periodically (every 60 s). Called IND-Battery3.
are displayed periodically (every 60 s). Called IND-Battery3.
When the battery voltage goes below 3.3 V the receiver is shut down.
3.2.11 Volume
Control
There is NO volume control management available on the Bluetooth Unit. All volume control is
performed locally on the receiver by the receiver’s audio electronics. When the VOL+ and VOL-
inputs are activated in connected mode (AV, Phone and Intercom state), no actions are taken by the
Receiver Unit.
performed locally on the receiver by the receiver’s audio electronics. When the VOL+ and VOL-
inputs are activated in connected mode (AV, Phone and Intercom state), no actions are taken by the
Receiver Unit.
3.3 Functional requirements for the Base Unit
3.3.1 General
The Base Unit is using the same Bluetooth unit as the Receivers but with a different firmware.
The Base Unit is using the same Bluetooth unit as the Receivers but with a different firmware.
3.3.2 Bluetooth Profiles Used and Required
The Base Unit functionality is developed using the Advanced Audio Distribution Profile, acting as an
Audio Source, see reference [2].
The Base Unit functionality is developed using the Advanced Audio Distribution Profile, acting as an
Audio Source, see reference [2].
3.3.3 General Interface
The Base Unit communicates to its host using programmable inputs and outputs. See Figure 1 for an
overview of how the Bluetooth unit is interfacing other parts of the base unit electronics.
The Base Unit communicates to its host using programmable inputs and outputs. See Figure 1 for an
overview of how the Bluetooth unit is interfacing other parts of the base unit electronics.
It is using the same basic inputs as the Receiver (see section General Module Interface) with the
following additional input:
following additional input:
•
A navigation indication input (NAVI-IND) later called NI.
It is using the same basic indicators as the Receiver (see section General Module Interface) with the
following additional indicators:
following additional indicators:
•
LED-Success. Indicated by three green flashes on the LED PIOs.
•
LED-Fail. Indicated by three red flashes on the LED PIOs.
3.3.4 Base Unit Operation States
The Base Unit may be in three different states:
The Base Unit may be in three different states:
1. Idle state. This is the initial state. No communication activity. Indicated by LED-Idle.
2. AV state. A HiFi quality sound session is active. Indicated by LED-Connect.