Installers Guide to the Bose® Serial interface
June 28, 2011
Bose Confidential Information
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In the formulas below the Frequency is expressed in kilohertz. For example for the USA FM value
displayed on the radio as 87.7 the corresponding actual frequency is 87700 kHz.
Station
= Integer((
Frequency
- <Frequency Start>)/<Frequency Step>) * <Station Step> +
<Station Start>
Frequency
= Integer((
Station
- <Station Start>) / <Station Step) * <Frequency Step> +
<Frequency Start>
6.6.2 Sample Conversions
To convert USA FM fr
equency ―103.3‖, which is 103300 kHz, to a station number:
Station Number = Integer((103300
– 87700) / 200) * 8 + 8
= Integer(15600/200) * 8 + 8
= Integer(78) * 8 + 8
= 78 * 8 + 8
= 624 + 8
= 632
To convert the station number 632 for USA FM to a frequency:
Frequency = Integer((632
– 8) / 8) * 200 + 87700
= Integer(624/8) * 200 + 87700
= Integer(78) * 200 + 87700
= 15600 + 87700
= 103300
6.7 Query Current Tuner Preset
Use this command to obtain the preset number (1-25) associated with the currently tuned station.
If there is no preset associated with the currently tuned station the value returned is zero.
Note: This command is not available in Low Power Mode.
Client sends:
12 00 04 03 05 54 55 4e 45 52 50 52 45 53 45 54 00 4d
Table 6-20 Query Current Tuner Preset Command Format
Byte
Number
Value
(Hex)
Name
Explanation
0
12
Length
The total number of bytes in this packet is 18
1
00
Status
All Status bits must be zero for packets sent by the Client
2-3
04 03
OpCode
The OpCode of the Query Current Tuner Preset command
4
05
Format
Indicates Ascii Payload
5-16
54 55 4e
45 52 50
52 45 53
45 54 00
Name
The zero terminated ascii string ―TUNERPRESET‖
17
4d
Checksum
The exclusive or (XOR) of all bytes in this packet (including
length) that precede the checksum byte
