Cambridge Audio Azur 540R V3 Manual

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Azur 540R v3 Serial Control Protocol V1.0
1.1 RS232 Protocol
The protocol is accessed via the RS232 protocol, i.e. a PC’s rear panel com port.
Notes:
1) All data consists of ASCII bytes.
2) Settings for RS232 comm port are 9600,N,8,1 with no handshaking.
3) CR is carriage return, ASCII value 13 decimal.
Command Packet Structure:
Header Command Command Command Footer
Group Number Data
# 1 to 11 , 01 to 19 , XXXX CR
byte num: 1 1 1 2 1 XX 1

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1.2 Command Groups
Commands are split into the following groups:
Command
Group Command Description
1 Amplifier Commands
2 Source Commands
3 Tuner Commands
4 Audio Processing Commands
5 Version Commands
6 Replies from Amplifier Commands
7 Replies from Source Commands
8 Replies from Tuner Commands
9 Replies from Audio Processing
Commands
10 Replies from Version Commands
11 Error Messages

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1.3 Commands and Messages
1.3.1 Group 1 - Amplifier Commands
Command Command Description Command Data Example
Number
01 Power State 0 - Standby, 1 - On #1,01,0\r - Put 540R in standb
y
02 Volume Up No Data #1,02\r - Volume up
03 Volume Down No Data #1,03\r -Volume down
04 Bass Up No Data #1,04\r - Bass up
05 Bass Down No Data #1,05\r - Bass down
06 Treble Up No Data #1,06\r - Treble up
07 Treble Down No Data #1,07\r - Treble down
08 Sub On No Data #1,08\r - Sub woofer on
09 Sub Off No Data #1,09\r - Sub woofer Off
10 Set LFE trim 0 = 0db, 1 = -1db… -10 = -10dB #1,10, 03\r - LFE trim set to -3dB
11 Mute State 0 - Off, 1 - On #1,11,00\r - 540R mute off
12 Dynamic Range Se
t
0 - 0/4, 1 - 1/4, 2 - 2/4, 3 - 3/4, 4 - 4/4 #1,12, 02\r - Set dynamic range limit to 2/4
13 OSD On No Data #1,13/r - OSD on
14 OSD Off No Data #1,14/r - OSD off
15 OSD Up No Data #1,15/r - OSD up
16 OSD Down No Data #1,16/r - OSD down
17 OSD Lef
t
No Data #1,17/r - OSD left
18 OSD Right No Data #1,18/r - OSD right
19 OSD Enter No Data #1,19/r - OSD enter

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1.3.2 Group 2 - Source Commands
Command Command Description Command Data Example
Number
01 Input Selec
t
1 - DVD, 2 - Video 1, 3-Tuner, 4 - Video2, #2,01,02\r - Select Video 1
5 - Video3, 6 - Tape/MD/CDR, 7 - CD/Aux,
8 - 6.1 Direct In
02 Input Select Up No Data #2,02\r - Next input up
03 Input Select Down No Data #2,03\r -Next input down
04 Set input mode 0 - analogue, 1 - Digital #2,04,01\r - digital source selected

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1.3.3 Group 3 – Tuner Commands
Command Command Description Command Data Example
Number
01 Tuner Stereo/Mono 0 - Stereo, 1 = Mono #3,01,01\r -
t
uner in mono
02 Frequency Up No Data #3,02\r - Frequency up
03 Frequency down No Data #3,03\r - Frequency down
04 Up No Data #3,04\r - Tuner up
05 Down No Data #3,05\r - Tuner down
06 Tuner Mode 1 - Frequency up/down, 2 - search up/down,
3 - Preset up/down
#3,06,03\r - Tuner up/down control presets
07 Tuner Search Stop No Data #3,07\r - Tuner search stop
08 Tuner Auto Search No Data #3,08\r - Tuner auto search
09 Tuner Band 0 - FM, 1 = AM #3,09,01\r -
t
uner in AM mode
10 Tuner PTY select
1- News, 2-Affairs, 3-Info, 4-Sport, 5-Educate,
6-Drama, 7-Culture, 8-Science, 9-Varied, 10-
Pop, 11-Rock, 12-MOR, 13-Light, 14-Classics,
15-Other
#3,10,11\r - PTY Rock selected
11 Store Station 1 - preset 1, 2 - preset 2, ….. 15 - preset 15 #3,11,12\r - Store current frequency in preset 12
12 Get Preset 1 - preset 1, 2 - preset 2, ….. 15 - preset 15 #3,12,6\r - Set tuner to preset 6
13 Tuner Display mode 1-Frequency, 2-Program name, 3-Program
Type, 4-Clock time, 5-Radiotext
#3,13, 04\r - Display in clock time mode
14 Get Frequenc
y
No Data #3,14\r
15 Get Station name No Data #3,15\r
16 Get PTY No Data #3,16\r
17 Stop PTY Select No Data #3,17/r

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1.3.4 Group 4 - Audio Processing Commands
Command Command Description Command Data Example
Number
01 Set Audio to Stereo 00 = Stereo, 01 = Stereo + sub #4,01,01\r - Audio set to stereo plus sub mode
02 Set PLII/Neo No Data #4,02/r - Cycles to next mode (same as pressing
PLII/NEO button)
03 Set DD/DTS No Data #4,03/r - Cycles to next mode (same as pressing
DD/DTS button)
04 Get Current PLII/Neo/DSP mode No Data #4/04\r
05 Get current DD/DTS mode No Data #4,05\r
06 Set DSP No Data #4,06\r - Cycles to next mode (same as pressing the
DSP button)
1.3.4 Group 5 - Version Commands
Command Command Description Command Data Example
Number
01 Get Main Software Version No Data #5,01,\r - Get software version
02 Get Protocol Version No Data #5,02,\r - Get protocol version

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1.3.6 Group 6 - Replies from Amplifier Commands
Command Command Description Command Data Example
Number
01 Power State 0 - Standby, 1 - On #6,01,0\r - Put 640R in standb
y
02 Volume Up -90 to 00 (where -90 = mute, 00 = max
volume #6,02,-16\r - Vol = -16dB
03 Volume Down -90 to 00 (where -90 = mute, 00 = max
volume #6,03,-16\r - Vol = -16dB
04 Bass Up -10 to 10 #6,04,-6\r - Bass = -6db
05 Bass Down -10 to 10 #6,05,-6\r - Bass = -6db
06 Treble Up -10 to 10 #6,06,-7\r -
t
reble = -7db
07 Treble Down -10 to 10 #6,07,-7\r -
t
reble = -7db
08 Sub On No Data #6,08\r - Sub woofer on
09 Sub Off No Data #6,09\r - Sub woofer off
10 Set LFE trim 0 = 0db, 1 = -1db… -10 = -10dB #6,10, 03\r - LFE trim set to -3dB
11 Mute State 0 - Off, 1 - On #6,11,00\r - 540R mute off
12 Dynamic Range Se
t
0 - 0/4, 1 - 1/4, 2 - 2/4, 3 - 3/4, 4 - 4/4 #6,12, 02\r - Set dynamic range limit to 2/4
13 OSD On No Data #6,13\r - OSD On
14 OSD Off No Data #6,14\r - OSD Off
15 OSD Up No Data #6,15\r - OSD up
16 OSD Down No Data #6,16\r - OSD down
17 OSD Lef
t
No Data #6,17\r - OSD Lef
t
18 OSD Right No Data #6,18\r - OSD Right
19 OSD Enter No Data #6,19\r - OSD Enter

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1.3.7 Group 7 - Replies from Source Commands
Command Command Description Command Data Example
Number
01 Input Selec
t
1 - DVD, 2 - Video 1, 3-Tuner, 4 - Video2, #7,01,2\r - Video 1 selected
5 - Video3, 6 - Tape/MD/CDR, 7 - CD/Aux,
8 - 6.1 Direct In
02 Input Select Up No Data #7,02\r - Next input up
03 Input Select Down No Data #7,03\r -Next input down
04 Set input mode 0 - analogue, 1 - Digital #7,04,01\r - digital input selected

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1.3.8 Group 8 - Replies from Tuner Commands
Command Command Description Command Data Example
Number
01 Tuner Stereo/Mono 0 - Stereo, 1 = Mono #8,01,01\r -
t
uner in mono
02 Frequency Up No Data #8,02\r - Frequency up
03 Frequency down No Data #8,03\r - Frequency down
04 Up 1 - command complete, 2 -
t
uner searchin
g
#8,04,02\r - Tuner searchin
g
05 Down 1 - command complete, 2 -
t
uner searchin
g
#8,05,01\r - Tuner down executed
06 Tuner Mode 1 - Frequency up/down, 2 - search up/down,
3 - Preset up/down
#8,06,03\r - Tuner up/down control presets
07 Tuner Search Stop xxx.x
x
#8,07,09525\r - Current frequency is 95.25MHz
08 Tuner Auto Search No Data #8,08\r - Tuner auto search
09 Tuner Band 0 - FM, 1 = AM #8,09,01\r -
t
uner in AM mode
10 Tuner PTY select
1- News, 2-Affairs, 3-Info, 4-Sport, 5-Educate,
6-Drama, 7-Culture, 8-Science, 9-Varied, 10-
Pop, 11-Rock, 12-MOR, 13-Light, 14-Classics,
15-Other, 16-Searching in progress, 17-
Search failed
#8,10,11\r - PTY Rock selected
11 Store Station 1 - preset 1, 2 - preset 2, ….. 15 - preset 15 #8,11,12\r - Store current frequency in preset 12
12 Get Preset 1 - preset 1, 2 - preset 2, ….. 15 - preset 15 #8,12,6\r - Set tuner to preset 6
13 Tuner Display mode 1-Frequency, 2-Program name, 3-Program
Type, 4-Clock time, 5-Radiotext #8,13, 04\r - Display in clock time mode
14 Get Frequenc
y
xxx.x
x
#8,14,09525\r - Current frequency is 95.25MHz
15 Get station name xxxxxxx
x
#8,15,Radio666\r - Current station name is
Radio666. If no RDS station name available, return
with string of stars, i.e. ********
16 Get PTY
0-No Pty,1- News, 2-Affairs, 3-Info, 4-Sport, 5-
Educate, 6-Drama, 7-Culture, 8-Science, 9-
Varied, 10-Pop, 11-Rock, 12-MOR, 13-Light,
14-Classics, 15-Other
#8,16,11\r - Current PTY is Rock Music
17 Stop PTY Select No Data #8,17\r

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1.3.9 Group 9 - Replies from Audio Processing Commands
Command Command Description Command Data Example
Number
01 Set Audio to Stereo 00 = Stereo, 01 = Stereo+ SW #9,01,01\r - Audio set to stereo mode plus sub
02 Set PLII/Neo/DSP xxxxxxxx #9,02, PCM + PLIIx Movie \r - Describes the mode it's
just switched to exactly as on front panel
03 DD/DTS xxxxxxxx
#9,03, Dolby Digital (2/0) \r - Describes the mode it's
just switched to, exactly as displayed on the front
panel
04 Get current PLII/Neo/DSP mode xxxxxxxx #9,04, PCM + PLIIx Movie \r - Describes the current
mode
05 Get current DD/DTS mode xxxxxxxx #9,05, Dolby Digital (2/0) \r - Describes the current
mode
1.4.0 Group 10 - Replies from Version Commands
Command Command Description Command Data Example
Number
01 Get Main Software Version X.X #10,01,1.2\r - Software is version 1.2
02 Protocol Version X.X #10,02,1.6\r - Protocol is version 1.6

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1.4.1 Group 11 - Error Messages
Command
Number Command Description Command Data Example
01 Command Group Unknown No Data #11,01\r - Command group error
02 Command Number in Group Unknown No Data #11,02\r - Command number error
03 Command Data Error No Data #11,03\r - Command data error
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Cambridge Audio Ltd 2007