CMX138 CML Microcircuits, CMX138 Datasheet - Page 3

• Manufacturer Part Number: CMX138
• Description: Audio Scrambler and Sub-Audio Signalling Processor
• Manufacturer: CML Microcircuits

Audio Scrambler and Sub-Audio Signalling Processor
© 2008 CML Microsystems Plc
Table
10 Application Notes .................................................................................................................59
11 Performance Specification ..................................................................................................61
Table 1 Xtal/clock frequency settings for Program Block 3 .......................................................... 13
Table 2 DCS Codes and CTCSS Tones........................................................................................ 25
Table 3 DCS Modulation Modes ................................................................................................... 27
Table 4 DCS 23 Bit Codes............................................................................................................ 28
9.2
10.1
11.1
11.2
11.3
9.1.1
9.1.2
9.1.3
9.1.4
9.1.5
9.1.6
9.1.7
9.1.8
9.1.9
9.1.10 AuxADC threshold data - $B5 write ....................................................................45
9.1.11 Power Down Control - $C0 write ........................................................................45
9.1.12 Mode Control – $C1 write ...................................................................................46
9.1.13 Audio Control – $C2 write ...................................................................................46
9.1.14 Tx In-band Tone - $C3 write ...............................................................................47
9.1.15 Status – $C6 read ...............................................................................................47
9.1.16 Programming Register – $C8 write.....................................................................48
9.1.17 Scrambler Inversion Frequency – $CB write ......................................................48
9.1.18 Tone Status - $CC read ......................................................................................48
9.1.19 Audio Tone - $CD: 16-bit write-only....................................................................49
9.1.20 Interrupt Mask - $CE write ..................................................................................50
9.1.21 Reserved - $CF write ..........................................................................................50
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
9.2.6
10.1.1 Rx mode:.............................................................................................................59
10.1.2 Tx mode: .............................................................................................................59
11.1.1 Absolute Maximum Ratings ................................................................................61
11.1.2 Operating Limits..................................................................................................61
11.1.3 Operating Characteristics ...................................................................................62
11.1.4 Parametric Performance .....................................................................................67
Programming Register Operation..............................................................................51
Script files for use with the PE0001...........................................................................59
Electrical Performance ..............................................................................................61
C-BUS Timing............................................................................................................70
Packaging..................................................................................................................71
Reset Operations.................................................................................................38
General Reset - $01 write....................................................................................38
AuxADC and TX MOD mode - $A7 write ............................................................40
AuxDAC control / data - $A8 write.......................................................................40
AuxADC data - $A9 read .....................................................................................41
System CLK 1 PLL data - $AB write ...................................................................42
System CLK 1 REF - $AC write...........................................................................42
Analogue Input Gain - $B0 write .........................................................................43
Analogue Output Gain - $B1 write.......................................................................44
Program Block 0 – reserved ................................................................................52
Program Block 1 – In-band Tone Setup: .............................................................52
Program Block 2 – CTCSS and DCS Setup........................................................53
Program Block 3 – AuxDAC, RAMDAC and Clock control: ................................55
Program Block 4 – Gain and Offset Setup: .........................................................56
Initialisation of the Programming Register Blocks:..............................................58
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D/138_FI1.0/5
CMX138
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