CMX138 CML Microcircuits, CMX138 Datasheet - Page 16

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

Audio Scrambler and Sub-Audio Signalling Processor
The analogue gain / attenuation of each input and output can be set individually, with additional Fine Gain
control available via the Programming registers.
See:
7.3.2
The CMX138 operates in one of three modes:
At power-on or following a Reset, the device will automatically enter IDLE mode, which allows for the
maximum powersaving whilst still retaining the capability of monitoring the AuxADC inputs (if enabled). It
is only possible to write to the Programming register whilst in IDLE mode.
See:
© 2008 CML Microsystems Plc
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Analogue Input Gain - $B0 write
Analogue Output Gain - $B1 write
Mode Control
IDLE
Rx
Tx
Mode Control – $C1 write
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D/138_FI1.0/5
CMX138