Baseband Processor For Mixed Mode Land Mobile Radio
CMX880
$C2 RECEIVE MODE CONTROL: 16-bit write-only
15
14
13
12
11
10
9
8
Bit:
En C4FM
En FFSK
1200b
En FFSK
2400b
En CTCSS
En DCS
True
En DCS
Inverse
En Selcall
Auto
Detect
Mode
7
6
5
4
3
2
1
0
Bit:
Voice Filter
Voice EN
C4FM RX Mode
RX EN
Bit
0
Name
Function:
Rx Enable
0
1
Disable all receiver functions.
Enable selected receiver functions. Processing of enabled
signals continues until the receiver is disabled.
1,2,3
4
C4FM Rx Mode
Voice Enable
These bits select the clock and level tracking modes.
0
1
Disable voice signal routing to the AUDIO output. Decoded
voice data can still be read over the “C-BUS”or FSB.
Enable routing of voice signal to AUDIO ouput.
5,6,7
Voice Filter Mode
These bits select the type of filtering (including de-emphasis)
that is applied to the voice band signal prior to outputting to the
AUDIO output, “C-BUS”or FSB.
8
Auto Detect
Mode
This bit controls the transition from the signal type identification
phase to the signal decoding phase.
9
En Selcall
0
1
Disable Selcall detection.
Enable detect and receive Selcall signals.
10
11
12
13
14
En DCS
Inverse
0
1
Disable DCS Modulation Type B detection.
Enable detect and receive DCS Modulation Type B signals.
En DCS
True
0
1
Disable DCS Modulation Type A detection.
Enable detect and receive DCS Modulation Type A signals.
En CTCSS
0
1
Disable CTCSS detection.
Enable detect and receive CTCSS signals.
En FFSK 2400b
En FFSK 1200b
0
1
Disable FFSK 2400b detection.
Enable detect and receive FFSK 2400b signals.
0
1
Disable FFSK 1200b detection.
Enable detect and receive FFSK 1200b signals.
15
En C4FM
0
1
Disable C4FM detection.
Enable detect and receive C4FM/CQPSK signals.
ã 2001 Consumer Microcircuits Limited
54
D/880/1
CMLMICRO [ CML MICROCIRCUITS ]
