CMX838D1 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX838D1' PDF : 71 Pages View PDF
FRS/PMR446/GMRS Family Radio Processor
Setup, Address $80
76543210
MICOUT 3
MICIN 4
-
+
Vbias
AUX I/O 2
RXIN 1
VDD
VDD 22
VSS 19
VSS
MICOUT 3
MICIN 4
-
+
Vbias
AUX I/O 2
RXIN 1
VDD
VDD 22
VSS 19
VSS
preemph
HPF
BOUT AOUT
27 28
AIN
BIN
25 24
LIM
LPF
voltage ref
LPF
BPF
LPF
CTCSS encode
audio tone encode
1
0
CTCSS decoders
voltage
ref
Synthesizer
offset
+
Vbias
Vbias
Figure 43: Setup, $80
deemph
0°/180°
phase
Audio Control,
Address $81
76543210
RX Audio Level Control,
Address $82
76543210
preemph
HPF
BOUT AOUT
27 28
AIN
BIN
25 24
voltage ref
LPF
BPF
LPF
CTCSS encode
audio tone encode
1
0
CTCSS decoders
voltage
ref
RX Notone / TX Duration
timer
LIM
LPF
Vbias
deemph
CMX838
RXOUT 23
TXMOD1 21
RXOUT 23
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Subaudio Analog Control, Address $97
Figure 44: Audio ($81), RX Audio Level ($82) and Subaudio Analog ($97) Control
2003 CML Microsystems Plc
56
D/838/8
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