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CMX838D1 View Datasheet(PDF) - MX-COM Inc

Part Name
Description
MFG CO.
'CMX838D1' PDF : 70 Pages View PDF
FRS/PMR446/GMRS Family Radio Processor
30
5.1.1 8-Bit C-BUS Register Map
CMX838 Advance Information
8 BIT REGISTER
NAME
GENERAL RESET
[Write $01]
SETUP REGISTER
[Write $80]
BIT 7
TX
enable
BIT 6
BIT 5
BIT 4 BIT 3
Input 1 control
N/A
Audio Path Control
Input 2 control
BIT 2
BIT 1
Output control
BIT 0
AUDIO CONTROL
[Write $81]
Audio Filter bypass control
Preemphasis Low-pass
bypass control
High-
pass
bypass
control
AUDIO LEVEL
+/- 7.5dB in 0.5dB steps
RX VOLUME
CONTROL
[Write $82]
Limiter & Limiter Filter
& Deemphasis bypass control
VOLUME CONTROL
+12 to –33dB in 1.5dB steps
AUDIO POWER AND
BW CONTROL
[WRITE $83]
SYNTHESIZER
BASEBAND CLK
CONTROL
[Write $89]
SYNTHESIZER
GENERAL
CONTROL
[Write $8A]
SYNTHESIZER
CHANNEL SEL
[Write $8B]
POWER CONTROL
FOR MOD 1 & 2 AND
MICAMP
POWER
CONTROL FOR
AUDIO FILTERS
AND LIMITER
POWER
CONTROL FOR
VOLUME
CONTROL
AUDIO
BAND-
WIDTH
SEL
UNUSED
SYNTHESIZER &
BASEBAND CLOCK
SOURCE SELECT
SYNTHESIZER
REFERENCE INPUT FREQUENCY
SELECT
XTAL/CLOCK
INPUT
FREQUENCY
SELECT
ENABLE,
POWERSAVE,
&
TEST MODE CONTROL
LOCK DETECTOR
CONTROL
&
IRQ MASK
CHARGE PUMP
CURRENT
HIGH
LOW
polarity
RF SYSTEM
FRS, GMRS, PMR
446, or GENERIC
RESERVED SET TO "0"
CHANNEL SELECTION
INDEXED CONTROL OF VALID FRS,
GMRS & PMR446 RF CHANNELS
IN GENERIC RF SYSTEM MODE (set in [SGC])
SYNTHESIZED FREQUENCY IS SET VIA THESE BITS AND BITS IN [SBCC] & [SIFOS]
REGISTERS
SYNTHESIZER
STATUS
[Read $8C]
Lock
Algorithm
Status
LOCK STATUS OF MOST RECENT 7 PHASE COMPARISONS
TEST 0
[WRITE $90]
SUBAUDIO
GENERAL
CONTROL
[Write $93]
SUBAUDIO STATUS
[Read $94]
[SAS]
8 BIT SUBAUDIO
TASK DATA
[Write $95]
8 BIT SUBAUDIO
TEST DATA
[Write $96]
POWER CONTROL
FOR SUBAUDIO
SYNTHESIZER
IRQ
FLAG
Decode
SYNTHESIZER TEST MODES
SUBAUDIO
IRQ
CONTROL
SUBAUDIO TASK SELECTION
Decoded Tone Index
SUBAUDIO TASK DATA BYTE
SUBAUDIO TEST DATA BYTE
Table 4: 8 Bit Registers
¤2001 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480221.002
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
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