CMX838 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX838' PDF : 71 Pages View PDF
FRS/PMR446/GMRS Family Radio Processor
CMX838
5.1.2.7 SYNTHESIZER BASEBAND CLK CONTROL Register ($89)
CLOCK SOURCE
Bit 7 and Bit 6
D7 D6
Description
0
0 Clock sources off (chip mostly powered down)
0
1 Baseband clock source from XTAL, Synthesizer reference clock from REFIN
1
0 Baseband and Synthesizer Reference clock from REFIN
XTAL Amplifier Disabled
1
1 Baseband and Synthesizer Reference clock from REFIN
XTAL Amplifier Enabled
REFIN Frequency
Bit 5, 4, 3, and 2
D5 D4 D3 D2
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
REFIN frequency (MHz)
4.0
8.0
9.6
12.0
12.8
14.4
16.8
24.0
10.25
10.475
20.95
21.25
N/A
XTAL/CLOCK
FREQUENCY
Bit 1 and 0
D1 D0
0
0
0
1
1
0
1
1
XTAL/CLOCK frequency (MHz)
4.0
8.0
9.6
12.0
Table 12: SYNTHESIZER BASEBAND CLK CONTROL Register ($89)
2003 CML Microsystems Plc
37
D/838/8
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