MX828 查看數據表（PDF） - MX-COM Inc
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MX828 Datasheet PDF : 34 Pages
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CTCSS/DCS/SelCall Processor
5
3. External Components
MX828 PRELIMINARY INFORMATION
XTAL
X1 C1
R1
C2
XTAL/CLOCK
VDD
VDD
C6
XTAL 1
24
VDD
VSS
XTAL/CLOCK 2
23 MOD2
SERIAL CLOCK 3
22 MOD1
"C-BUS" R5
INTERFACE
COMMAND DATA
REPLY DATA
CS
IRQ
4
21 TX SUB AUDIO OUT
5
20 MOD1 IN
6
7
MX828 19
18
SUM OUT
SUM IN
R6
C3
R2
COMPOUT 8
17 TX AUDIO OUT
R7
COMPIN 9
16 RX AUDIO OUT
A/D CAP1 10
15 RX AMP OUT
R3
A/D CAP2 11
14 RX AMP IN
C5
VSS 12
13
VBIAS
C8 C9
C4 R4
C7
Input from
Demodulator
Figure 2: Recommended External Components
R1
R2
R3
R4 Note 2
R5
R6 Note 1
R7 Note 1
C1
C2
1M:
100k:
100k:
22k:
22pF
22pF
±5%
±10%
±10%
±10%
±10%
±10%
±10%
±20%
±20%
C3
100pF
C4
0.1µF
C5
100pF
C6
0.1µF
C7 Note 2
C8
0.1µF
C9
1.0µF to 3.3µF
X1 Note 3
4.032MHz
Table 2: External Components
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±100ppm
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 336 744-5050 Fax: 336 744-5054
Doc. # 20480161.002
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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