September 5, 2008
6881076C25-E
3-36
Theory of Operation:
ASTRO Spectra VOCON Board
B5
SC1
U406-J4
B9
SC0
U406-K4
C6
SCLK
U204-G3
U406-C9
A7
TXD/EMC RXD
J801-3
B7
RXD/EMC TXD
J801-4
G9
RESET/DSP RST*
U204-H8
E10
HACK*
R409
B19
HREQ*
U204-H3
E8
HEN*
U206-J7
D9
HR/W*
U204-B6
Table 3-9. VOCON U406 (ADSIC)
U406
Pin #
Description
To/From
D8
PS*
U404-6
U405-C1
G10
WR*
U405-C4
U404-7
U402/3/14-K2
F8
RD*
U405-A3
U404-32
U402/3/14-K6
J9
RSEL
U403-J3
U414-K3
G2
TP1
R407
G1
TP2
N/C
A4
AB1
R402
B8
SEL*/ADSIC SEL*
U204-F7
A8
RST*/ADSIC RST*
U204-G7
F10
IRQA/IRQA*
U204-G4
U405-H10
F9
IRQB/IRQB* 8 kHz
U405-H9
Table 3-8. VOCON U405 (DSP) (Continued)
U405
Pin #
Description
To/From
Содержание ASTRO Digital Spectra
Страница 1: ...ASTRO Digital Spectra and Digital Spectra Plus UHF VHF 800 MHz Mobile Radios Detailed Service Manual ...
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Страница 6: ...September 5 2008 6881076C25 E iv Document History Notes ...
Страница 20: ...xviii List of Tables September 5 2008 6881076C25 E Notes ...
Страница 24: ...September 5 2008 6881076C25 E xxii CommercialWarranty Notes ...
Страница 48: ...September 5 2008 6881076C25 E xlvi Model Numbering Charts and Specifications Notes ...
Страница 142: ...September 5 2008 6881076C25 E 3 82 Theory of Operation Power Amplifiers Notes ...
Страница 218: ...September 5 2008 6881076C25 E 4 76 Troubleshooting Procedures Power Amplifier Procedures Notes ...
Страница 258: ...September 5 2008 6881076C25 E 6 14 Troubleshooting Waveforms ASTRO Digital Spectra Plus VOCON Board Waveforms Notes ...
Страница 434: ...September 5 2008 6881076C25 E Glossary 10 Notes ...
Страница 440: ...Index 6 September 5 2008 6881076C25 E Notes ...
Страница 441: ......