6881076C25-E
September 5, 2008
Theory of Operation:
ASTRO Spectra VOCON Board
3-33
G7
PG4 ADSIC RST*
U406-A8
F7
PG3 ADSIC SEL*
U406-B8
H8
PG2 DSP RST*
U405-G9
F6
PG1 ROSC/PSC CE*
J501-12
H7
PG0 SYN SEL*
J501-11
B6
R/W*
U405-D9
U206-B3
A5
ECLK (1.8432 MHz)
U206-A4
E8
XIRQ*
R233
E7
IRQ*
U206-E2
A6
EXTAL 7.3728 MHz
Y201
A7
XTAL
Q205C
Table 3-7. U206 (SLIC)
U206
Pin #
Description
To/From
F3
PH0
N/C
F4
PH1
N/C
F2
PH2
N/C
H1
PH3
N/C
G3
PH4
N/C
H2
PH5 INT PTT*
J501-30
U206-H2
H3
PH6 EMC REQ
J801-11
K2
PH7 LOCK DET*
J501-10
U302-41
CR502
B4
PJ0 MOB IRQ*
J501-26
D5
PJ1 VIP IN2
J501-25
A5
RS232 DATA OUT
J501-43
B6
PJ3 CTSOUT*
J501-5
Table 3-6. U204 (MCU) (Continued)
U204
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 ...
Страница 2: ......
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: ......