September 5, 2008
6881076C25-E
3-32
Theory of Operation:
ASTRO Spectra VOCON Board
Table 3-6. U204 (MCU)
U204
Pin #
Description
To/From
B1
PE0
R260
B2
PE1 B SENSE/LBAT/PWR DWN
VR214
C3
PE2 N/C
A3
PE3 EMERG
J901-4
D3
PE4 N/C
A2
PE5
N/C
B3
PE6 SPKR COMMON
R263
C4
PE7 EXT SPKR
R261
B7
4XECLK (7.3726 MHz)
U206-A3
J7
PD0 BOOT DATA IN (RXD)
J501-17 U206
G6
PD1 BOOT DATA OUT (TXD)
J501-18 U208
H6
PD2 MISO
J801-7
J6
PD3 MOSI
J501-9 J801-8
G5
PD4 SPI SCK
J501-8 J801-9
H5
PD5 DA SEL*
J501-13
C5
MOD A
Q204C
B5
MOD B
Q204C
G3
PA0 SCLK
U405-C6
U406-C9
J2
PA1 BOOT MODE
U405
H3
PA2 HREQ*
U405-B10
J3
PA3 SB9600 BUSY
J501-20
G4
PA4 IRQA*
U406-F10
U405-H10
H4
PA5 BOOTSTRAP*
U206-E5
J4
PA6 ECLK SHIFT
Q205B
F5
PA7
N/C
E5
RESET/RESET*
U201-31
U206-E4
E6
PG7 CSPROG*
U206-E3
F8
PG6 CSGEN*
U211-1
G8
PG5 CS101*
U206-G1
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: ......