Table 3-6. U204 (Mcu) - Motorola ASTRO Digital Spectra Plus Detailed Service Manual
Uhf & vhf 800 mhz mobile radios
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Also See for ASTRO Digital Spectra Plus:
- Service manual (426 pages) ,
- User manual (174 pages) ,
- Instruction manual (114 pages)
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3-32
U204
Pin #
B1
B2
C3
A3
D3
A2
B3
C4
B7
J7
G6
H6
J6
G5
H5
C5
B5
G3
J2
H3
J3
G4
H4
J4
F5
E5
E6
F8
G8
September 5, 2008
Table 3-6. U204 (MCU)
Description
PE0
PE1 B SENSE/LBAT/PWR DWN
PE2
PE3 EMERG
PE4
PE5
PE6 SPKR COMMON
PE7 EXT SPKR
4XECLK (7.3726 MHz)
PD0 BOOT DATA IN (RXD)
PD1 BOOT DATA OUT (TXD)
PD2 MISO
PD3 MOSI
PD4 SPI SCK
PD5 DA SEL*
MOD A
MOD B
PA0 SCLK
PA1 BOOT MODE
PA2 HREQ*
PA3 SB9600 BUSY
PA4 IRQA*
PA5 BOOTSTRAP*
PA6 ECLK SHIFT
PA7
RESET/RESET*
PG7 CSPROG*
PG6 CSGEN*
PG5 CS101*
Theory of Operation: ASTRO Spectra VOCON Board
To/From
R260
VR214
N/C
J901-4
N/C
N/C
R263
R261
U206-A3
J501-17 U206
J501-18 U208
J801-7
J501-9 J801-8
J501-8 J801-9
J501-13
Q204C
Q204C
U405-C6
U406-C9
U405
U405-B10
J501-20
U406-F10
U405-H10
U206-E5
Q205B
N/C
U201-31
U206-E4
U206-E3
U211-1
U206-G1
6881076C25-E
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