Motorola ASTRO Digital Spectra Plus Service Manual page 95
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Also See for ASTRO Digital Spectra Plus:
- Detailed service manual (442 pages) ,
- Service manual (248 pages) ,
- User manual (174 pages)
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Theory of Operation: ASTRO Spectra VOCON Board
U406
Pin #
F2
C9
C10
C1
B5
B1
B2
L3
J4
K4
H1
H2
G3
C8
C3
B6
J1
J2
K1
K2
H3
K3
F3
J3
C7
C6
K9
G9
6881076C25-D
Table 3-9. VOCON U406 (ADSIC) (Continued)
Description
SSW/EPS*
SCLK/SPI SCK
SPO/MOSI
MA1
SDO
VRO REFMOD
MODIN
RXD SRO 2.4 MHz
RFS SC1
SCKR SCO
TXD STO
TFS SC2 48 kHz
SCKT SCK 1.2 MHz
DA4 BNK2
DA7B BNK1
DA7A BNK0
DIN*/DOUT*
DIN/DOUT
IDC ODC 2.4 MHz
SBI
XTL 33 MHz
EXTL
OSC*
DCLK
To/From
U404-30
U204-G5
J501-8
J801-9
J501-9
J801-8
U501-39
U501-40
J501-48
J501-49
U405-C5
U405-B5
U405-B9
U405-A2
U405-B2
U405-B6
U404-10
U404-11
U404-5
N/C
N/C
N/C
N/C
J501-1
J501-2
J501-7
J501-6
Y401
Y401
CR402
U405-K9
3-37
October 28, 2002
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