Motorola ASTRO Digital Spectra Service Manual page 85

Theory of Operation: ASTRO Spectra VOCON Board
U206
Pin #
G7
J9
E7
K7
G6
J7
G8
H9
E8
E2
C1
C3
A3
C4
B3
A4
B4
H10
H9
J8
K9
A2
C5
B6
B2
68P81076C25-C
Table 3-7. U206 (SLIC) (Continued)
Description
MICEN
B+ CNTL
VIP OUT1
CS3B EMC MAKEUP*
CS2B RAM SEL*
CS1B HEN*
DISP EN*/LATCH SEL*
RED LED
GRN LED
IRQ*
Table 3-8. VOCON U405 (DSP)
U405
Description
Pin #
PS*
DS*
RD*
WR*
X/Y*
BR*
BG*/BS*
MODA/IRQA*
MODB/IRQB*
XTAL
EXTAL
STO
SRO
SCK
SC2
To/From
J501-45
U409-2
Q206B
J501-22
J801-12
U211-2
U405-E8
J601-4
N/C
N/C
U204-E7
To/From
U404-6 U406-D8
U404-32 U406-F8
U404-7 U406-G10
R411
R432
U204-G4 U406-F10
U406-F9
R415
U406-G9 (DCLK)
U406-H1
U406-L3
U406-G3
U406-H2
3-35
July 1, 2002