Motorola ASTRO Digital Spectra User Manual

7-78 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section
September 5, 2008 6881076C25-E
HLN6837E ASTRO Spectra Plus VTrans Schematic
KRSIC_DB(7:0)
KRSIC_DB(7:0)
10K
R352
VCC2.85
MC74HC32A
U602-3
9
10
8
KRSIC_AB(4:0)
KRSIC_WR
RESET_OUT
QSCKB
MOSIB
KRSIC_SEL
KRSIC_RD
KRSIC_CS
BRAVO TO KRSIC
12
13
11
U602-4
MC74HC32A
6
1
2
3
0
4
5
7
KRSIC_AB(4:0)
Note:
If R353, R355, and R357 are placed, do not place R354, R356, and R358
BRAVO FROM KRSIC
ABA_RXD
ABA_FSYNC
ABA_CLK
8Khz_DSP_int
MISOB
Q6
Q7
VCC
EN_OE
GND
Q0
Q1
Q2
Q3
Q4
Q5
D1
D2
D3
D4
D5
D6
D7
EN_LE
U421
D0
0.1uF
C515
VCC3.0
DNP
13
12
20
11
1
10
19
18
17
16
15
14
3
4
5
6
7
8
9
MC74LCX573
2
0
R355
0
R356
4
3
2
1
0
DNP
0
R353
R354
0
VCC3.0
Q5
Q6
Q7
20
VCC
EN_LE
EN_OE
GND
Q0
Q1
Q2
Q3
Q4
D0
D1
D2
D3
D4
D5
D6
D7
U420
C511
0.1uF
14
13
12
11
1
10
19
18
17
16
15
MC74LCX573
2
3
4
5
6
7
8
9
0
4
3
2
1
KRSIC_AB_3(4:0)
KRSIC FROM BRAVO
O
O
O
O
O
O
O
O
RESET_OUT_3
KRSIC_SEL_3
MOSIB_3
QSCKB_3
KRSIC_CS_3
KRSIC_RD_3
KRSIC_WR_3
KRSIC_AB_3(4:0)
KRSIC TO BRAVO
I
I
I
I
I
ABA_RXD_3
ABA_FSYNC_3
ABA_CLK_3
8Khz_DSP_3
MISOB_3
DNP
Q3
Q4
Q5
Q6
Q7
20
VCC
D6
D7
EN_LE
EN_OE
GND
Q0
Q1
Q2
D0
D1
D2
D3
D4
D5
MC74LCX573
U422
R357
0
R358
0
0.1uF
C516
VCC2.85
16
15
14
13
12
8
9
11
1
10
19
18
17
2
3
4
5
6
7
14
Q5
13
Q6
12
Q7
VCC
5
EN_LE
EN_OE
10
GND
19
Q0
18
Q1
17
Q2
Q3
16
15
Q4
D0
D1
D2
D3
D4
D5
D6
D7
U417
0
1
7
6
2
3
4
20
11
1
2
3
4
5
6
7
8
9
MC74LCX573
C509
0.1uF
VCC2.85
1
2
3
4
0
6
5
7
VCC3.0
Q5
14
Q6
13
Q7
12
VCC
20
EN_LE
11
EN_OE
1
GND
10
Q0
19
Q1
18
Q2
17
Q3
16
Q4
15
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
U419
MC74LCX573 0.1uF
C510
5
6
7
4
2
3
0
1
TOUT_14_10
RESET_OUT
SELECT
VCC
A
B0
B1
GND
I
5
VCC2.85
U423
NLASB3157
4
3
1
2
6
LOGIC_BOOT
LH_RESETI
0.1uF
C514
KRSIC DATA
BUS
KRSIC_DB_3(7:0)
KRSIC_DB_3(7:0)

Motorola ASTRO Digital Spectra Specifications

General

Brand	Motorola
Model	ASTRO Digital Spectra
Category	Radio
Language	English