Figure 7-127.Controller Rs232/Sb9600 Schematic - Motorola ASTRO Digital XTL 5000 Detailed Service Manual

7-184
Part Series
600-1
R0620
BUS-
100
R0621
BUS+
100
BUSY
BUSY
R0636
10K
LH_RESET
10K
R0639
Figure 7-127. Controller RS232/SB9600 Schematic
May 25, 2005
R0626
100K
VCC2.85
R0629 R0627
10K 100K
VCC5
C0616 2 8
100pF
3
4
R0625
10K
R0628
VCC5
100K
R0630
10K
100K
10K
10K
10K
BUS-*
10K
BUS+*
10K
Q0610
10K
10K
1
2
VCC5 VCC5
R0622
100
10K
10K
10K
10K
Q0611
10K
10K
10K
10K
BUSY*
LH_RESET*
R0623
100
U0602-3
10
MC74LCX125
9 8
Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board
VCC2.85
5
4
SB96_RS232*_EN
C0600
0.1uF
R0634
U0602-1 100K
MC74LCX125 MC74LCX125
U0604-1 U0602-2
MC74LCX125
MC33202
1 5 6
4
U0607-1
SB96_RS232*_EN_INV NC7ST08
Q0612
U0609-1
TC7S00FU
1
4
2
SB96_RS232*_EN_INV
U0610-1
TC7S00FU
U0602-4
13
MC74LCX125
4
12 11
Q0613
LHRST_OUT
LHRST_IN
SB96_RS232*_EN_INV
U0603-2
MC74LCX125
6
VCC5
R0638
10K
C0606
0.1uF
15
EN_OE
1 U0606
SELECT
SN74CBT3257
2
I0A
3 4
I1A YA BUS+_UARTB_TXD
5
I0B
6 7
I1B YB BUS-_UARTB_RXD
11
I0C
10 9
I1C YC BUSY_UARTB_RTS
14
I0D
13 12
I1D YD RESET_UARTB_CTS
Connector IF
R0635
U0603-1
100K
VCC2.85 C0610
R0631 0
0.1uF
VCC5
R0632
0
NP
U0608-1
NC7ST08
URXD2
UTXD2
C0611
0.1uF
URTS2
UCTS2
Patriot UART B
VCC5 VCC2.85
U0610-2
PWR_GND VCC
C0604 VCC C0603
0.1uF 0.1uF
GND
GND
NAND SUPPLY NAND SUPPLY
VCC2.85 VCC2.85
U0602-5 U0603-5
PWR_GND PWR_GND
VCC VCC
C0614 C0613
0.1uF 0.1uF
GND GND
BUFFER SUPPLY BUFFER SUPPLY
MAEPF-27919-O
U0607-2
PWR_GND
VCC
GND
BUFFER SUPPLY
U0608-2
PWR_GND
VCC
GND
BUFFER SUPPLY
U0609-2
PWR_GND
6881096C74-B