
RMV800 SERVICE MANUAL
-
89
-
38
P56
NC
O
NC (left floating)
39
P55
HOLD
O
NC (left floating)
40
P54
NC
O
NC (left floating)
41
P53
NC
O
NC (left floating)
42
P52
RD
O
Read (for expansion)
43
P51
NC
O
NC (left floating)
44
P50
WR
O
Write (for expansion)
45
P47
HNC
O
Horn alert control On: H
46
P46
SHIFT
O
Clock frequency shift On: H
47
P45
W/N
O
W/N switch W: L
48
P44
CS0
O
Signal select (expansion chip)
49 A19
A19
O
NC
50~59
A18~A9
A18~A9
O
FLASHROM address bus
60 VCC
VCC
I
+5V
61
A8
A8
O
FLASHROM address bus
62 VSS
VSS
I
GND
63~70
A7~A0
A7~A0
O
FLASHROM address bus
71
P17
8RC
O
8R power supply control RX: H
72
P16
8TC
O
8T power supply control TX: H
73
P15
RX
O
TX/RX VCO switch RX: L
74
P14
EEPDAT
I/O
EEPROM data input/output
EEPCLK
O
EEPROM clock output
75 P13
DACLK
O
DA clock output
76
P12
PLLUL
I
PLL unlock detect Unlock: L
77
P11
PLLSTB
O
PLL strobe output Lock: L
78
P10
AFMUTE
O
AF Mute (RX) Mute: H
79~86
D7~ D0
D7~ D0
FLASHROM address bus
87
P10
PWR
I
[PWR] key input On: L
88
P10
IGN
I
Ignition sense input H: off L: on
PLLDAT
O
PLL data output
89 P10
DADAT
O
DA data output
90
P10
PLLCLK
O
PLL clock output
91 AN3
TEMP
I
Temperature
input
92 AN2
RSSQL
I
RSSI
input
93
AN1
ANLSQL
I
SQL input (analogue)
94 AVss
AVss
I
GND
95
AN0
TI
I
CTCSS/CDCSS signal input
96
VREF
VREF
I
Reference voltage input
97 AVCC
AVCC
I
GND
98 P97/Sin4 DTMFPD O
DTMF
chip
power supply control No power: H
99 P96/Sout4 DTMFCLK O
DTMF chip decode clock output
100
P95/Clk4
DTMFDAT
I
DTMF chip decode clock input