Port Allocations - Icom IC-F3061S Service Manual

5-5 PORT ALLOCATIONS

5-5-1 CPU (MAIN UNIT; IC18)
Pin Port
No. Name
1 DSDA Outputs serial data to the D/A converter (IC20, pin 6).
2 DAST Outputs strobe signal to the D/A converter (IC4, pin 6).
Input port for [Side3] key (S4).
3 SIDE3
"Low"=When the key is pushed.
4−7 CBI0−3 Input ports for [ROTARY SELECTOR] (VR UNIT; S701).
Outputs serial data to the PLL IC (IC1, pin 15), D/A
10 SSO
converter (IC4, pin 8).
Outputs serial crock signal to the PLL IC (IC1, pin
11 SCK
14), D/A converter (IC4, pin 8).
Outputs PLL strobe signal to the PLL IC (RF UNIT;
13 PLST
IC1, pin 16).
Outputs mode (Digital/Analog) switching signal to
15 DASW
the D/A converter (IC14, pins 10, 11).
Outputs transmit mute signal to the transmit mute
17 TMUT
switch (RF UNIT; Q606).
Outputs Narrow/Wide mode switching signal to the
18 NWC2
bandwidth switches (Q26, D32, D33).
Outputs Narrow/Wide mode switching signal to the
19 NWC1
bandwidth switches (Q27, Q41, Q42, D34, D35).
Outputs serial data to the DTMF decode IC (IC10,
20 DDSD
pin 9).
Outputs serial clock signal to the DTMF decode IC
21 DDAC
(IC10, pin 11).
Outputs T5V line control signal to the T5V regulator
26 T5C (Q15).
"Low"= While transmitting.
Output R5V line control signal to the R5V regulator
27 R5C (Q16).
"Low"= While receiving.
Output S5V line control signal to the S5V regulator
28 S5C (Q14).
"Low"=While power save mode.
Input port for [PTT] switch (S3).
29 PTTSW
"Low"=When the switch is pushed.
Input port for [Side2] key (S5).
30 SIDE2
"Low"=When the key is pushed.
32 RMUT Outputs mute signal to the AF mute switch (D42).
Input port for the noise level from the FM IF IC (IC3,
37 NOIS
pin 13).
Input port for power switch (VR UNIT; R702) from
38 POSW
power controller (D36).
Outputs strobe signal to the DTMF decode IC (MAIN
39 DDST
UNIT; IC10, pin 14).
Outputs serial clock signal to the base band IC
40 MTCK
(MAIN UNIT; IC5, pin 9).
Outputs VCC line control signal to the power switch
41 PWON (Q30, Q31).
"Low"=While the power is ON.
Outputs single tone encode signal to the LPF (IC17,
43 SENC
pin 10).
44 BEEP Outputs beep sound to the AF circuits (IC4, pin 13).
45 SDEC Input port for decoded 2/5 tone and DTMF signals.
46 CDEC Input port for decoded CTCSS/DTCS signal.
Input port for power amplifier current detect signal
47 ISENS
from the current detector (RF UNIT; Q604, Q605).
48 BATV Input port for remaining battery power.
49 LVIN Input port for VCO lock voltage.
Input port for RSSI signal from the FM IF IC (IC3,
50 RSSI
pin 12).
55 EMER Input port for [Emer] switch (VR UNIT; S702).
Description
Pin Port
No. Name
Outputs CPU clock frequency shift signal to the CPU
70 CSFT
clock oscillator (X2, D38).
Outputs CTCSS/DTCS select signal to the CTCSS/
71 DUSE
DTCS switch (Q34).
Input port for PLL unlock detect signal from the PLL
73 UNLK
IC (IC1, pin 11).
Outputs RX indicator (VR UNIT; DS701) control
74 RLED
signal to the LED driver (VR UNIT; Q701).
Outputs TX indicator (VR UNIT; DS701) control
75 TLED
signal to the LED driver (VR UNIT; Q701).
Outputs serial data to the expand IC (FRONT UNIT;
78 FSDA
IC505, pin 3).
Outputs serial clock signal to the expand IC (FRONT
79 FSCL
UNIT; IC505, pin 3).
Input port for external connection detect signal from
81 CIRQ
J1 and J2.
Input port for [Side1] key (S6).
88 SIDE1
"Low"=When the key is pushed.
CENC0−
89−
Output CTCSS/DTCS signals to the LPF (IC17, pin 3).
91
2
Outputs emphasis characteristic change signal to
92 EMPH
the D/A converter (IC13, pins 9, 10).
93 MTDT Outputs serial data to the base band IC (IC5, pin 10).
Outputs serial clock signal to the base band IC
96 MSCK
(MAIN UNIT; IC5, pin 13).
Outputs modulation mode switching signal to the
97 PMFM
PM/FM switch (IC13, pin 11) .
98 ESDA Outputs serial data to the EEPROM (IC19, pin 5).
Outputs serial clock signal to the EEPROM (IC19,
99 ESCL
pin 6).
100 RESL Input port for reset signal from the reset IC (IC8, pin 1).
5-5-2 D/A CONVERTER (MAIN UNIT; IC20)
Pin Port
No. Name
Outputs BPF tuning voltage to the tunable BPF (
1 T1
D24, L31, L32, C120−C122, C125−C127
• While receiving
Outputs BPF tuning voltage to the tunable BPF
D28, D29, L33, L34, C140−C144, C147
(
2 T2
• While transmitting
Outputs TX power setting voltage to the APC
amplifi er (RF UNIT; IC601).
Outputs oscillation frequency adjust voltage to the
3 TXLVA
TX VCO (
Outputs oscillation frequency adjust voltage to the
4 RXLVA
RX VCO1/2 (
5-5-3 EXPAND IC (FRONT UNIT; IC505)
Pin Port
No. Name
Outputs AF power amplifi er (Q508, Q509) control
4 AFON signal to the AF power amplifi er controller (Q501,
Q502, D508).
Outputs backlight control signal to the backlight
5 LIGH
driver (Q507−Q509).
Outputs internal/external speaker select signal to
6 SPCON
the SP/ESP switch (Q512, Q513).
Outputs internal/external microphone select signal
7 MCON
to the microphone controller (Q505, D504).
5 - 5
Description
Description
Q3, D10−D12)
.
Q1, D1−D4/Q2, D5−D8)
.
Description
D23,
).
).