Microcomputer's Terminal Description; System Microcontroller Ic: 703037Aygfm02 (X14: Ic81) - Kenwood GX-201KHF2 Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM MICROCONTROLLER IC : 703037AYGFM02 (X14 : IC81)
Pin No. Pin Name I/O
1 SC_DATAIN O
2 PLL_SDA I/O
3 MECHA_SDA I/O
4 PLL_SCL O
5 MECHA_SCL O
6 R_DATA (NC) I (O)
7 R_QUAL (NC) I (O)
8 NC O
9 EVDD -
10 EVSS -
11 BEEP O
12 IFC I
13 AM+B O
14 FM+B O
15 ILL_DET- I
16 ILL_DET+ I
17~20 NC O
21 IC/VPP -
22~25 NC O
26 BUS_DI I
27 BUS_DO O
28 IC2_SDA I/O
29 IC2_SCL O
30,31 NC O
32 MUTE O
33 AFS (NC) O
34 RESET I
35 XT1 I
36 XT2 -
37 REGC -
38 X2 -
39 X1 I
40 VSS -
41 VDD -
42 NC O
43 HARD_RESET O
Application
Slave data output (Panel communication)
F/E (+EEPROM) data input/output
CD mechanism data input/output
F/E (+EEPROM) clock output
CD mechanism clock output
RDS data input
RDS quality
Not used
5V electrical potential
GND electrical potential
BEEP output
F/E IFC OUT input
AM power supply output
FM power supply output
ILL- detection (Vehicle illumination control signal)
ILL+ detection (Vehicle small signal)
Not used
Write voltage
Not used
IE-BUS data input
IE-BUS data output
IC2 data input/output
IC2 clock output
Not used
Audio mute
Switching constant at noise detection
System rest input
Sub-system clock oscillation terminal
Sub-system clock oscillation terminal
Main system clock oscillation terminal
Main system clock oscillation terminal
GND electric potential
5V electric potential
Not used
Hard reset output
GX-201KHF2/LHF2/RHF2/SHF2
Processing Operation Description
(UART) 19200bps
(I2C) 100kHz or less
(I2C) 100kHz or less
(I2C) 100kHz or less
(I2C) 100kHz or less
(J, M, General type : Open, not used)
(J, M, General type : Open, not used)
Open
Buzzer : H (Pulse) 2kHz
Station found : L, Other : H
AM : H, Other : L
RDS operation : H (FM : H),
Other than RDS operation : L (Other : L)
ILL- ON (GND) : H (Pulse input)
ILL+ ON : L
Open
Open
(I2C) 100kHz or less
(I2C) 100kHz or less
Open
Mute : H, Normal : L
FM, AM seek : L (J, M, General type : Open, not used ),
RDS operation : H, Other than RDS operation : L
Reset : L, Reset voltage : 4.2V, Reset at rise of L→H
12.58MHz
12.58MHz
Open
Reset : H
5