Microcomputer’s Terminal Description; System Microcontroller Ic - Kenwood GX-201KEF2 Service Manual

QQ
MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
SYSTEM MICROCONTROLLER IC : 703037AGF-A15 (X14 : IC81)
Pin No. Pin Name
1 SC_DATAIN
2 PLL_SDA
3 R_DATA (NC)
4 PLL_SCL
5 R_QUAL (NC)
6 CDX_SI
7 CDX_SO
8 CDX_CLK
9 EVDD
10 EVSS
11 BEEP
12 IFC
13 AM+B
14 FM+B
15 ILL_DET-
TE
L 13942296513
16 ILL_DET+
17 NC
18 MUSIC
19 DOLBY
20 EQ_MUTE
21 IC/VPP
22 CDX_MTS
23 MTL
24 F/R
25 MSC
26 BUS_DI
27 BUS_DO
28 IC2_SDA
29 IC2_SCL
30 NC
31 A_SEL
32 MUTE
www
33 AFS (NC)
34 RESET
.
35 XT1
I/O Application
O Slave data output (Panel communication)
I/O F/E (+EEPROM) data input/output
I (O) RDS data input
O F/E (+EEPROM) clock output
I (O) RDS quality
I 6CD data input
O 6CD data output
I 6CD clock input
- 5V electrical potential
- GND electrical potential
O BEEP output
I F/E IFC OUT input
O AM power supply output
O FM power supply output
I ILL- detection (Vehicle illumination control signal)
I ILL+ detection (Vehicle small signal)
O Not used
I CS between music detection
O CS dolby switching
O CS EQ mute
- Write voltage
O 6CD communication request output
I CS metal SW
O CS F/R switching
O CS gain switching at music select
I IE-BUS data input
O IE-BUS data output
I/O IC2 data input/output
O IC2 clock output
O Not used
O Audio selection
O Audio mute
O Switching constant at noise detection
x ao u163
y
I System reset input
i
I Sub-system clock oscillation terminal
GX-201KEF2/LEF2/REF2/SEF2
2 9
8
Processing Operation Description
(UART) 19200bps
(I2C) 100kHz or less
(M, General type : Open, not used)
(I2C) 100kHz or less
(M, General type : Open, not used)
(SIO) 250kHz
(SIO) 250kHz
(SIO) 250kHz
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)
Q Q
3 6 7 1 3 1 5
ILL+ ON : L
Open
Between music : H, Music detection : L
NR ON : H, NR OFF : L
PLAY : L, FF/REW DPSS : H
Normal : H, Metal, CrO2 : L
FWD : L, REV : H, Initial : L
G1 (-40dBm) : L, G2 (-60dBm) : H
(I2C) 100kHz or less
(I2C) 100kHz or less
Open
CD : H, CS : L
Mute : H, Normal : L
FM, AM seek : L (J, M, General type : Open, not used),
RDS operation : H, Other than RDS operation : L
co
Reset : L, Reset voltage : 4.2V, Reset at rise of L→H
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
7