Kenwood DNX4280BT Service Manual page 9

MICROCOMPUTER'S TERMINAL DESCRIPTION
● SYSTEM MICROCONTROLLER (X15 : IC205)
Pin No. Pin Name
1 VREF
2 AVCC
3 TV_SC_DATA
4 TV_MC_DATA
5 TV_BP_CLK
6 SI (DSI)
7 LV5680P
8 R_DATA
9 WREMO
10 R_QUAL
11 TV_MC_REQ
12 TV_SC_CON
13 BYTE
14 CNVSS
15 XCIN
16 XCOUT
17 RESET
18 XOUT
19 VSS
20 XIN
21 VCC1
22 NMI
23 TV_SC_REQ
24 R_CLK
25 PANEL_DET
26 R_AFS_H
EVOL_SCL/ASEL_SCL/
27
E2PROM_SCL/DSP_SCL
EVOL_SCL/ASEL_SCL/
27
E2PROM_SCL/DSP_SCL
EVOL_SCL/ASEL_SCL/
27
E2PROM_SCL/DSP_SCL
EVOL_SCL/ASEL_SCL/
27
E2PROM_SCL/DSP_SCL
28 TUN_IFC
EVOL_SDA/ASEL_SDA/
29
E2PROM_SDA/DSP_SDA
I/O Application
I Data input from TV μ-com
O Data output to TV μ-com
O Communication clock with TV μ-com
O SI (DSI) control
O LV5680P control
I "DATA" input from RDS decoder
I Remote controller input
I "QUAL" input from RDS decoder
O Request to TV μ-com
O Request to start-up TV μ-com
I External data bus width switching input
I Processor mode switching terminal
Sub-clock oscillation circuit input
Sub-clock oscillation circuit output
Reset input
Main clock oscillation circuit output
Main clock oscillation circuit input
I Request from TV μ-com
I Clock input from RDS decoder
I PANEL detach / attach detection
Time constant switching when F/E noise
I/O
is detected
O Communication clock with E-VOL
O Communication clock with AV selector
Communication clock with EEP
O
(External memory)
O Communication clock with simplifi ed DSP
I F/E IFC input
I/O Communication data with E-VOL
DNX4280BT/5180/5280BT/5380/5380M
/5380BT/5580BT/6040EX/6180/6480BT/6980
Truth value
Processing / Operation / Description
table
H: Off (at power-off), L: On (at power-on (in nor-
mal operation) Duty50%),
Intermittent operation (2S interval, L width
100ms): Blinking (at ACC off)
In single chip mode: Connected to VSS
In microprocessor mode: Connected to VCC1
In single chip mode: Connected to VSS
32.768kHz (crystal oscillator)
32.768kHz (crystal oscillator)
L: Reset, H: Reset clear
12MHz (crystal oscillator)
12MHz (crystal oscillator)
H: Detach, L: Attach
H: Station found, L: Station not found
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