Kenwood LZ-702IR Service Manual page 6

LZ-702IR
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MICROCOMPUTER'S TERMINAL DESCRIPTION
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SYSTEM µ-COM : IC301 (X35- : VIDEO UNIT)
Pin No. Pin Name
1 VHOLD1
2 HLF1
3 SCL
4 SDA
5 NC
6 REMOCON
7 OSD HSYNC2
8 BYTE
9 CNVSS
10,11 NC
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCCI
17 OSCHLF
18 OSC2
19 ACC DET
20 POWER KEY
21 OSD SW
TE
L 13942296513
22 OUT2
23 NC
24 INV PWM
25 NC
26 SP VOL
27,28 NC
29 NDATA
30 TDATA
31 NC
32 OSD R
33 OSD G
34 OSD B
GAMMA DATA/
35
W TXD
36 W RXD
GAMMA CLK/
37
W CLK
38 BUSY
39 GAMMA CS
40 V SEL
41 INV ENABLE/EPM
42,43 NC
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44 N/P IN
45 V MUTE
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46 W CE
47 NC
48 SYS ON
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I/O Application
- Not used
- Not used
O I2C BUS interface clock
O I2C BUS interface data
- Not used
I Remote control
HSYNC for γ adjustment
I
- Not used
I Processor mode setting
- Not used
I Reset
I Resonator connection
- VSS
I Resonator connection
- 3.3V power supply
- For external filter
- Not used
I ACC detection
I PWR key interruption
O Source image/OSD switching
- Not used
- Not used
O PWM control for backlight
O Not used
O Volume control for speaker
- Not used
I Serial communication from navigation
O Serial communication to navigation
- Not used
O OSD red output
O OSD green output
O OSD blue output
Communication to timing controller IC (IC103)
O
For writing into flash µ-com
For writing into µ-com
I
Communication to timing controller IC (IC103)
I/O
For writing into µ-com
For writing into µ-com
O
O Communication to timing controller IC (IC103)
O Switches SW1 of timing controller IC (IC103)
O Inverter circuit enable
For writing into µ-com
-
NTSC/PAL condition detection of timing controller
I
x ao
IC (IC103)
y
O Video signal mute
i
- Not used
- Not used
- Not used
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Pull-down to VSS
Pull-down to VSS
L-fixed
Open
L : Reset
16.000MHz
16.000MHz
"H" : Power down
Screen comes back from sleep mode when power is OFF
"H" is output when displaying OSD
Q Q
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Controls by using DUTY of PWM
5V interface
5V interface
"H" : Navigation image. "L" : AV-IN image
"H" : Inverter operation
"H" : NTSC. "L" : PAL
u163
"H" : Video signal mute
.
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Processing / Operation / Description
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