Kenwood KVT-627DVDY Service Manual page 18

KVT-627DVD/627DVDY/717DVD
KVT-737DVD/747DVD/767DVD
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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Audio Microcomputer: 703030YGCJ13A (X34: IC303)
Pin No. Pin Name
1 TV_CON
2 TUN_SCL
3 NAVI1_RX
4 NAVI1_TX
5 VISUAL_SW5_1
6 EVDD
7 EVSS
8 RGB_SW1
9 RGB_SW2
10 VSYNC_DET
11 VISUAL_SW4
12 SYS_MDATA
13 SYS_SDATA
14 SYS_MCLK
TE
L 13942296513
15 VSYNC_SW1
16 VISUAL_SW3_2
17 PWIC_BEEP
18 IC/VPP
19 VISUAL_SW3_1
20 VISUAL_SW2_2
21 VISUAL_SW2_1
22 VISUAL_SW1_2
23 VISUAL_SW1_1
24 VISUAL_SW5_2
25 RDS_DATA
26 RDS_QUAL
27 P_ON_AM
28 RDS_AFS
29 NC
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30 MUTE_PRE
31 RESET
.
32 XT1
33 XT2
18
Module
I/O
(physical)
TV O Startup requests to TV unit
FST I/O F/E I2C clock output terminal
NAVI I Data from navigation 1
NAVI O Data to navigation 1
Visual O TV/AVIN2 video switching
µCOM
µCOM
Visual O TV/NAVI1/NAVI2 RGB video switching
Visual O TV/NAVI1/NAVI2 RGB video switching
Vertical synchronization signal detection
Visual I
(for automatic detection of AVIN2)
Visual O TV/Rear view camera video switching
Data from system control µ-com
to X14 I
Data to system control µ-com
to X14 O
Clock from system control µ-com
to X14 I
Switching for monitoring of NTSC/PAL
Visual O identification COMP signal and AUTO
detection COMP signal
Visual O NAVI1/NAVI2/AVIN1 video switching
POWER-IC O Beep output
µCOM
Visual O NAVI1/NAVI2/AVIN1 video switching
Visual O SW5 (or TV)/AVIN2/DVD video switching
Visual O SW5 (or TV)/AVIN2/DVD video switching
AVIN2/SW5 (or TV)/
Visual O
SW3 (or NAVI1) video switching
AVIN2/SW5 (or TV)/
Visual O
SW3 (or NAVI1) video switching
Visual O TV/AVIN2 video switching
RDS I RDS decoder DATA input
RDS I RDS decoder QUAL input
FST O AM power supply ON/OFF control
FST I/O Noises detection constant switching
O
MUTE O Muting for PREOUT
x ao
y
µCOM
i
µCOM
µCOM
8
Truth Value
Application
Table
!3
!0
!0
!2
Q Q
3 6 7 1 3
!4
!1
!1
o
o
i
i
!3
u163
.
2 9 9 4 2 8
Processing Operation Description
H: TV unit ON, L: TV unit OFF
Refer to truth value table
Refer to truth value table
Refer to truth value table
Refer to truth value table
1 5 0 5 8 2 9 9 4
Refer to truth value table
Refer to truth value table
Refer to truth value table
H: ON (When AM is selected), L: Normal
m
L: MUTE ON, H: Normal
co
9 9
2 8 9 9