Kenwood DDX8017 Service Manual page 16

DDX8017/8027/8027Y
DDX8037/8047/8067
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
36 SCL/CHROMA_SCL
37 BE_RST
38 POWER_DET
39 BL_DET
40 B_PON
41,42 NC
43 FSEL1
44 FSEL2
45 FSEL_SW
46 PON
47 MCNT
48 RGB_SW
49 OSD_CS
50 OSD_DATA
51 OSD_CLK
52 OSD_RST
53 WRT_E2P
54 POWER_PWM
55 JIG_EJ
56 PWM
57 STATUS0
58 STATUS1
59 PANEL_DET
60 STATUS2
61 SH_MDATA
62 SH_SDATA
63,64 NC
65 SYS_SREQ
66 SYS_MREQ
67 SYS_ON
68 SYS_SDATA
69 SYS_MDATA
70 SYS_CLK
71 MINI_CS/MINI_CS
71 MINI_CS/FLASH_SDATA
72 MINI_MDATA/MINI_MDATA
72 MINI_MDATA/SUBLED_SW
72 MINI_MDATA/FLASH_MDATA
73 MINI_CLK/MINI_CLK
73 MINI_CLK/FLASH_CLK
16
Module (physical) I/O
Chroma γ Access with chroma γ IC
I/O
B/E O B/E circuit reset
Power supply I 8.5V over current detection
INVERTER I Backlight abnormality detection
Power supply O SW14 (BU SW)ON/OFF control
O
Power supply O DC-DC IC oscillation frequency switching
Power supply O DC-DC IC oscillation frequency switching
Power supply O Control at DC-DC IC FSEL switching
Power supply O Power supply ON/OFF control
Power supply O Motor driver voltage switching (MECHA7V) (1DIN)
VIDEO O RGB signal switching
OSD O OSD-IC chip select (OSD)
OSD O Data output to OSD-IC (OSD)
OSD O Clock output to OSD-IC (OSD)
OSD O Resetting OSD-IC (OSD)
µCOM
I Used for E2P writing
Power supply O DC/DC-IC oscillation frequency control
EXTRA I 2DIN
INVERTER O Liquid crystal brightness control
JIG O For monitor mechanism endurance Jig
JIG O For monitor mechanism endurance Jig
PANEL I Front panel attach/detach detection
JIG O For monitor mechanism endurance Jig
Data output to SH-3 µ-com (GRAPHIC)
SH-3 O
Data input from SH-3 µ-com (GRAPHIC)
SH-3 I
O
Request from BOX µ-com
BOX I
Request to BOX µ-com
BOX O
BOX µ-com ON/OFF control
BOX O
Data input from BOX µ-com
BOX I
Data output to BOX µ-com
BOX O
Communication clock with BOX µ-com
BOX O
PANEL O Communication with mini liquid crystal
µCOM
I For flash writing
PANEL O Communication with mini liquid crystal
PANEL O Model without mini liquid crystal LED ON/OFF
µCOM
O For flash writing
PANEL O Communication with mini liquid crystal
µCOM
I For flash writing
Application
L: RESET
H: Abnormality detection
H: Abnormality detection
H: ON
Normal: H, At FSEL switching: L
H: ON
H: 7V, L: 5V
L: DVD, H: OTHER
PWM output.
At FSEL switching stopped. (Output L)
H: Detached, L: Attached 2DIN L-fixed
OSD is output
H: ON, L: OFF
250kHz
HI: ON
Processing Operation Description