1 - 48
Pin No.
67
66
65
64
63
62
61
60
None
None
None
None
None
None
None
None
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
None
None
None
None
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
None
None
None
None
21
20
19
18
17
16
15
14
8
7
5
None
4
3
2
1
80
79
76
74
73
72
71
70
69
68
78
75
6
9
13
77
11
12
10
Port No.
0
1
2
3
4
5
6
7
8
9
10
Pin name
I/O
O
O
O
I
O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
O
O
O
O
I
I
I
I
O
O
O
O
I
I
O
O
O
I
O
I
I
I
I
I
I
I
I
I
I
I
O
O
O
O
I
I
O
I
I
I
I
I
O
O
I
O
I
I
I
O
I
I
I
I
I
I
I
I
I
I
-
-
-
-
-
-
-
-
-
Default value
0
0
1
0
1
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Place of use
P0_0
P0_1
P0_2
P0_3
P0_4
P0_5
P0_6
P0_7
P2_0
P2_1
P2_2
P2_3
P2_4
P2_5
P2_6
P2_7
P3_0
P3_1
P3_2
P3_3
P3_4
P3_5
P3_6
P3_7
P4_0
P4_1
P4_2
P4_3
P5_0
P5_1
P5_2
P5_3
P5_4
P5_5
P5_6
P5_7/CLKOUT
P6_0/CTS0*/RTS0*
P6_1/CLK0
P6_2/RXD0
P6_3/TXD0
P6_4/CTS1*/RTS1*/CTS0*/CLKS1
P6_5/CLK1
P6_6/RXD1
P6_7/TXD1
P7_0/TXD2/SDA/TA0OUT
P7_1/RXD2/SCL/TA0IN/TB5N
P7_6/TA3OUT
P7_7/TA3IN
P8_0/TA4OUT
P8_1/TA4IN
P8_2/INT0*
P8_3/INT1*
P8_4/INT2*
P8_5/NMI*
P8_6/XCOUT
P8_7/XCIN
P9_0/TB0IN/CLK3
P9_2/TB2IN/SOUT3
P9_3/DA0/TB3IN
P9_4/DA1/TB4IN
P9_5/ANEX0/CLK4
P9_6/ANEX1/SOUT4
P9_7/ADTRG*/SIN4
P10_0/AN0
P10_1/AN1
P10_2/AN2
P10_3/AN3
P10_4/AN4/K10*
P10_5/AN5/K11*
P10_6/AN6/K12*
P10_7/AN7/K13*
AVCC
AVSS
CNVSS(BYTE)
RESET
VCC
VREF
VSS
XIN
XOUT
Pin assignment
U/D
INC
/PD
SCDT
/PDO
EEP_SDA
EEP_SCL
P_ON
PRO_DLY
P_PANEL
P_INVT
P_SUSP1
P_SUSP2
P_SUSP3
P_SAVE
P_TMDS
RSTN
MST
MSD
MSQ
RGSN
FS0
FS1
FS2
MODEL1
MODEL2
MODEL3
MODEL4
CE*
CABLE
/WP
LED_P_U
LED_P_G
EPM*
SEL 1
PIVOT_SENSE
TMDS_CTL3
TMDS_CTL2
TMDS_CTL1
A2_ANA
BUSY
SCLK
RXD
TXD
DDC_SDA
DDC_SCL
A2_DIG
C/S_V2
SEL_2
C/S_V1
S/G_V2
QVD_M
S/G_V1
MNI*
SEL HS2_GS2
SEL HS1_GS1
C/S_H2
S/G_H2
C/S_H1
S/G_H1
/CS
RESET
SW_DET
+
NEXT
RIGHT
-
EXIT
LEFT
Avss
CVSS
RESET
Vcc
VREF
Vss
XIN
Details
DVI-I connector DDC switching control signal
DVI-I connector DDC switching control signal
TMDS receiver power save mode
TMDS receiver DE detection
TMDS receiver output enable
EEPROM I/F bus data input
EEPROM I/F bus clock output
A5V circuit power control
For inverter sequence control
FET-SW output control for panel power
Inverter lighting control
A2.5V circuit power control
D2.5V circuit power control
Power control for PLL circuit
PWB-POWER PRC mode/resonance mode switching control
TM3_3V circuit power control
ASIC forcible reset signal
Communication I/F between microcomputer and ASIC
Communication I/F between microcomputer and ASIC
Communication I/F between microcomputer and ASIC
Communication I/F between microcomputer and ASIC
Panel clock setting signal 0
Panel clock setting signal 1
Panel clock setting signal 2
Panel identification signal input 0
Panel identification signal input 1
Panel identification signal input 2
Panel identification signal input 3
Chip enable signal for onboard writing
CABLE detection (unused)
EEPROM write protect for DDC communication
LED control signal (orange)
LED control signal (green)
Mode switching signal for onboard writing
DVI-A video input buffer output enable signal
Inclination sensor signal detection (unused)
TMDS receiver CTL3 signal
TMDS receiver CTL2 signal
TMDS receiver CTL1 signal
DVI-I (for analog Ch) EEPROM A2 address detection
BUSY signal for onboard writing
Clock data for onboard writing
Reception data for onboard writing
Send data for onboard writing
Data signal for DDC communication
Clock signal for DDC communication
DVI-I (for digital Ch) EEPROM A2 address detection
V measurement at C/S for D-SUB connectors
D-Sub video input buffer output enable signal
V measurement at C/S for DVI-I connector (analog Ch)
V measurement at S/G for D-Sub connector
Equivalent to vertical synchronizing signal input (from ASIC)
V measurement at S/G for DVI-I connector (analog Ch)
For onboard writing
Input sync switching switch
Input sync switching switch
H measurement at C/S for D-Sub connector
H measurement at S/G for D-Sub connector
H measurement at C/S for DVI-I connector (analog Ch)
H measurement at S/G for DVI-I connector (analog Ch)
DVI-I connector DDC switching control signal
Internal thermistor circuit A/D input
OSD menu selection (reset the setting value to the default)
Front power switch monitoring
OSD menu selection (+)
OSD menu selection (move to next tag)
OSD menu selection (R)
OSD menu selection (-)
Close OSD display
OSD menu selection (L)
D/A power supply
For onboard writing
Reset signal input
Microcomputer power supply
Reference power for D/A converter
Microcomputer GND
Clock input
0: Dec (digital), 1: Inc (analog)
Tap slide at each falling edge
0: At TMDS power down, 1: When normal
0: No sync, Sync
0: At TMDS output open, 1: When normal
1: Power ON, 0: Power OFF
1: Output ON, 0: Output OFF
1: On, 0: Off
1: Power ON, 0: Power OFF
1: Power ON, 0: Power OFF
1: Power ON, 0: Power OFF
1: When normal, 0: During power save
1: Power ON, 0: Power OFF
Clock
Data written to ASIC
Data read from ASIC
Enable
1: Write enabled, 0: Write protected
0: Output disable, 1: Output enable
0: When normal
0: When normal
0: When normal
1: A2 address 0, 0: A2 address 1
1: A2 address 0, 0: A2 address 1
0: Output disable, 1: Output enable
Equivalent to frame signal
Vcc
0: H or C/S side, 1: S/G side
0: H or C/S side, 1: S/G side
L: Normal, : Tap position store
0: Low temp., 255: High temp.
DG
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
1: Normal, 0: When SW is pressed
Vcc
Vcc
L: Reset (normally H)
3.5V
Vcc
DG
10MHz
N.C.
X9116WM
X9116WM
Sii143
Sii143
Sii143
EEPROM
EEPROM
PQ1U501M2ZP
Inverter board
FET-SW for panel power
Inverter board
ASIC(analog circuit)
ASIC(digital logic circuit)
ASIC(PLL circuit)
Power board
TMDS
ASIC
ASIC
ASIC
ASIC
ASIC
ASIC
ASIC
ASIC
Serial writer
EEPROM for DDC communication
SW board
SW board
Serial writer
Inclination sensor
Sii143
Sii143
Sii143
EEPROM
Serial writer
Serial writer
Serial writer
Serial writer
PC
PC
EEPROM
ASIC
Serial writer
74F157MTCX
(multiplexer IC)
X9116WM
Thermistor circuit
SW board
SW board
SW board
SW board
SW board
SW board
SW board
Serial writer
Appendix Table 2. Microcomputer port assignment table
Set with hardware
(Refer to separate
table 1 for details)
Set with hardware
(Refer to separate
table 2 for details)
Summary of Contents for NEC MultiSync LCD1550X LCD1550X LCD1550X
Page 88: ...SCHEMATIC DIAGRAM POWER LCD1550X Normal Power Save 1ch Pin 4 2ch Pin 1 3ch Pin 2 4ch Pin 5...
Page 89: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X...
Page 90: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X...
Page 91: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X...
Page 92: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X...
Page 96: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X...
Page 97: ...SCHEMATIC DIAGRAM INVERTER LCD1550X 1ch Q701 B 2ch Q702 B...
Page 98: ...SCHEMATIC DIAGRAM PWB SW LCD1550X...
Page 100: ...SCHEMATIC DIAGRAM POWER LCD1550X...
Page 101: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X...
Page 102: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X...
Page 103: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X...
Page 104: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X...
Page 105: ...SCHEMATIC DIAGRAM PWB MAIN MC LCD1550X...
Page 106: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X...
Page 107: ...SCHEMATIC DIAGRAM INVERTER LCD1550X...
Page 108: ...SCHEMATIC DIAGRAM PWB SW LCD1550X...
Page 127: ...16 Document No VSPF A028 Bave Average brightness of 1 to 9 10 50 90 90 10 50 5 1 2 3 6 9 8 7 4...
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