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The DDC switching circuit can operate when either the A5V (monitor synchronizing signal/DDC
system power) or DVI connector pin 14 +5VDC (external power from PC) is turned ON
(A5V_OR_DVI power). The tap position information (equivalent to DVI SELECT results) stored
in the X9116WM-2.7's non-volatile memory is automatically loaded when the power is turned
ON. Thus, even if the monitor power for the asset management function is turned OFF (micro-
computer is also OFF), the EDID data to which DVI SELECT results set previously have been
reflected can be sent to the PC.
The AC timing for the 3-Wire Serial Interface is shown below.
The MODE SELECTION for the 3-Wire Serial Interface is shown below.
/CS
Lo
Lo
Hi
/INC
Hi
X
Lo
U/D
Hi
Lo
X
X
X
Mode
Wiper Up
Wiper Down
Store Wiper Position
Standby Current
No Store, Return to Standby
Symbol
Parameter
Min.
100
100
2.9
1
1
1
10
4
0.2
Limits
Typ.
(6)
1
5
Max.
5
500
5
50
10
Units
ns
ns
µ
s
µ
s
µ
s
µ
s
ms
µ
s
µ
s
µ
s
µ
s
mV/ms
ms
t
CI
t
ID
t
DI
t
IL
t
IH
t
IC
t
CPH
t
IW
t
CYC
t
R
, t
F (7)
t
PU (7)
t
R
V
CC (7)
t
WR
CS to INC Setup
INC HIGH to U/D Change
U/D to INC Setup
INC LOW Period
INC HIGH Period
INC Inactive to CS Inactive
CS Deselect Time (STORE)
INC to Vw Change
INC Cycle Time
INC Input Rise and Fall Time
Power up to Wiper Stable
V
CC
Power-up Rate
Store Cycle
A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified)
Notes: (6) Typical values are for T
A
= 25
°
C and nominal supply voltage.
(7) This parameter is periodically sampled and not 100% tested.
(8) MI in the A.C. timing diagram refers to the minimum incremental change in the Vw output due to a change
in the wiper position.
A.C. TIMING
t
CYC
t
IL
t
ID
t
DI
t
CI
t
IW
t
IH
t
F
t
R
90%
90%
10%
t
IC
t
CPH
(STORE)
MI
(8)
CS
Vw
INC
U/D
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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