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WT8045
WT8045
Synchronous Signal Discriminator and
Power Saving Detector for Green Monitor
May 4, 1995
DESCRIPTION
The WT8045 is a silicon monolithic circuit designed for synchronous signal processing and power
saving detection of multi-sync display monitors, which can cope with many kinds of PC's and
workstations.
It can be applied to display monitors supporting standard IBM VGA, VESA super VGA and IBM
8514/A video modes. It can also be used in other high-end display monitors supporting non-standard
video modes with user-defined horizontal/vertical frequency ranges.
The WT8045 incorporates many functional circuits, including horizontal/vertical frequency
discrimination, display mode selection, and synchronous pulse polarity and power saving detection,
into this single chip IC.
WT8045 is more convenient for you to shrink the PC board size and to reduce the material and labor
cost with fewer components.
FEATURES
•
Accepting two separated H&V synchronous signals with positive/ negative polarity.
•
Support VESA VGA (640X480, 640X400, 640X350), VESA SVGA (800X600), European
SVGA (800X600), VESA new SVGA (800X600), XGA (1024X768) and 1280x1024.
•
Capable of processing horizontal frequency between 25KHZ to 80KHZ.
•
Standard IBM video mode control outputs (1024X768, 640X480, 640X400, 640X350).
•
Five non-standard horizontal frequency control outputs in predefined frequency range.
•
Power saving mode - It can detect the conditions of monitor to decide which one will be selected
as following: ON/STANDBY/SUSPEND/OFF mode.
•
Fixed polarity outputs on both horizontal and vertical synchronous signals.
Weltrend Semiconductor, Inc.
2F., No. 24, Industry E. 9th Rd.
Science-Based Industrial Park
Hsin-Chu, Taiwan, R.O.C.
Tel: 886-35-780241
Fax: 886-35-770419
1
214517066.009.png
WT8045
Synchronous Signal Discriminator and
Power Saving Detector for Green Monitor
•
Power supply voltage: DC 5 volts; but for those pins with open-drain structure, such like the
mode select control output and frequency discrimination control output pins, can be connected to
12 volts through pull-high resistor.
APPLICATION
•
Auto size control for Multi-Sync Display Monitors
ORDERING INFORMATION
Part No.
Package
Note
WT8045N24P1
P-DIP 24L
V * 128
WT8045N24P3
P-DIP 24L
Without Mute
WT8045N24P4
P-DIP 24L
Without Mute
WT8045N24P5
P-DIP 24L
V * 1
WT8045N24P6
P-DIP 24L
With Mute
WT8045N24P7
P-DIP 24L
Without Mute
WT8045N24P8
P-DIP 24L
With Mute
WT8045N28P1
P-DIP 28L (skinny)
V * 128 Without Mute
WT8045N28P2
P-DIP 28L (skinny)
V * 128 Without Mute
WT8045N28P3
P-DIP 28L (skinny)
V * 1 Without Mute
WT8045N28P4
P-DIP 28L (skinny)
V * 128 With Mute
WT8045N28P5
P-DIP 28L (skinny)
V * 1 With Mute
WT8045N28P6
P-DIP 28L (skinny)
V * 1 Without Mute
WT8045N28P7
P-DIP 28L (skinny)
V * 128 With Mute
WT8045N28P8
P-DIP 28L (skinny)
V * 1 With Mute
WT8045N32
P-DIP 32L
--
Weltrend Semiconductor, Inc.
2F., No. 24, Industry E. 9th Rd.
Science-Based Industrial Park
Hsin-Chu, Taiwan, R.O.C.
Tel: 886-35-780241
Fax: 886-35-770419
2
214517066.010.png 214517066.011.png 214517066.012.png 214517066.001.png 214517066.002.png
WT8045
Synchronous Signal Discriminator and
Power Saving Detector for Green Monitor
PIN CONFIGURATION
WT8045N24P1
WT8045N24P3
OSCin
1
24
VDD
OSCin
1
24
VDD
OSCout
2
3
4
5
6
7
8
9
23
1024x768(56.5K)
OSCout
2
3
23
1024x768(56.5K)
HSin
22
1024x768 (NI)
HSin
22
1024x768 (NI)
VSin
H_out
V_out
21
1024x768 (I)
VSin
H_out
V_out
4
5
6
21
1024x768 (I)
20
800x600(48K)
20
800x600(48K)
19
800x600(37.5K)
800x600(35.2K)
19
800x600(37.5K)
800x600(35.2K)
F43.5K
F36.2K
18
F43.5K
F36.2K
7
8
18
17
640x480
17
640x480
F33K
16
640x400
F33K
9
10
11
16
640x400
QV128
QVRC
10
11
12
15
640x350
Vss
15
640x350
14
QH
PM1
14
QH
Vss
13
QHRC
PM3
12
13
QHRC
WT8045N24P4
WT8045N24P5
OSCin
1
24
VDD
OSCin
1
24
VDD
OSCout
2
3
4
5
6
7
8
23
1024x768 (I)
OSCout
2
3
4
5
6
23
1024x768(56.5K)
HSin
22
800x600(37.5K)
HSin
22
1024x768 (NI)
VSin
Hout
Vout
21
NC
VSin
21
1024x768 (I)
20
800x600(35.2K)
H_out
V_out
20
800x600(48K)
19
640x480(31.5K)
19
800x600(37.5K)
800x600(35.2K)
F36.2K
F33K
NC
NC
VSS
18
640x400(31.5K)
F43.5K
F36.2K
7
8
18
640x480
(37.5K/72Hz)
17
17
640x480
9
10
11
12
16
640x350
(31.5K/37.5K)
F33K
9
10
11
12
16
640x400
15
NC
QV1
QVRC
15
640x350
14
PM3
14
QH
PM1
13
PM2
Vss
13
QHRC
Weltrend Semiconductor, Inc.
2F., No. 24, Industry E. 9th Rd.
Science-Based Industrial Park
Hsin-Chu, Taiwan, R.O.C.
Tel: 886-35-780241
Fax: 886-35-770419
3
214517066.003.png 214517066.004.png
WT8045
Synchronous Signal Discriminator and
Power Saving Detector for Green Monitor
WT8045N24P6
WT8045N24P7
OSCin
1
24
VDD
OSCin
1
24
VDD
OSCout
2
3
4
5
6
7
8
9
23
1024x768(56.5K)
OSCout
2
3
4
5
6
7
8
9
23
1024x768(56.5K)
HSin
22
1024x768 (NI)
HSin
22
1024x768 (NI)
VSin
H_out
V_out
21
1024x768 (I)
VSin
H_out
V_out
21
1024x768 (I)
20
800x600(48K)
20
800x600(48K)
19
800x600(37.5K)
19
800x600(37.5K)
F43.5K
18
800x600(35.2K)
F43.5K
F36.2K
18
800x600(35.2K)
F36.2K
17
640x480
17
640x480
F33K
16
640x400
F33K
16
640x400
Vss
10
11
12
15
640x350
Vss
10
11
12
15
640x350
Mute
14
QH
P52K
14
PM3
PM3
13
QHRC
PM1
13
PM2
WT8045N24P8
WT8045N32
24
OSCin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
VDD
OSCin
1
VDD
OSCout
31
1024x768(56.5K)
OSCout
2
3
23
1024x768(56.5K)
HSin
30
29
28
27
26
25
24
23
1024x768 (NI)
HSin
22
1024x768 (NI)
VSin
H_out
V_out
1280x1024(64K)
VSin
H_out
V_out
4
5
6
21
1024x768 (I)
1024x768 (I)
800x600(48K)
20
800x600(48K)
F43.5K
F36.2K
800x600(37.5K)
800x600(35.2K)
19
800x600(37.5K)
800x600(35.2K)
F43.5K
F36.2K
7
8
18
F33K
640x480
QV128
QVRC
640x400
17
640x480
22
640x350
F33K
9
10
11
12
16
640x400
Vss
21
QH
Vss
15
640x350
SELPIN
20
QHRC
P52K
14
PM3
-QH
F52K
F60K
19
PM3
18
PM2
PM1+PM2
13
Mute
PM1
17
Weltrend Semiconductor, Inc.
2F., No. 24, Industry E. 9th Rd.
Science-Based Industrial Park
Hsin-Chu, Taiwan, R.O.C.
Tel: 886-35-780241
Fax: 886-35-770419
4
214517066.005.png 214517066.006.png
WT8045
Synchronous Signal Discriminator and
Power Saving Detector for Green Monitor
WT8045N28P1
OSCin
1
28
27
26
VDD
OSCout
2
3
4
5
6
1024x768(56.5K)
HSin
1024x768 (NI)
VSin
25
24
23
1024x768 (I)
H_out
V_out
800x600(48K)
800x600(37.5K)
F43.5K
F36.2K
7
8
22
800x600(35.2K)
21
640x480
F33K
9
10
20
640x400
QV128
QVRC
19
640x350
11
12
13
14
18
QH
Vss
17
QHRC
F52K
16
PM3
PM1
15
PM2
WT8045N28P3
OSCin
1
28
27
26
VDD
OSCout
2
3
1024x768(56.5K)
HSin
1024x768 (NI)
VSin
4
5
6
25
24
23
1024x768 (I)
H_out
V_out
800x600(48K)
800x600(37.5K)
800x600(35.2K)
F43.5K
F36.2K
7
8
22
21
640x480
F33K
9
20
640x400
QV1
QVRC
10
11
12
19
640x350
18
QH
Vss
17
QHRC
F52K
13
14
16
PM3
PM1
15
PM2
Weltrend Semiconductor, Inc.
2F., No. 24, Industry E. 9th Rd.
Science-Based Industrial Park
Hsin-Chu, Taiwan, R.O.C.
Tel: 886-35-780241
Fax: 886-35-770419
5
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