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Wells-Gardner Electronics Corporation
17
8.DESCRIPTION OF CIRCUIT OPERATION:
8-1. Mode Control.
8-1.1 H-Sync is inputted to pin 30 of IC601, V-Sync to pin 29 of IC601 for each mode and pin
27, 26
of IC601 output always positive polarity sync.
8-1.2 The outputs from IC601 are as below (See table below)
Hf Vf
(CS3) (CS2) (CS1) OFF ST-BY SUS-P LED
KHz Hz
38 39 40 5 3 4 6
1 31 70 720x400 28 ~32.9 68 ~ 72 L L L L H L L
2 31 60 640X480 " 58 ~ 62 L L L L H L L
3 35 86 1024X768 33 ~ 35.9 84 ~ 88 H L L L H L L
4 38 75 640X480 36 ~ 40.9 73 ~ 77 H H L L H L L
5 38 60 800X600 36 ~ 40.9 58 ~ 62 H H L L H L L
6 47 75 800X600 41~ 51.9 73 ~ 77 H L H L H L L
7 48 72 800X600 " 70 ~ 74 H L H L H L L
8 48 60 1024X768 " 58 ~ 62 H L H L H L L
9 53 85 800X600 52 ~ 61.9 83 ~ 87 L H H L H L L
10 56 70 1024X768 " 68 ~ 72 L H H L H L L
11 60 75 1024X768 " 73 ~ 77 L H H L H L L
12 64 60 1280x1024 62 ~ 70 58 ~ 62 H H H L H L L
13 69 85 1024x768 62 ~ 70 83 ~ 87 H H H L H L L
OUTPUT (MCU PIN)
Vf (Hz)
ResolutionNo.
Frequency
Hf (KHz)
Range of Frequency