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2.
MCU
Monitor MCU Specification
Frequency Specification
H-freq.
: 29.5K – 70KHz
V-freq.
: 43 – 160Hz
Judge polarity only when frequency is 31.5 KHz and 37.8 KHz
Support composite sync detection
System Architecture
1.
MCU – Weltrend WT6232, 32K bytes ROM size
2.
EEPROM – 24C08 series, 8K bit, with ID code for identify initialization.
3.
OSD – Myson MTV016N-12
Input
1. Sync input
– 2 pins for H-sync & V-sync frequency inverted input.
2. Key input
– 2 pins for A/D key input (SELECT. UP, DOWN and RECALL).
3. Burn-in ID input – 1 pins for Burn-in ID input.
4. Reset input
– low pulse for reset MCU
5. Crystal input – 2 pins using 8MHz crystal.
Output – MCU digital pin
1. Degauss – Active high pulse for 2.5 sec when in degauss. MCU will activate degauss while power on.
2. CS output – 3 pins (CS2, CS1, CS0) for CS control
H-sync
H-sync < 33.25KHz
33.25KHz < H-sync < 36.50KHz
36.50KHz < H-sync < 40.50KHz
40.50KHz < H-sync < 45.10KHz
45.10KHz < H-sync < 51.60KHz
51.60KHz < H-sync < 55.10KHz
55.10KHz < H-sync < 62.15KHz
62.15KHz < H-sync
Mode change
CS2
CS1
0
0
0
1
0
1
1
0
1
0
1
1
1
1
1
1
0
0
41
CS0
0
0
1
0
1
0
0
1
0
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