MTV003 ETC-unknow, MTV003 Datasheet - Page 4

• Manufacturer Part Number: MTV003
• Description: Microprocessor Compatible Monitor Controller
• Manufacturer: ETC-unknow

for each converter by setting the corresponding register.
3.3 SYNC Processor
The sync processor contains the following functions: polarity detection, presence detection, H-Freq counter,
V-Freq counter and sync signal separation for input SYNC sources (HS and VS). It can be programmed to
change the detected polarity status and output polarity of SYNC pins (HBLANK and VBLANK) by using the
command interface. The timing diagrams of sync processing are shown as Fig. 2 in section 8.0. The internal
SYNC signals (Hsync and Vsync) are extracted from different sources according to the following modes of
operation.
3.4 H-Freq Table
After the "start H-Freq count" command is issued over 10 ms (for 15.7KHz) and HCFF(H-Freq Count Finished
Flag) is set High, the H-Freq output (HF9 - HF0) is valid. The output value of H-Freq is calculated using the
following formula:
3.5 V-Freq Table
After the "start V-Freq count" command is issued over 120 ms (for 50HZ) and VCFF (V-Freq Count Finish Flag)
is set High, the V-Freq output (VF8 - VF0) is valid. The output value of V-Freq is calculated according to the
following formula:
1
2
3
4
10 40
11 48
12 50
13 57
14 60
15 64
16 100
1
2
3
4
5
6
7
8
9
Separate(H+V)
Composite(H/V)
Suspend
Off
15.7
18.7
21.8
30
31.5
33.5
35.5
36.8
38
output value = [(1/f Hfreq(KHz ) ) x 64 x 4000] / 16
output value = [(4/f V freq(Hz ) ) x 4000000] / (64 x 16)
H-Freq(KHz)
Mode
MYSON
TECHNOLOGY
Output value hexadecimal 11 bits decimal
not present
not present
present
present
VS
2DD
1DD
3FB
1FB
1C2
14D
0FA
1B2
1A5
10A
0A0
357
215
190
140
118
not present
not present
present
present
HS
4/13
1019
855
733
533
507
477
450
434
421
400
333
320
280
266
250
160
HS = H or H/V sync
HS= H/V sync
Comment
Tolerance (%)
-
-
0.0981354
0.1169591
0.1364256
0.1876172
0.1972386
0.2096436
0.2222222
0.2304147
0.2375297
0.2500000
0.3003003
0.3125000
0.3571428
0.3759398
0.4000000
0.6250000
MTV003 Revision 2.3 07/01/1998
MTV003N
(MTV003)