MAX9526AEI/V-T(2010) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX9526AEI/V-T Datasheet PDF : 38 Pages
| |||
Low-Power, High-Performance
NTSC/PAL Video Decoder
Table 7. Output Test Signal Setup
DESCRIPTION
Default mode, test pattern
has last timing standard
used at output
STDSEL
REGISTER
0x04
B7-5
AUTOD
REGISTER
0x04
B4
TGENAB
REGISTER
0x0C
B5
TGTIM
REGISTER
0x0C
B4
TGSRC
REGISTER
0x0C
B3
0X0
1
0
X
X
OUTPUT OF DECODER
NO VIDEO
INPUT
VALID VIDEO
INPUT
Test pattern Decoded input
Force test pattern with last
timing standard used at
0X0
1
1
X
1
Test pattern
Test pattern
output
Force test pattern with
XXX
X
1
0
0
50Hz test 50Hz test pattern
50Hz timing
pattern
Force test pattern with
XXX
X
1
1
0
60Hz test 60Hz test pattern
60Hz timing
pattern
Force 50Hz timing for
X0X
0
0
X
X
50Hz test
Decoded input
decoding and test pattern
pattern
with 50Hz timing
Force 60Hz timing for
X1X
0
0
X
X
60Hz test
Decoded input
decoding and test pattern
pattern
with 60Hz timing
Test Pattern Generation
In default mode, the MAX9526 outputs a test pattern
when video is removed. The timing standard for the test
pattern is the last timing standard that is at the output of
the decoder. If the MAX9526 is reset and has no video
inputs, the default output timing standard is 525 lines
(60Hz). See register 0x04 for manually configuring the
video standard decoding. Table 7 gives some common
examples of setting up video standards and test pat-
tern generation.
Test Pattern Enable (TGEnab)
1 = Force a test pattern at video output.
0 = Output a test pattern if no video is present at the
video inputs (default).
Test Signal Output Timing Standard (TGTIM)
1 = 525 line, 60Hz frame rate.
0 = 625 line, 50Hz frame rate (default).
This bit is ignored if TGSRC = 1.
Test Signal Timing Source (TGSRC)
1 = Test generator uses timing from incoming video
signal (if signal is valid).
0 = Test generator uses internally generated timing
(default).
00 = Black screen (default)
01 = Blue screen
10 = 75% color bars
11 = 100% color bars
Color Bar Select (CBAR)
30 ______________________________________________________________________________________
Share Link: 