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PDF MN89201 Data sheet ( Hoja de datos )
| Número de pieza | MN89201 | |
| Descripción | VGA-NTSC Scan Converter | |
| Fabricantes | Panasonic | |
| Logotipo |  |
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For Information Equipment
MN89201
VGA-NTSC Scan Converter
Overview
The MN89201 converts PC/AT VGA (640 × 480) display
data into an NTSC video signal without requiring an external
frame memory. It uses filtering to eliminate flicker and
produce a high-quality television image.
Note: PC/AT and VGA are registered trademarks of International
Business Machines Corporation.
Features
Conversion of PC/AT VGA (640 × 480) display data
into NTSC video signal
• 8-bit inputs for VGA R, G, and B signals
Horizontal frequency: 31.5 kHz
Vertical frequency: 59.94 Hz
• Conversion of non-interlaced display to interlaced
display
• Built-in phase-locked loop for synchronizing VGA
and NTSC data clocks
• Conversion from RGB to YCrCb (4:2:2) format
• Data output in NTSC display format (YCrCb24 or
YCrCb16-bit)
Flicker prevention
• Choice of line filters with 3 taps for preventing
flicker
Processing with only line memory
• No need for external VRAM
• All processing completes within built-in line memory
Applications
Point-of-sale terminals, Factory automation terminals,
word processors, and other terminals
Choice of readout clocks for NTSC output
Choice 1: Choice of clock that has arbitrary
frequency and synchronizes with
VGA clock
External voltage-controlled
oscillator in addition to built-in
phase-locked loop
Choice 2: Choice of clock that has arbitrary
frequency and does not synchronize
with VGA clock
External oscillator
Choice 3: Clock with half frequency of the
VGA-dot-clock
Choose the clock matching the NTSC encoder.
The MN89201 offers high-quality NTSC-compatible
output from a compact configuration.
1 page  
For Information Equipment
Pin Descriptions (continued)
Pin No.
Symbol
I/O
26 MOD422F
I
27 MODVFIL
28 MODHFIL
29 MODPIN
I
I
I
30
31 ,32
33
MINTEST
MON[1:0]
SXRST
34 MODCRCB
I
I
I
I
35 MODCHAV
I
MN89201
Function Description
Cr and Cb output mode specification
"L" level: Cr and Cb are both 8 bits (24-bit mode)
"H" level: Cr and Cb are multiplexed into 8 bits (16-bit mode)
The combined output is sent to CROUT[7:0].
The MODCRCB pin specifies the multiplex order.
This pin switches the vertical filter ON and OFF.
"L" level: OFF; "H" level: ON
This pin switches the horizontal filter ON and OFF.
"L" level: OFF; "H" level: ON
This pin selects the setting of the filter mode.
"H" level: Ignore mode register setting and take filter settings from
pins.
"L" level: Ignore pins and take filter settings from mode register.
Test pin Keep this pin at "L" level.
Test pin Keep this pin at "L" level.
This signal resets the synchronization counter only.
Active "H"
This pin specifies the bit order for multiplexed Cr and Cb output data
in the 16-bit mode.
"H" level: Cr before Cb
"L" level: Cb before Cr
This pin selects the default values for the parameter registers
determining the vertical position of the television image.
"H" level: Use the default setting that centers the PC image in the
television display.
Setting value is 45 for back porch and 530 for active end.
These settings cause one or two PC lines to be lost at both
the top and bottom.
"L" level: Use the default settings that align the center of the PC
image at two or three lines below the center of the
television display.
Setting value is 35 for back porch and 514 for active end.
These settings doesn’t lose the tops of the images but
cause three or four lines to be lost at the bottom.
5 Page 
For Information Equipment
Package Dimensions (Unit: mm)
QFH128-P-1818
96
97
20.0±0.2
18.0±0.2
65
64
MN89201
128
1
(1.25)
33
32
0.5 0.2±0.1
1.0±0.2
0.1 SEATING PLANE
0.5±0.2
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet MN89201.PDF ] | |
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