GF9330 Data Sheet
3.8 RESET
The RESET pin will reset all internal logic to it's default conditions when set LOW.
On power up it is recommended to reset the device to ensure all internal registers
are set to their default state. When applying a reset, the GF9330 will load in the
STD[4:0] and MODE[2:0] settings from the external pins. If no further configuration
is done, these settings will be used for the operation of the device.
3.9 Modes of Operation
The GF9330 supports stand-alone, co-processor enabled, pass-through and film
rate down conversion modes of operation. Table 3-6: Modes of Operation:
MODE[2:0] shows the basic operating modes for the GF9330 as selected using the
MODE[2:0] control bits or through the host interface using the MODE[2:0] register,
Address [0][7:5].
Table 3-6: Modes of Operation: MODE[2:0]
Mode
Description
000
001
Motion adaptive de-interlacing of input video signal.
De-interlacing of input video signal with pull-down compensation.
Film rate down conversion mode (60Hz -> 24Hz).
Film rate down conversion mode (60Hz -> 24Hz Segmented Frame)
Reserved
010
011
100 to 110
111
Video pass through mode.
3.9.1 De-Interlacing Mode (MODE=000)
When set to operate as a de-interlacer the GF9330 can operate as a “stand-alone”
device performing motion adaptive processing. To enable multi-directional edge
and vertical motion detection the GF9330 must be connected to the GF9331 as
described in 3.3 Seamless Interface to the GF9331 Motion Co-processor for
Directional Filter Control.
Segmented frame to progressive frame conversion is also supported in this mode.
This function is performed when the progressive segmented frame input video
format is selected on either the external pins or host interface register STD[4:0].
3.9.2 De-interlacing Mode with Pull-down Compensation (MODE=001)
When set to operate in this mode, the GF9330 can operate as a “stand-alone”
device performing motion adaptive processing with added 3:2 pull-down
compensation. To enable multi-directional edge and vertical motion detection the
GF9330 must be connected to the GF9331 as described in 3.3 Seamless Interface
to the GF9331 Motion Co-processor for Directional Filter Control.
Proprietary and Confidential 18283 - 4
June 2004
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