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BU1425AKV Datasheet(PDF) 1 Page - Rohm |
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BU1425AKV Datasheet(HTML) 1 Page - Rohm |
1 / 32 page 1 Multimedia ICs NTSC / PAL digital RGB encoder BU1425AK / BU1425AKV The BU1425AK / BU1425AKV are ICs which convert digital RGB / YUV input to composite (NTSC / PAL / PAL60), luminance (Y), and chrominance (C) signals, and outputs the results. •Applications Video interfaces for VIDEO-CDs and CD-G decoders •Features 1) Input clocks supported 27.0 / 13.5MHz 28.636 / 14.318MHz 28.375 / 14.1875MHz 35.4695 / 17.73475MHz 2) 24-bit RGB and 16-bit YUV input signals are sup- ported. 3) Both master and slave systems are supported. 4) 9-bit high-speed DAC is used for DAC output of composite VIDEO, Y, and C signals. 5) Internal 8-color OSD output function is provided. 6) FSC-TRAP on the Y channel can be turned on and off. 7) C channel is equipped with an internal chromi- nance band-pass filter in addition to the U.V. low- pass filter. 8) 5V single power supply, low power consumption (0.4W typ.) 9) Y and C output can be turned off (the power con- sumption with Y and C off is 0.25W typ.). 10) In the Master mode, applying 3.3V to the I / O VDD and 5.0V to other VDDs produces HSY and VSY output with an amplitude of 3.3V. This enables direct connection to LSIs that use a power supply voltage of 3.3V. (The clock output for the OSD has a fixed amplitude of 5.0V.) 11) In the Slave mode, applying voltage to the I / O VDD only, and applying 0V to other VDDs, enables a cur- rent consumption of 0 even when RGB DATA, HSY, VSY, and OSD DATA are in the active state. |
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