msm7654 Oki Semiconductor, msm7654 Datasheet - Page 13

• Manufacturer Part Number: msm7654
• Description: Ntsc/pal Digital Video Encoder
• Manufacturer: Oki Semiconductor

¡ Semiconductor
• Overlay Control Block
• YUV to RGB Converter Block
• Black & Blank Pedestal Block
• Interpolator + LPF Block
• I
• Sync Generator & Timing Controller Block
• Color Burst Generator Block
• Subcarrier Generator Block
• Low Pass Filter (LPF) Block
• DAC Block
This block selects input image data or YUV Color Generator output signals.
It is determined by the level of the control signal (OLC, CR [3]), as shown below: (x : don't care)
CR [3] = 1, OLC = x: Selects color bar signal (YUV Color Generator output signal).
CR [3] = 0, OLC = 1: Selects overlay signal (YUV Color Generator output signal).
CR [3] = 0, OLC = 0: Selects input image data.
This block converts YUV signals separated by the prologue block into RGB signals.
This block adds sync signals at the luminance side to luminance signals.
This block executes data interpolation and the elimination of high frequency components by
LPF for input chrominance signals.
This is the serial interface block based on I
Internal registers (MR0 and MR1) and command registers (CR0 and CR1) can be set from the
master side.
When writing to the internal registers other than MR1 [7] (black level control) and CR0 [2:1]
(overlay level), written contents are immediately set to them. It is during the vertical blanking
period that written contents are set to MR1 [7] and CR0 [2:1].
This block generates sync signals and control signals.
This block operates in slave mode, which performs external synchronization, and in master
mode, which internally generates sync signals.
Outputs U and V components of amplitude of burst signals.
Executes color subcarrier generation.
This block performs upsampling at CLKX2 for luminance signals and chrominance signals
modulated with CLKX1 divided from CLKX2. Interpolation processing is executed in this
process.
This block converts digital video signals to analog video signals with a 10-bit accuracy and
outputs them. Since the analog output pins (YA, CVBSO, CA) are current outputs, these pins
should be connected to external resistors. See "Analog output reference circuit in APPLICATION
CIRCUIT EXAMPLE" for resistance values.
2
C Control Logic Block
2
C standard of Phillips Corporation.
MSM7654
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