GENERAL DESCRIPTION
The MSM7661B is an LSI device which converts digitally sampled NTSC or PAL video signals to 8-bit format based on ITU-RBT601.
The input video signals available are composite video signals and S video signals.
The composite video signals are converted to YUV data via a 2-dimensional Y/C separation circuit.

FEATURES (• indicates a new feature compared with MSM7660. ■ indicates a new feature compared with MSM7661.)
• Input video signals include the following two types of digital data that are A-to-D converted at pixel frequency or double pixel frequency :
    NTSC/PAL composite video signal
    NTSC/PAL S video signal
° 8-bit Y/8-bit C (CbCr) output (conforms to ITU-RBT601)
    YCbCr 4 : 2 : 2
    YCbC4 : 1 : 1
■ YCbCr 8-bit multiplex output (27 MHz) (not including SAV and EAV)
• 2-dimensional Y/C separation using adaptive comb filter (this filter is bypassed for S video signal input)
    NTSC: 3 lines/2 lines
    PAL: 2 lines (3 virtual lines)
• Input signal synchronization can lock synchronization and color burst at high speed through internal digital processing.
° Sampling frequency
    13.5 MHz (ITU-R601)
    12.27 MHz (NTSC Square Pixel)
    14.31818 MHz (NTSC 4Fsc)
    14.75 MHz (PAL Square Pixel)
• Internal AGC/ACC circuit
    Switchable between AGC and MGC (fixed gain)

■ Switchable between ACC and MCC (fixed gain)
• Built-in decimation filter located in the input stage allows easy configuration of an external filter circuit (located ahead of A/D converter).
• Automatic NTSC/PAL recognition (only for ITU-RBT.601)
• Sleep mode
• Multiplex signal recognition (Teletext) Data during vertical blanking is output in 8 bits in Through mode.
° I2C-bus interface
• 3.3 V single power supply (each I/O pin is 5 V tolerable)
• Package:
    64-pin plastic QFP (QFP64-P-1414-0.80-BK) (Product name: MSM7661B GS-BK)