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MSM7654, MSM7654GA, MSM7661B

Table of contents:
Info of MSM7654
Info of MSM7654GA
Info of MSM7661B

MSM7654, MSM7654GA, MSM7661B Selling Leads, Datasheet

MFG:OKI Package Cooled:QFP-64 D/C:2003

MSM7654, MSM7654GA, MSM7661B Datasheet download

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Part Number: MSM7654

MFG: OKI

Package Cooled: QFP-64

D/C: 2003

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MSM7654 General Description

The MSM7654, which is a digital video encoder supporting NTSC/PAL formats, converts digital image data to an analog video signal.

The encoder can receive the digital image or RGB digital image signals conforming to ITU-R BT601 as an input signal.

The encoder can output simultaneously the composite video and S-video signals, and it can also output the RGB analog signal by switching.

The encoder can control luminance (Y) signal output levels of the composite video and S-video signals.

MSM7654 Maximum Ratings

Symbol	Parameter	Conditions	Rating	Unit
DV_DD	Power Supply Voltage	-	0.3 to +4.5	V
AV_DD	Power Supply Voltage	-	0.3 to +4.5	V
V_I	Input Voltage	DV_DD = 3.3 V	0.3 to +5.5	V
I_O	Analog Output Current	-	50	mA
P_W	Power Dissipation	-	600	mW
T_STG	Storage Temperature	-	55 to +150	°C

MSM7654 Features

• Video signal system: NTSC/PAL
• Scanning system: interlaced/noninterlaced (NTSC : 262 lines/PAL : 312 lines)
• Input digital level: conforms to ITU-R601 (CCIR601)
• Input-output timing: conforms to ITU Rec. 656 or ITU-R BT624-4
• Input signal sampling ratio : Y:Cb:Cr = 4:2:2 or 4:1:1/R:G:B = 8:8:8
• Supported input interface
` ITU Rec. 656
` YCbCr format (8-bit input)
` ITU-R601 (8-bit (Y) + 8-bit (CbCr) input)
` RGB (24-bit input)
• Pixel frequency (Sampling frequency) :
` 12.272727 MHz (24.54545 MHz) : NTSC Square Pixel
` 13.5 MHz (27 MHz) : NTSC/PAL ITU-R BT601
` 14.31818 MHz (28.63636 MHz) : NTSC 4Fsc
` 14.75 MHz (29.5 MHz) : PAL Square Pixel
• Output format
` Selectable composite & S-video or RGB
` 37.5 driving capability
• Master or slave operation (slave operation only in ITU Rec.656 mode)
• Internal 3ch 10-bit DAC
• 3-bit title graphics can be displayed (only for composite and S-video signals)
• Color bar function
• I2C-bus host interface function
• Brightness level adjust of 100% to 68.75% (only for composite and S-video signals)
• CENLOCK control
• 3.3 V single power supply (each I/O pin is 5 V tolerable)
• Package 64-pin plastic QFP (QFP64-P-1414-0.80-2K) (Product name: MSM7654GA)

MSM7654 Typical Application

• Video CD
• Video game equipment
• Electronic still cameras
• Video filing systems
• Video cameras
• Videophones
• Multimedia equipment
• Video printers
• Videoconferencing systems
• Scanners
• Video graphics boards
• Monitoring systems

MSM7654 Connection Diagram

MSM7661B 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.

The A-to-D converted data is data sampled at pixel clock frequency or double pixel clock frequency (the built-in decimation filter is used). Input signal synchronization can lock synchronization and color burst at high speed through internal digital processing.

The MSM7661B is upward compatible with the MSM7661. It provides additional features which are added to the MSM7661 indicated by the mark and is superior to the MSM7661 in picture quality and synchronization stability. The device, which includes an additional register added to the MSM7661, has electrical characteristics which are nearly equal to those of the MSM7661.

The MSM7661B allows a pin-for-pin replacement with the MSM7661.

MSM7661B Maximum Ratings

Symbol	Parameter	Conditions	Rating	Unit
V_DD	Power Supply Voltage	-	0.3 to +4.5	V
V_I	Input Voltage	-	0.3 to +5.5	V
P_W	Power Dissipation	-	800	mW
T_STG	Storage Temperature	-	55 to +150	°C

MSM7661B Features

• 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)
   nSwitchable 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)
• 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)

MSM7661B Connection Diagram

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