msm7650 Oki Semiconductor, msm7650 Datasheet

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msm7650

Manufacturer Part Number
msm7650
Description
Ntsc/pal Digital Encoder
Manufacturer
Oki Semiconductor
Datasheet
E2F0003-27-X1
¡ Semiconductor
¡ Semiconductor
MSM7650
NTSC/PAL Digital Encoder
GENERAL DESCRIPTION
The MSM7650 is a digital NTSC/PAL encoder. By inputting digital image data conforming to
CCIR Rep624-4, it outputs analog composite video signals and analog S video signals. For the
scanning system, interlaced or noninterlaced mode can be selected.
Since the MSM7650 is provided with pins dedicated to overlay function, text and graphics can
be superimposed on a video signal.
In addition, this encoder has an internal 9-bit DAC. So, when compared with using a conventional
analog encoder, the number of components, the board space, and points of adjustment can
greatly be reduced, thereby realizing a low cost and high-accuracy system.
The host interface provided conforms to Philips's I
interconnections between this encoder and mounting components.
The internal synchronization signal generator (SSG) allows the MSM7650 to operate in master
or slave mode.
FEATURES
• Video signal system: NTSC/PAL
• Scanning system: interlaced/noninterlaced
• Input digital level: conforms to ITU-601 (CCIR601)
• Input-output timing: conforms to CCIR Rep 624-4
• Input signal (sampling ratio)
• Supported sampling rates
• Internal SSG circuit (internally generates sync signals)
• Operation by external synchronization possible
• Internal 3ch 9-bit DAC (samples by double frequency)
• 3-bit title graphics can be displayed
• I
• Package
Y:Cb:Cr (4:2:2/4:1:1)
80-pin plastic QFP (QFP80-P-1420-0.80-BK)
2
C-bus host interface function
NTSC 4Fsc (14.32 MHz)
NTSC ITU-R601 (13.5 MHz)
NTSC Square Pixel (12.27 MHz)
PAL ITU-R601 (13.5 MHz)
PAL Square Pixel (14.75 MHz)
(Product name: MSM7650GS-BK)
2
C specifications, which reduces
Previous version: Oct. 1997
This version: Jan. 1998
MSM7650
1/34

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msm7650 Summary of contents

Page 1

... CCIR Rep624-4, it outputs analog composite video signals and analog S video signals. For the scanning system, interlaced or noninterlaced mode can be selected. Since the MSM7650 is provided with pins dedicated to overlay function, text and graphics can be superimposed on a video signal. In addition, this encoder has an internal 9-bit DAC. So, when compared with using a conventional analog encoder, the number of components, the board space, and points of adjustment can greatly be reduced, thereby realizing a low cost and high-accuracy system ...

Page 2

... Semiconductor APPLICATIONS • Video game equipment • Electronic still camera • Video printer • Video camera • Scanner • Image file system • CD-ROM • Video graphics board • Videophone • Video conference system • Multimedia equipment • Digital VTR MSM7650 2/34 ...

Page 3

RESET_L Y Level YD[7:0] Y Limitter Converter U Level CD[7:0] C Limitter Converter & V Level UV Selector Converter OLR YUV Color OLG generator OLB OLC VSYNC_L Sync Generator HSYNC_L & BLANK_L Timing Controller CLKX1 MS INTERLACE MODE[2:0] Black & ...

Page 4

... V DD3 13 GND CT8 14 15 CT7 CT6 16 17 CT5 18 CT4 CT3 19 20 CT2 CT1 21 22 CT0 23 V DD5 GND No-connection pin 80-Pin Plastic QFP MSM7650 64 V DD5 63 V DD3 62 GND 61 OLR 60 OLG 59 OLB 58 OLC 57 MODE[0] 56 MODE[1] 55 MODE[2] 54 INTERLACE RESET_L 51 ...

Page 5

... Analog chrominance signal output pin Analog power supply Digital GND Not connected 3.3V power supply Digital GND Input pin 1 for testing. Normally, fixed to "0". Input pin 2 for testing. Normally, fixed to "0". Input pin 3 for testing. Normally, fixed to "0". MSM7650 5/34 ...

Page 6

... Overlay text color (Green component) Overlay text color (Red component) Digital GND 3.3V power supply 5.0V power supply Digital image luminance signal data input pin Level is based on ITU-601. YD7 is MSB. Digital image chrominance signal data input pin Level is based on ITU-601. CD7 is MSB. MSM7650 010: NTSC 4Fsc 6/34 ...

Page 7

... Ta=25˚C V SDA, Ta=25˚C 0.8V IH2 DD5 CLKX1,CLKX2, V 2.4 IH3 Ta=25˚C V — 0 — 0.0 Vrefex — — Riadj — — R — — L Vrefin — 1.15 MSM7650 Rating Unit –0 –0.3 to +4.5 V –0.3 to +4.5 –0 +0.3 V DD5 40 mA 800 mW –55 to +150 °C Typ. Max. Unit 5.0 5.5 3.3 3.6 V 3.3 3.6 0.0 — V 0.0 — ...

Page 8

... CLKX2=27.0MHz RESET_L="L" I — DDS CLKX1=CLKX2=0Hz SDAV Low level, I =3mA SDAI During Acknowledge 3 O Vrefin — 1.15 R — L SINL SDNL MSM7650 =3.3V±0.3V, V =5V±10%) DD3 DD5 Typ. Max. Unit — DD5 — 0.6 V — — 120 140 mA ...

Page 9

... NTSC 4Fsc T S NTSC Square Pixel ITU-RS601 t — — — — Rpull_up=4.7kW C_SCL t D_SCL t Rpull_up=4.7kW L_SCL MSM7650 =3.3V±0.3V, V =5V±0.5V) DD3 DD5 Min. Typ. Max. Unit — 67.8 — ns — 69.8 — ns — 81.5 — ns — 74.1 — ns 7.03 — ...

Page 10

... The phase relations between CLKX1 and CLKX2 are shown below. 1. When the CLKX1 pulse rises later than the CLKX2 pulse. CLKX2 CLKX1 2. When the CLKX1 pulse rises earlier than the CLKX2 pulse. CLKX2 CLKX1 Tccd1: 20.14 [ns] Tccd2: 3.27 [ns valid invalid C_SCL t L_SCL Tccd1 Tccd2 MSM7650 valid 10/34 ...

Page 11

... This block selects input image data or YUV Color Generator output signals determined by the level of the control signal (OLC, CR [2]), as shown below OLC = ?: Selects color bar signal (YUV Color Generator output signal OLC = 1: Selects overlay signal (YUV Color Generator output signal OLC = 0: Selects input image data. MSM7650 11/34 ...

Page 12

... Outputs U and V components of amplitude of burst signals. • Subcarrier Generator Executes color subcarrier generation. • Interpolation Filter (IPF) This block performs upsampling at CLK X 2 (double speed CLKX1) for luminance signals and chrominance signals modulated with CLKX1. Interpolation processing is executed in this process standard of Phillips Corporation. MSM7650 12/34 ...

Page 13

... CLKX1 4:2:2 sampling Digital Level 240(112) 128(0) Black Level 16(–112) Note) Values are in offset binary format. (Values in parenthesis are in 2's complement format.) Input chrominance signal level CLKX1 MSM7650 C data 4:1:1 sampling 13/34 ...

Page 14

... DAC data Lumi [IRE] Composite Wave Form (NTSC) 480 133 389 100 359 89 307 70 276 59 227 41 197 30 169 20 144 11 135 7.5 114 0 59 –20 4 –40 NTSC composite signal (setup: 7.5 IRE) Yellow Green Red White Cyan Magenta MSM7650 Black Blue 14/34 ...

Page 15

... NTSC Y signal output (setup Wave Form (NTSC) DAC data Lumi [IRE] 429 63 418 59 377 44 311 20 256 0 201 –20 Color Burst 135 –44 94 –59 83 –63 NTSC C signal output (setup: 0) White Cyan Magenta Yellow Green Red Yellow Green Red Cyan Magenta Blue MSM7650 Blue Black 15/34 ...

Page 16

... Semiconductor Composite Wave Form (PAL) DAC data Lumi [IRE] 488 133 397 100 367 89 315 70 285 59 235 41 205 30 181 21.5 153 11 122 0 63 –21.5 4 –43 Yellow Green White Cyan Magenta PAL composite signal MSM7650 Red Black Blue 16/34 ...

Page 17

... C Wave Form (PAL) DAC data Lumi [IRE] 429 63 418 59 377 44 315 21.5 256 0 197 –21.5 Color Burst 135 –44 94 –59 83 –63 White Cyan Magenta Yellow Green Red PAL Y signal output Yellow Green Red Cyan Magenta Blue PAL C signal output MSM7650 Blue Black 17/34 ...

Page 18

... Video data input timing In slave mode t (Ts) Operation mode STA 126 CCIR 601 NTSC 141 Square Pixel NTSC 115 4Fsc NTSC 134 CCIR PAL 154 Square Pixel PAL MSM7650 don't care ACT are as START t (Ts) STA 129 144 118 137 157 18/34 ...

Page 19

... Internal Synchronization Output Timing Input and output timing of HSYNC_L and VSYNC_L in master mode is as follows. CLKX1 HSYNC_L VSYNC_L Output timing of internal synchronization CLK1, HSYNC_L and VSYNC_L VSYNC_L YA 523 524 Output timing of internal synchronization VSYNC_L t d1 525 MSM7650 19/34 ...

Page 20

... POSITIVE HALF CYCLE Burst relative 180° to B-Y axis Burst relative 180° to B-Y axis MSM7650 20/34 ...

Page 21

... First equalizing pulse period (3H) B Vertical synchronization period (3H) C Second equalizing pulse period (3H) D Burst pause period E Vertical blanking period (20H) Output timing (interlaced NTSC) MSM7650 Period Odd field (Even field) 259.5 to 262. 6,259.5 to 262. 17,259.5 to 262.5H 21/34 ...

Page 22

... Period Continuous odd field 261 to 262H 261 to 6H 261 to 17H MSM7650 Continuous even field 261.5 to 262H 261 261.5 to 17.5H ...

Page 23

... Period Filed 1,5 Filed 2,6 311 to 312.5H 311 to 312. 2. 2. 6,310 to 312. 5.5,308.5 to 312. 22.5,311 to 312. 22.5,311 to 312.5H MSM7650 Filed 3,7 Filed 4,8 311 to 312.5H 311 to 312. ...

Page 24

... Period Continuous odd field 311 to 312H 1 to 2.5H 2 311 to 6H 311 to 22H MSM7650 Continuous even field 311.5 to 312H 1 to 2.5H 2 311 311.5 to 22.5H 24/34 ...

Page 25

... MSM7650 1/2H 31Ts 398Ts 64Ts 429Ts 32Ts 369Ts 63Ts 432Ts 28Ts 332Ts 58Ts 390Ts 33Ts 387Ts 68Ts 455Ts 35Ts 403Ts ...

Page 26

... MSM7650 Blue Black 661Ts 750Ts 858Ts 602Ts 682Ts 780Ts 701Ts 795Ts 910Ts 670Ts 757Ts 864Ts 731Ts 827Ts 944Ts ...

Page 27

... C-bus Interface Input/Output Timing Basic input/output timing C-bus interface is shown below. SDA MSB SCL Start Condition Data Line Stable: Data Valid Change of Data Allowed 2 I C-bus basic input/output timing ACK 3-8 t L.SCL t C.SCL MSM7650 9 P ACK Stop Condition 27/34 ...

Page 28

... The read/write attribute of a register does not match "X" (read/write control bit). The input timing is shown below. SDA SCL S Slave Address Start Condition A Data Subaddress1 A Description A Data ACK ACK 1 Sub Address MSM7650 A P ..... Data 1 Data ACK P Data Stop Condition 28/34 ...

Page 29

... Selects master/slave operation of sync signal generator. 0: slave mode *1: master mode Sampling ratio *0: 4:2:2 1: 4:1:1 Selects operation mode *000: CCIR 601 NTSC 13.5 MHz 001: NTSC Square Pixel 12.27 MHz 010: NTSC 4Fsc 14.32 MHz 100: CCIR 601 PAL 13.5 MHz 101: PAL Square Pixel 14.75 MHz MSM7650 29/34 ...

Page 30

... Luminance signal output level control of overlay signals and luminance order color bar for adjustment 00: 25% 01: 50% 10: 75% *11: 100% Data byte MR7 MR6 MR5 MR4 1 CR7 CR6 CR5 CR4 MSM7650 MR3 MR2 MR1 MR0 CR3 CR2 CR1 CR0 30/34 ...

Page 31

... Interpolation+LPF Frequency Characteristic LPF for 422 color signals The following characteristics are when the clock frequency is 13.5 MHz. 0 –20 –40 –60 –80 –100 0 1 422 Interpolation + LPF Frequency Characteristic Frequency [MHz Frequency [MHz] MSM7650 31/34 ...

Page 32

... Semiconductor Up Sampling Filter The following characteristics are when the clock frequency is 27 MHz. 0 –20 –40 –60 –80 –100 Sampling Filter Frequency Characteristic Frequency [MHz] MSM7650 12 14 32/34 ...

Page 33

... 3.3V 3.3V V REF FS COMP YA MSM7650 CVBSO CA X GND AGND CLKX2 +AVCC 0.1mF + 3.6mH – 75W 150W 560W 164pF 560W 0.1mF –AVCC MSM7650 External reference Typ. 1.25V voltage LPF AMP R1 LPF AMP R2 LPF AMP R2 1000pF + OUTPUT 33/34 ...

Page 34

... Semiconductor PACKAGE OUTLINES AND DIMENSIONS ^5 *0 INDEX MARK 0.8TYP. Mirror finished surface 0.17±0.05 25.0±0.2 20.0±0 0.8 0.12 SEATING PLANE 2.5TYP 10° 1.3TYP. 1.38±0.15 MSM7650 $ +0.08 0.32 0.16 –0.07 M 34/34 ...

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