STV5730A STMicroelectronics, STV5730A Datasheet
STV5730A
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STV5730A Summary of contents
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... SUITABLE FOR S-VHS THREE DIFFERENT MARKERS CAN BE . GENERATED SIMULTANEOUSLY THREE WIRE SERIAL INTERFACE FOR MI- CROPROCESSOR CONTROL DESCRIPTION The STV5730A IC is intended to be used in VCR, Satellite receiver and PAY-TV systems for CVBS or R/G/B text/graphics insertion. February 1996 STV5730A SO28 (Plastic Micropackage) ORDER CODE : STV5730A ...
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... YIN input for minimum cost applications. 2 VIDEO IN Analog Input This is the CVBS input. An external capacitor is needed for clamp operation. The STV5730A extracts the sync from this signal when the C7 control bit is set. 3 RES Analog Pin it must be tied to an external resistor to control the PLL f0 frequency. ...
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... INSERTION H AND V ASCII CHARACTER SCANNING RAM ROM RAM ADDRESS GENERATOR LUMA & SYNC GENERATION VIDEO BIAS LEVEL DETECTOR GENERATION 13 10 CSN MUTE Parameter Parameter Typ. STV5730A VIDEO 27 OUT1 GAIN VIDEO 26 OUT2 DISABLE XTAL 8 IN XTAL 9 OUT PAL/NTSC COUT ENCODER & 24 SATURATION ...
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... STV5730A ELECTRICAL CHARACTERISTICS (T Symbol Parameter DV Digital Supply Voltage Digital Supply Current DD AV Analog Supply Voltage DD AI Analog Supply Current DD AV -DV Analog to Digital Supply Voltage Difference Digital Output Voltage High Level ( Digital Output Voltage Low Level ( Digital Input Voltage High Level IH DV ...
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... CSLCLL CSN Min. 1.0 1.0 1.1 250 100 450 200 200 maxHZ maxHZ 100 100 100 100 100 100 CLHCSH CWL CWH t CSWL STV5730A Typ. Max. Unit 3.0 V 3.0 V 0.95 V 1.25 1.4 V 1.4 V 1.9 V 300 350 mV 150 200 mV 515 580 mV 320 mV ...
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... STV5730A TYPICAL PAL/NTSC/SECAM APPLICATION 180 Notes : 1. Optional filter. For low cost applications, short circuit. 2. The 4fsc (17.734MHz PAL, 14.318MHz NTSC) crystal may be ommited if this signal is already available in a system. 3. External bias level can be set by resistor ratio as required. The level at pins LECHAR and LESCREEN must not exceed 3.0 Vdc. ...
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... FUNCTIONAL DESCRIPTION The STV5730A operates in ”mixed mode” or ”full page mode” Mixed mode : the device is line locked to the incoming CVBS signal. The text is superimposed over the CVBS input eitherin B&W or translucent. It may also be superimposed in color by using the R/G/B outputs. - Full page mode : the device generates a colored PAL or NTSC CVBS output and simultaneous R/G/B outputs. Both ” ...
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... STV5730A FUNCTIONAL DESCRIPTION (continued) 1.3 - Row Attributes There are 11 row attributes, numbered from 0 to 10. They may be written one by one or sequentially. The row attribute format is as follows : 11 8 HPOS OFFSET VPOS OFFSET : the MSB is the sign bit (0 : positive negative). If the offset is positive (from 0 to +17), then the corresponding number of lines are added on top of the row (i ...
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... external input composite sync is taken from the CSYNC pin the sync is extracted by the STV5730A.The currently active sync is output on the CSYNC pin the standard is NTSC, 60Hz the standard is PAL or SECAM with 50Hz character color encoding is disabled character color encoding is enabled ...
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... STV5730A FUNCTIONAL DESCRIPTION (continued) 1.4.4 - Position Register 11 VERTICAL POSITION HORIZONTAL POSITION Any value from VERTICAL POSITION Any value from 1.4.5 - Mode Register M11 M10 the BAR pin is disabled the BAR pin has an action on the line PLL the missing sync pulses are not detected ...
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... The STV5730A is down loaded by the microprocessor through a three wire serial interface : DATA, CLK, CSN. The CLK and CSN signals are internally ORed in order to validate the transfer when the STV5730A is chip selected only (i.e. CSN = 0). The CSN rising edge validates the internal data transfer. ...
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... STV5730A FUNCTIONAL DESCRIPTION (continued) Figure DATA CLK CSN 7 6 DATA CLK CSN DATA CLK CSN 2.2 - The Write Pointer As described in the ”message format” paragraph, an address consists of three fields : STRU[7:6], BUF[11:8], DEPL[4:0]. The STRU[7:6] field indicates whether PAGE address or a ROW ATTRIBUTE / REGISTER ad- dress ...
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... Mixed Mode Behavior In mixed mode, the internal PLL is line locked to the incoming CVBS signal. The sync is either extracted by the STV5730A (if C7 control bit is set) or pro- vided by the application in a composite form on the CSYNC pin (if C7 control bit is cleared). The STV5730A separates the vertical sync from the composite synchronism ...
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... The final luma amplitude should not be greater than the peak white level. These levels may be static or dynamic. Dynamic levels can be easily generated by analog sum of the R/G/B and CO STV5730A outputs (a few resistors are necessary) to give grey scale character shading in the mixed mode useful to control the character foreground luma level ...
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... VIDEO FULL PAGE MODE In addition to the normal full page mode in which a uniformely colored screen background is gener- ated, the STV5730A is able to perform a ”video full page mode”. Normal and video full page mode are selected by the control bit C11 (respectively set high and low). ...
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... STV5730A FUNCTIONAL DESCRIPTION (continued THE CVBS OUTPUT PICTURE The following tables show the picture design in CVBS output mode (VIDEOout1 analog output pin) according Blink on/off (BK character attribute & C[6:5] control bits) - Character background on/off (BE character attribute & C1 control bit) - Character border on/off (FBE row attribute) 11 ...
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... CSCREEN is defined by the color register. CBACKG and CBORD are identical to CCHAR and thus are character attributes recommended to use CO output signal in this case. An R/G/B external switch must be controlled by the STV5730AFB output to perform the character insertion. C0 may be used as an additional character intensity signal. ...
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... STV5730A FUNCTIONAL DESCRIPTION (continued STANDARD CHARACTERS The default device is delivered with a standard set of ROM based characters (see Figure 6). The user can redefine the total character set (except for the character 00H (zero)). Figure 6 00H 01H 02H 08H 0AH 09H 10H 11H ...
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... STV5730A 47 H 4FH 57H 5FH 67H 6FH 77H 7FH 19/20 ...
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... STV5730A PACKAGE MECHANICAL DATA 28 PINS - PLASTIC MICROPACKAGE Millimeters Dimensions Min. Typ 0.1 b 0. 1.27 e3 16.51 F 7.4 L 0.4 S Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use ...