STV6886 SGS-Thomson-Microelectronics, STV6886 Datasheet

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... Focus Amplitude, Horizontal Focus Symmetry, Vertical Focus Amplitude) April 2000 FOR MULTISYNC MONITOR DESCRIPTION The STV6886 is a monolithic integrated circuit as- sembled in a 32-pin shrink dual-in-line plastic package. This IC controls all the functions related to horizontal and vertical deflection in multimode or multi-frequency computer display monitors. ...

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PIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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... X-RAY protection input (with internal latch) 26 HOUT Horizontal Drive Output (NPN open collector) 27 GND General Ground 28 BOUT B+ PWM Regulator Output (NPN open collector) Supply Voltage(12V typ) (referenced to Pin 27 SCL I C Clock Input 2 31 SDA I C Data Input Supply Voltage STV6886 Function 3/43 ...

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... STV6886 QUICK REFERENCE DATA Any polarity on H Sync & V Sync inputs TTL or composite Syncs Sync on Green Horizontal Frequency Horizontal Autosync Range (for given R0 and C0. Can be easily increased by application) Control of free-running frequency Frequency Generator for Burn-in 2 Control of H-Position through Control for H-Duty Cycle through I ...

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... Vertical Keyst. Oscillator 7 bits x VerticalMoire VPOS Cancel 7bits 7bits+ON/OFF VSYNC VBREATH V AGCCAP OUT 26 11 HGND 19 VGND 17 GND 29 VCC 25 XRAY +OUT 28 16 ISENSE 14 COMP 15 REGIN 5V Internal reference (7bits) 10 FOCUS HFOCUS- CAP EWOUT 24 HSize DC 7 bits STV6886 ...

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... STV6886 ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage (Pin 29 Supply Voltage (Pin 32) DD Max Voltage on Pin 4 Pin 9 Pin 5 V Pins 14, 15, 16, 20 Pins 3, 10, 18, 23, 24, 25, 26, 28 Pins 1, 2 Pins 30, 31 ESD susceptibility VESD through 1.5k T Storage Temperature stg T Junction Temperature ...

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... Pins 30 12V amb Test Conditions Pin 1 Pin 1 Pin 1 Pin 2 Pin 2 Pin 1 = 12V amb CC Test Conditions High Level Low Level Pins 820pF STV6886 Min. Typ. Max. Units 400 kHz 1.3 s 0.6 s 2 Min. Typ. Max. Units ...

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... STV6886 HORIZONTAL SECTION Operating Conditions Symbol Parameter VCO I Max Current from Pin 6 0max F(max.) Maximum Oscillator Frequency OUTPUT SECTION I12m Maximum Input Peak Current Horizontal Drive Output Maximum Cur- HOI rent Electrical Characteristics (V = 12V Symbol Parameter 1st PLL SECTION Delay Time for detecting polarity ...

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... OFF when the output transistor is OFF. 10 Initial Condition for Safe Start Up. Test Conditions Min. 0.65 At 31.4kHz Sub-Address 00 Byte x1111111 (10) Byte x0000000 Pin 25, (see fig. 14) 7.6 Low Level High Level < CC Pin 29 Pin 26 30mA OUT STV6886 Typ. Max. Units 0. ppm 8.2 8.8 V 1.6 V 4 ...

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... STV6886 VERTICAL SECTION Operating Conditions Symbol Parameter Minimum Load for less than 1% Vertical R LOAD Amplitude Drift Electrical Characteristics (V = 12V Symbol Parameter VRB Voltage at Ramp Bottom Point VRT Voltage at Ramp Top Point (with Sync) Voltage at Ramp Top Point (without VRTF Sync) ...

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... Subaddress 04 x1111111 (decimal 127) x0000000 (decimal 0) Sub-Address 0F Min Byte x0000000 Typ Byte x1000000 Max Byte x1111111 Sub-Address 05 Byte x0000000 Byte x1000000 Byte x1111111 Sub-Address 06 Byte x0000000 Byte x1111111 STV6886 Min. Typ. Max. Units 2.2 V 4.9 V 400 2.1 V 200 ppm ...

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... STV6886 GEOMETRY CONTROL SECTION Electrical Characteristics (V = 12V Symbol Parameter SYMMETRIC CONTROL THROUGH E/W OUTPUT (see Figure 2 on page 15 and Figure 4 on page 15) VEWM Maximum E/W Output Voltage VEWm Minimum E/W Output Voltage For control of Horizontal size. DC Output Voltage with: EW -E/W Corner inhibited DC -Keystone inhibited ...

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... C) amb Test Conditions Pin 4.7k MOIRE sub-address 02 Byte 00000000 Byte 01000000 Byte 01111111 R = 4.7k MOIRE Sub-address 02 Byte 10000000 Byte 11000000 Byte 11111111 Sub-address II: 0xxx xxxx 1xxx xxxx Sub-address 0C Byte 11111111 STV6886 Min. Typ. Max. Units + ...

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... STV6886 B+ SECTION Operating Conditions Symbol Parameter FeedRes Minimum Feedback Resistor Electrical Characteristics (V = 12V Symbol Parameter OLG Error Amplifier Open Loop Gain UGBW Unity Gain Bandwidth IRI Feedback Input Bias Current EAOI Error Amplifier Output Current CSG Current Sense Input Voltage Gain ...

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... Figure 1. Vertical Dynamic Focus Function Figure 2. E/W Output Figure 3. Dynamic Horizontal Phase Control Figure 4. Keystone Effect on E/W Output (PCC Inhibited) STV6886 15/43 ...

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... STV6886 TYPICAL OUTPUT WAVEFORMS Sub Function Pin Address 10000000 Vertical Size 05 23 11111111 00000000 Vertical 01000000 Position Control 01111111 0xxxxxxx: Vertical Linearity 11111111 16/43 Byte Specification V OUTDC 2.15V V OUTDC 3. 3.2V OUTDC V = 3.6V OUTDC V = 4.0V OUTDC Inhibited 3. Effect on Screen ...

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... Linearity 11111111 x1111111 Horizontal 11 24 Size x0000000 Horizontal Dynamic Focus with X000 0000 — Amplitude X111 1111 --- Horizontal Dynamic X000 0000 — Focus with X111 1111 --- Symmetry Byte Specification =- =+ 4.2V 2V STV6886 Effect on Screen 17/43 ...

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... STV6886 Sub Function Pin Address 10000000 Keystone (Trapezoid Control 11111111 10000000 E/W (Pin 0A 24 Cushion) Control 11111111 11111111 Corner 10 24 Control 10000000 Inhibited) Parallel- 10000000 ogram 0E Control 11111111 18/43 Byte Specification (E/W + Corner Inhibited) 0. (Keystone + Corner Inhibited 1. (Keystone+ E/W Inhibited) 1.25V ...

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... Sub Function Pin Address (Parallelogram Inhibited) Side Pin 10000000 Balance 0D Control 11111111 X111 1111 Vertical Dynamic 0F 10 Focus with Horizontal X000 0000 Byte Specification 2. STV6886 Effect on Screen H 0V 19/43 ...

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... STV6886 BUS ADDRESS TABLE Slave Address (8C): Write Mode Sub Address Definition ...

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... S Correction [0] [0] [0] C Correction [0] [0] [0] E/W Keystone [0] [0] [0] E/W Amplitude [0] [0] [ Reference Adjustment [0] [0] [0] Vertical Moiré Amplitude [0] [0] [0] Side Pin Balance [0] [0] [0] Parallelogram [0] [0] [0] STV6886 [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0] ...

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... STV6886 D8 D7 Eq. Pulse 0F 1, ignore T /2 [1] H [0], accept all Corner Sel [1] [0], off H. Moiré suited Combined [1] [0] Separate scanning/EHT READ MODE Hlock Vlock Xray [1], no [1], no [0], off [x] at Power-on Reset value Data is transferred with vertical sawtooth retrace. ...

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... SCL). 2 See I C Bus Address Table. 1.5 Sync Processor The internal sync processor allows the STV6886 to accept: – separated horizontal & vertical TTL-compatible sync signal – composite horizontal & vertical TTL-compatible sync signal 1 ...

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... STV6886 In order to choose the right sync priority the MCU 2 may proceed as follows (see I C Bus Address Ta- ble): – refresh the status register, – wait at least for 20ms (Max. vertical period), – read the status register. Sync priority choice should be : Sync Vextd ...

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... Figure 8 on page 25). Lock/Unlock Extracted Status VSync LOCKDET INHIBITION High CHARGE COMP1 PUMP Low HPOSITION PHASE ADJUST 6. 1.6V STV6886 PLL1F 7 10nF PLL1F PLL VCO OSC HPOS Adj. RS FLIP FLOP 0 0.875 T H 25/43 ...

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... VCO and an internal DC voltage Vb adjustable between 2.9 V and 4.2 V (cor- responding (see Figure 10). The STV6886 also includes a Lock/Unlock identifi- cation block which senses in real time whether PLL1 is locked or not on the incoming horizontal sync signal. This information is available through 2 ...

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... V switch-off page 28). 2.6 Horizontal and Vertical Dynamic Focus For dynamic focus adjustment, the STV6886 deliv- ers the sum of two signals on pin 10: – a parabolic waveform at horizontal frequency, – a parabolic waveform at vertical frequency. The horizontal parabola comes from a sawtooth in phase advance with flyback pulse middle. The phase advance versus horizontal flyback middle is kept constant versus frequency (about 1 s) ...

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... STV6886 Figure 14. Safety Functions Block Diagram Figure 15. Phase of HFocus Parabola Flyback pulse H Focus sawtooth H Focus parabola 28/ 0.4 s 0.6 s 0.6 s 0.475T H 0.16T 0.16T H H 127 Code (decimal ...

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... This function is intended to cancel the fringes which appear when the line to line interval is very close to the CRT vertical pitch. The amplitude of the modulation is controlled by register VMOIRE on sub-address 0C and can be switched-off via the control bit D8. STV6886 2 C regis OUT 400mV. ...

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... REF-V ly centered on 3.6V. By changing the vertical posi- tion, the sawtooth shifts by 0.4V. To provide good screen geometry for any end- user adjustment, the STV6886 has the “geometry tracking” feature which automatically adapts the parabola shape, depending on the vertical position and size. ...

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... H-position, moving the HFLY position on the horizontal sawtooth in the range of both for side pin balance and parallelogram adjustable by the keystone adjustable by the E/W amplitude adjustable by the E/W corner I STV6886 2 C select bit. to ground). Be register. ...

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... STV6886 3.7 Dynamic Horizontal Phase Control OUT OUT DCMID OUT K4 is adjustable by the parallelogram adjustable by the side pin balance I ter. 4 DC/DC CONVERTER PART This unit controls the switch-mode DC/DC con- verter. It converts a DC constant voltage into the B+ voltage (roughly proportional to the horizontal frequency) necessary for the horizontal scanning ...

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... Figure 18. DC/DC Converter (represented: Step-Up configuration) DAC 7bits Horizontal Dynamic Focus Sawtooth I adjust 8. 20 1.3V I REGIN COMP 22k EHV 10nF Feedback V B+ HDF Discharge 400ns + 1/3 down 1. Command step-up/down SENSE 16 STV6886 12V BOUT down Inhibit. STV6886 33/43 ...

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... STV6886 INTERNAL SCHEMATICS Figure 19. 5V Pins 1-2 200 H/HVIN VSYNCIN Figure 20. 12V HMOIRE/HLOCK 3 Figure 21. 12V HREF PLL2 4 34/43 Figure 22. 12V HREF Figure 23. 12V 6 R0 Figure 24 PLL1F HREF HREF 13 13 ...

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... Figure 25. HREF 12V 8 HPOSITION Figure 26. HREF 13 12V HFOCUS 9 CAP Figure 27. 12V 12V HFOCUS 10 Figure 28. 12V HFLY 12 Figure 29. COMP 14 Figure 30. 12V REGIN 15 STV6886 HREF 13 35/43 ...

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... STV6886 Figure 31. 12V I 16 SENSE Figure 32. 12V BREATH 18 Figure 33. 12V 20 VAGCCAP 36/43 Figure 34. 12V 22 VCAP Figure 35. 12V VOUT 23 Figure 36. 12V EWOUT 24 ...

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... Figure 37. 12V XRAY 25 Figure 38. V12 HOUT-BOUT Pins 26-28 Figure 39. Pins 30-31 SDA-SCL STV6886 37/43 ...

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... EHT COMP R76 P1 R77 C6 0 10k 47k 15k 10 0nF 38/43 J16 J15 J14 C39 +5V IC4 22pF +5V L1 STV6886 R39 R29 R42 22 H 4.7k 4.7k 100 C40 32 1 H/ 22pF C32 100nF SCL VSYN CIN SDA ...

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... Figure 41. STV6886 39/43 ...

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... STV6886 Figure 42. 40/43 ...

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... PACKAGE MECHANICAL DATA STV6886 41/43 ...

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... STV6886 PACKAGE MECHANICAL DATA 32 PINS - PLASTIC SHRINK Millimeters Dimensions Min. A 3.556 A1 0.508 A2 3.048 B 0.356 B1 0.762 C .203 D 27.43 E 9.906 E1 7.620 2.540 42/43 Stand-off Typ. Max. Min. 3.759 5.080 0.140 0.020 3.556 4.572 0.120 0.457 0.584 0.014 1.016 1.397 ...

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... Australia - Brazil - China - FInland - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. supersedes and replaces all information 2 C system, is granted provided that the system conforms to the I http://www .st.com STV6886 previously supplied Patent 43/43 ...