LM1229VEC National Semiconductor, LM1229VEC Datasheet
LM1229VEC
Related parts for LM1229VEC
LM1229VEC Summary of contents
Page 1
... Contrast control for simultaneously adjusting the RGB output peak to peak levels. n Gain controls for aligning the CRT color temperature. © 2005 National Semiconductor Corporation n Color tracking brightness control for maintaining color temperature throughout the full range of adjustment. n Black level clamping to ensure output level stability. The polarity of the logic pulse input is register selectable ...
Page 2
... LM1229 Package and Pinout Non-Exposed DAP — NS Package Number VEC64A www.national.com Non-Exposed DAP — Order Number LM1229VEC Exposed DAP — Order Number LM1229YA Exposed DAP — NS Package Number VXE64A FIGURE 1. 2 20118701 ...
Page 3
... IN CC Video Inputs (pk-pk) Power Dissipation ( (Above 25˚C Derate Based on θ and Thermal Resistance LM1229VEC (θ Video Signal Electrical Characteristics Unless otherwise noted 25˚ (Note 7) for Min and Max parameters and (Note 6) for Typicals. Symbol Parameter I Supply current S I ...
Page 4
Video Signal Electrical Characteristics Unless otherwise noted 25˚ (Note 7) for Min and Max parameters and (Note 6) for Typicals. Symbol Parameter A / Maximum gain attenuation. V MIN GAIN A V MAX GAIN A Maximum ...
Page 5
OSD Electrical Characteristics Unless otherwise noted 25˚ Symbol Parameter BOTH MODES I Low input current (OSD and LOW Enable). I High input current (OSD and HIGH Enable). SEP Crosstalk from video 10 kHz SEP Crosstalk from ...
Page 6
Deflection Signal Characteristics Unless otherwise noted 25˚ eters and (Note 6) for Typicals. Symbol Parameter I HDRIVE Max sink current HDO V HDRIVE Max high level output HDOH voltage δ HDRIVE Duty cycle t Delay to ...
Page 7
System Interface Signal Characteristics Unless otherwise noted 25˚ for Min and Max parameters and (Note 6) for Typicals. Symbol Parameter I Logic low input current L (SCL, SDA, HSYNC, VSYNC) I Logic high input current H ...
Page 8
Note 13: Machine Model ESD test is covered by specification EIAJ IC-121-1981. A 200 pF cap is charged to the specific voltage, then discharged directly into the IC with no external series resistor (resistance of discharge path must be under ...
Page 9
LM1229 Test Circuit (Continued) FIGURE 2. LM1229 Test Circuit 9 20118702 www.national.com ...
Page 10
Application Information PIN CONNECTIONS Pin Pin Name No ALC 2 C OSC 3 VDRIVE OUT 4 VDRIVE REF 5 V Caps REF VEHT1 9 VEHT2 www.national.com Schematic C is the feedback loop filter ...
Page 11
Application Information Pin Pin Name No OUT 11 FOCUS OUT V & GND CC 14 HDRIVE OUT 15 SCL 16 SDA (Continued) Schematic EW pincushion, trapezoid and top and bottom corners. Its lowest voltage is in the middle ...
Page 12
Application Information Pin Pin Name No. 18 Horizontal Flyback 19 FREQ1 22 FREQ2 20 HEHT 21 REHT1 24 REHT2 25 FILTER2 28 FILTER1 www.national.com (Continued) Schematic The input is a threshold detector at approximately 2.4V limit the combined ...
Page 13
Application Information Pin Pin Name No. 31 HOSC2 32 HOSC1 34 XRAY 35 HSYNC 36 VSYNC 37 DAC 3 Output 38 DAC 2 Output 39 DAC 1 Output 40 VBLANK OUT (Continued) Schematic The oscillator can be a standard 12 ...
Page 14
Application Information Pin Pin Name No. 41 Green OSD 42 Red OSD 43 Blue OSD (Digital Mode) 41 Green OSD 42 Red OSD 43 Blue OSD (Analog Mode) 44 OSD Enable 45 Green Video In 46 Red Video In 47 ...
Page 15
Application Information Pin Pin Name No. 51 ABL REF EXT 57 Blue Output 58 Red Output 59 Green Output 62 Vertical Flyback (Continued) Schematic The Automatic Beam Limiter input is biased to the desired beam current limit ...
Page 16
Application Information BLANKING The pin 18 horizontal flyback input switches at about 2.4V based on an internal reference. A large amplitude input pulse is more desireable since it reduces the rise time at pin 18. The component values shown in ...
Page 17
... OSD at the video outputs. This is still gated by the OSD Enable input level. See Tables 2, 3 for details. National Semiconductor does not recommend using the OSD inputs with both analog and digital sources in the same design. When configured for analog, the OSD inputs are vulnerable to digital logic levels and damage could occur to the LM1229 unless 100Ω ...
Page 18
Tables These are the tables which are referenced in the text. TRANS ENABLE 0 0 Normal video display Foreground and background determined by OSD inputs Normal video display Foreground and background determined by OSD ...
Page 19
... LM1229 for writing is 0xBA (10111010b) and the address for reading is 0xBB (10111011b). The develop- ment software provided by National Semiconductor will au- tomatically take care of the difference between the read and write addresses if the target address under the communica- tions tab is set to 0xBA ...
Page 20
Microcontroller Interface conductor may use some additional addresses for produc- tion testing. Writing to an address outside the ranges shown here could have unpredictable or even destructive results. Note the address gap between the RGB and deflection control registers. This ...
Page 21
Application Register Detail GREEN Gain Control Register Addr Bit 7 GREEN GAIN 0x01 X Bits 6–0: Sets the gain level of the green video channel. A value of 0x7F generates the maximum green gain. A value of 0x00 generates the ...
Page 22
Application Register Detail (0V–2.1V). Bit 4: When set to 0, vertical blanking of the RGB outputs is disabled. When set to 1, vertical blanking is enabled. Bit 3: When set to 0, the LM1229 clamps the input video when the ...
Page 23
Application Register Detail HORIZONTAL EHT CORRECTION Register Addr Bit 7 HEHT 0x42 EQPRM Bit 7: When this bit attempt is made to remove HSYNC equalizing pulses. When set HSYNC equalizing pulses are removed. ...
Page 24
Application Register Detail Bits 7–0: Sets the DC level of the vertical ramp that is used to move the picture up and down typical application, a setting of 0xFF will move the raster image to the lowest position ...
Page 25
Application Register Detail VERTICAL BLANKING OUTPUT Register Addr Bit 7 VBLANK 0x51 X Bits 6–0: These bits determine the duration of the vertical blanking output in horizontal lines, as counted by the horizontal sync input. (Continued) Bit 6 Bit 5 ...
Page 26
... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Order Number LM1229VEC NS Package Number VEC64A Order Number LM1229YA NS Package Number VXE64A 26 ...
Page 27
... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...