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I2040BF-08-SR bảng dữ liệu(PDF) 3 Page - PulseCore Semiconductor |
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I2040BF-08-SR bảng dữ liệu(HTML) 3 Page - PulseCore Semiconductor |
3 / 8 page November 2006 P2040B rev 0.2 LCD Panel EMI Reduction IC 3 of 8 Notice: The information in this document is subject to change without notice. P2040B CLKIN CP0 SR0 SSON# CP1 VSS ModOUT 1 2 3 4 5 6 7 8 VDD +3.3V Digital control for SS enable or disable 0.1 µF Modulation 65MHz signal with +/- 1.56% Deviation and Modulation Rate of 101.54 KHz. This signal is connected back to the Spread Spectrum input Pin (SSIN) of the Graphics Accelerator. 65MHz from Graphics Spread Spectrum Selection Table 1 illustrates the possible spread spectrum options. The optimal setting should minimize system EMI to the fullest without affecting system performance. The spreading is described as a percentage deviation of the center frequency (Note: the center frequency is the frequency of the external reference input on CLKIN, Pin 1). Example: P2040B is designed for high resolution flat panel applications and is able to support panel frequencies from 30MHz to 100MHz. For a 65MHz pixel clock frequency, a spreading selection of CP0 = 0,CP1=1 and SR0=1 gives a percentage deviation of +/-1.56% (see Table 1). This results in frequency on ModOUT being swept from 64.5MHz to 65.5MHz. This particular example given here is a common EMI reduction method for notebook LCD panel and has already been implemented by most of the leading OEM and mobile graphic accelerator manufacturers. Application Schematic for Mobile LCD Graphics Controllers Absolute Maximum Ratings Symbol Parameter Rating Unit VDD, VIN Voltage on any pin with respect to Ground -0.5 to +4.6 V TSTG Storage temperature -65 to +125 °C TA Operating temperature -40 to +85 °C Ts Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C TDV Static Discharge Voltage (As per JEDEC STD22- A114-B) 2 KV Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. |
Số phần tương tự - I2040BF-08-SR |
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Mô tả tương tự - I2040BF-08-SR |
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