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LT8918_Datasheet_R1.3.pdf

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    Lontium Semiconductor LT8918_Datasheet_R1.3 LONTIUM SEMICONDUCTOR CORPORATION ClearedEdge Technology LT8918 MIPI DSI/CSI-2 Transmitter Datasheet We produce mixed-signal products for a better digital world! Confidential 1
    Lontium Semiconductor LT8918_Datashet_R1.3 TABLE OF CONTENTS 1. REVISION HISTORY ............................................................................................................. 3  2. GENERAL DESCRIPTION .................................................................................................... 4  2.1 APPLICATION .................................................................................................................................................................... 4  2.2 FEATURES ......................................................................................................................................................................... 5  2.3 FUNCTIONAL DIAGRAM ..................................................................................................................................................... 5  3. PINNING INFORMATION ...................................................................................................... 6  3.1 QFN64 PIN DIAGRAM ...................................................................................................................................................... 6  3.2 QFN64 PIN DEFINITION .................................................................................................................................................... 7  3.3 BGA81 BALL MAP ......................................................................................................................................................... 11  3.4 BGA81 BALL DEFINITION .............................................................................................................................................. 12  4. ELECTRICAL CHARACTERISTICS ................................................................................... 15  4.1 ABSOLUTE MAXIMUM CONDITIONS ................................................................................................................................ 15  4.2 NORMAL OPERATING CONDITIONS ................................................................................................................................ 15  4.3 DC CHARACTERISTICS ................................................................................................................................................... 15  4.4 AC CHARACTERISTICS ................................................................................................................................................... 15  5. PACKAGE INFORMATION ................................................................................................. 17  5.1 QFN64 7.5MM X 7.5MM PACKAGE ................................................................................................................................ 17  5.2 BGA81 5MM X 5MM PACKAGE ...................................................................................................................................... 18  Confidential 2
    Lontium Semiconductor 1. REVISION HISTORY LT8918_Datashet_R1.3 Version R1.0 Owner C.Tao R1.1 R1.2 R1.3 C.Tao C.Tao N.Wang Content Initial Release 1. Update QFN64 7.5mm x 7.5mm EPAD size from 5.6x5.6 to 6.2x6.2 2. Add BGA81 5mm x 5mm ball map, ball definition and package information 3. Remove CSI-2 YUV 422 10bit and RAW8 video format support 4. Add CCI module in block diagram 1. Update pin information Change package information Date 2016/06/14 2016/06/15 2016/08/16 2016/8/18 Confidential 3
    Lontium Semiconductor LT8918_Datashet_R1.3 2. GENERAL DESCRIPTION The Lontium LT8918 is a high performance MIPIDSI/CSI-2 transmitter for mobile display panel or camera application. The TTL input of LT8918 supports both 24-bit RGB and BT656/1120 video format under either SDR or DDR sampling. The maximum input pixel clock frequency is SDR 148.5MHz or DDR 74.25MHz for 1080P@60Hz high-end mobile display or video capture application. For MIPI DSI/CSI-2 output, LT8918 features a single port MIPI DSI or CSI-2 transmitter with 1 high-speed clock lane and 1~4 configurable high-speed data lanes operating at maximum 1.5Gb/s/lane, which can support a total bandwidth of up to 6Gb/s. LT8918 supports both Non-Burst and Burst DSI video data transferring, as well as Command Mode through Lane-0. The LT8918 is fabricated in advanced CMOS process and implemented in a small outline 7.5mm x 7.5mm QFN64 package. This package is RoHS compliant and specified to operate from -40°C to +85°C. 2.1 Application  Mobile systems  Cellular handsets  Digital video cameras  Digital still cameras   Car Display and Camera System Tablet PC, Notebook PC Fig2.1 Typical Application and System Diagrams Confidential 4
    Lontium Semiconductor 2.2 Features  RGB Input  Support 24-bit RGB and BT656/BT1120 Input  Support both SDR and DDR Data Sampling  Programmable Rising/Falling Edge Clock Input  Support up to 74.25MHz DDR or 148.5MHz SDR Clock Input  Support both 1.8V and 3.3V Input Voltage Level  Single-Port MIPI DSI Transmitter  Compliant with DCS1.02, D-PHY1.1 & DSI1.02  1 Clock Lane and 1~4 Configurable Data Lanes  80Mb/s~1.5Gb/s per Data Lane  Resolution Up to 1080P 60Hz  Data Lane and Polarity Swapping  Both Non-Burst and Burst Video Mode Supported  Command Mode through Lane-0 Supported  Support RGB666, Loosely RGB666, RGB888, RGB565, 16-bit YCbCr4:2:2, 24-bit YCbCr 4:2:2 Video Format 2.3 Functional Diagram LT8918_Datashet_R1.3  Single-Port MIPI CSI-2 Transmitter  Compliant with D-PHY1.1 & CSI-2 1.0  1 Clock Lane and 1~4 Configurable Data Lanes  80Mb/s~1.5Gb/s per Data Lane  Resolution Up to 1080P 60Hz  Data Lane and Polarity Swapping  Support RGB565, RGB666, RGB888, 8-bit YUV422 Video Format  Miscellaneous  1.8V Single Supply Power  Support 100KHz and 400KHz I2C slave  Support SPI slave  External 25MHz Crystal Reference Clock  Temperature Range: -400C ~ +850C  Packaged in QFN64 7.5mm x 7.5mm and BGA81 5mm x 5mm Fig2.2 MIPI DSI/CSI-2 Transmitter Functional Diagrams Confidential 5
    LT8918_Datashet_R1.3 Lontium Semiconductor 3. PINNING INFORMATION To improve signal integrity, all differential pairs should be routed with 100Ω±10% differential impedance. Maximum trace length mismatch should be less than 5mil and keep total trace length to a minimum for all differential traces. Routing differential pairs on the top or bottom layer with no vias as on signal path is highly recommended. For crystal oscillator, keep XTALI/XTALO as short as possible and away from noisy signal source. Minimize parasitic capacitances on these two pins and shield them with clean ground lines. To minimize the power supply noise floor, at least one 0.1μF and one 0.01μF decoupling capacitor is recommended to be installed near all the LT8918 1.8V power pins. To avoid large current loops and trace inductance, the trace length between decoupling capacitor and device power inputs pins must be minimized. 3.1 QFN64 Pin Diagram Fig3.1 LT8918 QFN64 Pin Map (Top View) Confidential 6
    Lontium Semiconductor 3.2 QFN64 Pin Definition LT8918_Datashet_R1.3 Pin No. Pin Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 DE D0 D1 VCC18R D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 VCC18R D14 D15 D16 D17 D18 Pin Description TTL Data Active Input 1.8V/3.3V GPI input with internal 100K pull-down resistor. TTL Data Input Bit-0 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-1 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. Analog 1.8V Power 1.8V power for LVDS Receiver Port-1 TTL Data Input Bit-2 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-3 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-4 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-5 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-6 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-7 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-8 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-9 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-10 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-11 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-12 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-13 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. Analog 1.8V Power 1.8V power for RXPLL TTL Data Input Bit-14 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-15 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-16 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-17 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-18 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. Confidential 7
    Lontium Semiconductor LT8918_Datashet_R1.3 Pin No. Pin Name Pin Description 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 D19 D20 D21 D22 D23 VCC18R R6K IRQO XTALI XTALO VCC18T MT0P MT0N MT1P MT1N MTCP MTCN MT2P MT2N MT3P MT3N TTL Data Input Bit-19 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-20 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-21 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-22 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. TTL Data Input Bit-23 1.8V/3.3V TTL data GPI input with internal 100K pull-down resistor. Analog 1.8V Power 1.8V power for LVDS Receiver Port-2 and Bandgap BandGap External Resistor External 6K resistor for setting internal reference current. Interrupt Request Output In default, this pin is configured as interrupt request (IRQ) output. Analog Test Signal Output When this pin is configured as Hi-Z, it serves as analog test signal output. Crystal Clock Input A crystal oscillator should be attached between this pin and XTALO. However, a CMOS 1.8V compatible clock signal can also be connected to this pin as reference clock of LT8918 Crystal Clock Output A crystal oscillator should be attached between this pin and XTALI. If XTALI is used as reference clock input, this pin must be floating. Analog 1.8V Power 1.8V power for MIPI Transmitter MIPI Data Lane-0 Positive Output MIPITX Positive output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-0 Negative Output MIPITX Negative output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-1 Positive Output MIPITX Positive output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-1 Negative Output MIPITX Negative output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-C Positive Output MIPITX Positive output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-C Negative Output MIPITX Negative output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-2 Positive Output MIPITX Positive output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-2 Negative Output MIPITX Negative output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-3 Positive Output MIPITX Positive output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. MIPI Data Lane-3 Negative Output MIPITX Negative output of Bi-directional polarity swappable differential pairs up to 2.5Gb/s. Confidential 8
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