RD1-4020

RD1-4020 DisplayPort to DVI output User Guide Rev. B MegaChips’ Proprietary and Confidential This information shall not be shared or distributed outside the company and will be exchanged based on the signed proprietary information exchange agreement. MegaChips reserves the right to make any change herein at any time without prior notice. MegaChips does not assume any responsibility or liability arising out of application or use of any product or service described herein except as explicitly agreed upon. MegaChips’ Proprietary Information – Strictly Confidential Page 1 of 16 RD1-4020 Contents 1. Purpose and scope .................................................................................................................................... 4 2. Description.................................................................................................................................................. 4 3. Set up instructions ...................................................................................................................................... 4 4. 5. 3.1. I2C host port........................................................................................................................................ 5 3.2. In-System Programming (ISP) ............................................................................................................ 5 Diagnosis .................................................................................................................................................... 6 4.1. Board description ................................................................................................................................ 7 4.2. Principal components and functions ................................................................................................... 9 4.3. Connector descriptions ..................................................................................................................... 10 4.4. Switches ............................................................................................................................................ 14 4.5. Stuffing options ................................................................................................................................. 14 4.5.1. Single/dual TTL .......................................................................................................................... 14 4.5.2. IROM/SPI-Flash ......................................................................................................................... 14 Revision history ........................................................................................................................................ 15 B0546-GUD-01 MegaChips’ Proprietary Information – Strictly Confidential Page 2 of 16 RD1-4020 List of tables Table 1. Principal components and functions................................................................................................ 9 Table 2. Document revision history ............................................................................................................. 15 List of figures Figure 1. Connection set up ........................................................................................................................ 5 Figure 2. Block diagram .............................................................................. Error! Bookmark not defined. Figure 3. Board picture................................................................................ Error! Bookmark not defined. B0546-GUD-01 MegaChips’ Proprietary Information – Strictly Confidential Page 3 of 16 RD1-4020 1. Purpose and scope This document provides description and setup instructions for the DisplayPort® Receiver STDP4020 reference design board [RD1-4020_400-530] targeted for DP to DVI conversion applications. 2. Description The STDP4020 is an integrated circuit featuring a four lane DisplayPort receiver, quad LVDS & LVTTL transmitter with I2S and SPDIF audio outputs for digital audio-video conversion application. This device also includes SPI interface, I2C Slave (Host Interface), I2C Master Interface, UART (GProbe) interface, and general-purpose IO pins. The RD1-4020 is a low cost compact four layer board that includes necessary interfaces and features to fully demonstrate the STDP4020 receiver functionalities. The RD1-4020 board includes discrete TMDS transmitter chips, converting LVTTL output from STDP4020 into DVI. This board is capable of handling both single link and dual link DVI output supporting video resolution from 640 x 480 up to 2560 x 1600. The RD1-4020 also features digital audio outputs SPIDIF and I2S up to 8 Ch. This reference design meets the following objectives: 1. Stand-alone operation: Includes the necessary firmware (either IROM or external SPI) to work independently; this means the intended functionalities are performed without depending on external (Host) controllers. 2. Slave configuration: Provision to configure the device by an external Host controller through the Host Interface to I2C (most likely when no SPI Flash is used). 3. Set up instructions The picture below [Figure 1] is a connection diagram showing the RD1-4020 board used for transferring a PC DisplayPort signal into a dual link DVI output. Software utility: GProbe tool (ver 5.7.X.X), WinI2C tool B0546-GUD-01 MegaChips’ Proprietary Information – Strictly Confidential Page 4 of 16 RD1-4020 Figure 1. Connection diagram: PC DP signal to dual link DVI output This board uses the standard DisplayPort connector recommended in the DP specification to connect the DisplayPort output from the PC to the input of the RD1-4020 board, and a dual link DVI connector to interface with a commercial DVI monitor. 1. Connect the DisplayPort output from a PC source to the RD1-4020 reference board using a DP cable. 2. Connect the output to a DVI monitor using a DVI cable. Connect the 12 V (4A) DC power brick supplied for powering the board. A DisplayPort source that supports DP-Audio transmission is recommended for testing digital audio output of the RD1-4020 board. 3. Once the connection is established, power ON the PC, DVI display, and the RD1-4020 (DP receiver) board. An image should pop up on the screen within 5-6 seconds. 3.1. I2C host port Host connector (CN401) allows configuration of the STDP4020 IC from an external host (microcontroller) through conventional I2C interface. User can plug two wires into pin 5 and pin 6 of this connector to access the I2C port of the chip. STDP4020 default device ID is 0xE6/0xE7, but can be changed through bootstrap settings. Refer to the STDP4020 datasheet for further details. 3.2. In-System Programming (ISP) RD1-4020 uses SPI Flash to store the firmware. In case of a new firmware upgrade, one of the following methods can be used. B0546-GUD-01 MegaChips’ Proprietary Information – Strictly Confidential Page 5 of 16 RD1-4020 1. ISP through DisplayPort connector: Allows programming the SPI Flash through DisplayPort input connector. Requires DP ISP board and GProbe software tool (contact MegaChips). 2. ISP through UART connector: Allows programming the SPI Flash through UART (RS232) connector. Requires GProbe board (RS232 converter circuit) and GProbe software tool (contact MegaChips). 4. Diagnosis If the image does not come up, follow the steps below for diagnosis. Note: The diagnosis requires the MegaChips GProbe software and hardware tool. Contact MegaChips for the GProbe software and board. 1. Install the GProbe diagnostic tool on a computer and set the baud rate to 115,200. 2. Connect MegaChips GProbe board (not supplied) to the serial port (or USB port if using USB version) of the computer. 3. Connect the other end of the GProbe board to connector (CN403) on the RD1-4020 board using 4-wire cable (part of the GProbe board). Note: CHECK POLARITY while connecting the cable; Pin 1 is marked on the board. The 4-wire cable connection from CN403 to GProbe board is 1 to 1. 4. Hit the Reset button on the board (RESET SW402). You will see the firmware version and date of firmware in the GProbe window. This indicates the DP receiver IC is functional. If the message does not appear, reprogram the Flash using the ISP method described in the GProbe user guide. 5. Using an oscilloscope, check the video input and output from the STDP4020. Note: Refer to the STDP4020 datasheet for pin out descriptions. B0546-GUD-01 MegaChips’ Proprietary Information – Strictly Confidential Page 6 of 16 RD1-4020 4.1. Board description Figure 2. Crystal gProbe Block diagram Audio Conn DP TTL/60bits STDP4020 DVI DVI Transmitter SIL7172 AUX I2C DDC Host Conn B0546-GUD-01 SPI Flash EDID LDO Switch regulator MegaChips’ Proprietary Information – Strictly Confidential Page 7 of 16 12V supply DVI-D connector DP Ext. Connector DVI Transmitter SIL7172 RD1-4020 Figure 3. B0546-GUD-01 Board picture MegaChips’ Proprietary Information – Strictly Confidential Page 8 of 16 RD1-4020 4.2. Principal components and functions Below is a summary of all necessary connectors, switches, and other components. Please refer to the latest board schematics for further details. Table 1. Principal components and functions B0546-GUD-01 Label Description RefDes Power Input (+12 V) Input 12 V, down conversion to 5 V, 3.3 V, and 1.2 V. This board uses a switch regulator for 5 V and an LDO [lowdropout] for 3.3 V and 1.2 V. Note the analog and digital supplies (3.3A and 3.3D or 1.2A and 1.2D) are isolated using ferrite beads. CN301 STDP4020 MegaChips DisplayPort Receiver [STDP4020] is capable of receiving and converting DisplayPort signals into 60-bit LVTTL output ports that can be mapped to transfer video data either in two pixels per clock or single pixel per clock up to 300 MHz pixel rate. The STDP4020 supports RGB and YCC video color formats with color depth of 12 (YCC 4:2:2 only), 10, and 8 bits. U601 DP Input DisplayPort input connector CN501 Flash The board includes an SPI Flash of 2 MB to hold the firmware. The SPI Flash can be programmed (ISP) through DP AUX Channel or through UART interface. U702 DVI Out DVI output connector CN1101 SiI7172 Dual-Link DVI transmitters SiI7172 U901,U1001 Digital Audio Output Digital Audio Output [S/PDIF & I2S in 3.3V logic]: This board supports both compressed and uncompressed audio formats. The extracted audio signal is transferred on a digital audio output bus. This device comprises four I2S audio output ports supporting up to eight channel LPCM audio and a single wire S/PDIF output for encoded audio CN402 S/PDIF Output Standard S/PDIF output signal. CN404 Host Interface Host Interface (I2C): This board includes a provision to access the STDP4020 device from an external host controller through the Host Interface (I2C port) connection. CN401 GProbe GProbe Interface (+3.3 V logic): The board also includes a GProbe connector that connects to the STDP4020 UART port for communication with external PC sources for debug purposes. The MegaChips GProbe tool (software) and PC serial port interface board together create a debug environment for device debug and firmware update. The GProbe interface is also used for ISP purposes. CN403 Reset Reset Button, when pressed, triggers a system master reset through the internal reset circuitry. The reset button is used for system reset and debug purposes and is not required for production board design as the STDP4020 produces an internal reset during power ON. SW402 IR Input An IR connector for interfacing ST’s IR receiver. CN701 LED Single LED for indicating the power on status. D301 Crystal An external crystal of 27 MHz. The design makes use of internal oscillator circuitry. X701 MegaChips’ Proprietary Information – Strictly Confidential Page 9 of 16 RD1-4020 Label Description RefDes ESD Diodes ESD protection diodes for DisplayPort signal (main lanes, AUX and HPD line). The board implements low cost ESD diodes. ESD501 ESD503 ESD504 ESD505 EDID EDID Option: Currently not populated to allow pass through. U701 SW401 Switches UART between Host Interface & GProbe Interface (see mark on PCB). SW401 Bootstrap Options The bootstrap options can be configured for: − Single/Dual TTL − IROM/ SPI Flash Refer to the datasheet for more details. R606 R607 R608 R609 4.3. Connector descriptions The RD1-4020 has the following connectors. The locations of these connectors are shown in the board picture in Figure 3. CN301 – +12 V DC 4A Power Input Jack CN403 – GProbe Interface (4x1 pin keyed header) connects to the UART port of the STDP4020. Use the MegaChips GProbe board and interface cable for connecting the board to an external PC that has GProbe software running. Pin 1 +5V Pin 2 GPROBE_TX Pin 3 GPROBE_RX Pin 4 GND CN401 – I2C Host Interface (header 17X2) connector for connecting external host. This is used only when an external host controller accesses the DisplayPort receiver; not used for normal operation. In normal operation, internal MCU controls the overall functioning of the DisplayPort receiver (refer to the schematics for complete pin description for the Host Interface). B0546-GUD-01 Pin 1 & 2 +5V Pin 3 & 4 GND Pin 5 I2C_SCL Pin 6 I2C_SDA Pin 7 HOST_TX Pin 8 HOST_RX Pin 9 RESET from Host MegaChips’ Proprietary Information – Strictly Confidential Page 10 of 16 RD1-4020 Pin 10 NC Pin 11 & 12 GND Pin 13 AUX_UART_TX Pin 14 AUX_UART_RX Pin 15 AUX_I2C_SCL Pin 16 AUX_I2C_SDA Pin 17 & 18 NC Pin 19 & 20 GND Pin 21 & 22 NC Pin 23 IRQ Pin 24 IR_IN Pin 25 I2C_MST_SCL Pin 26 I2C_MST_SDA Pin 27 & 28 GND Pin 29 & 30 NC Pin 31 TP401 Pin 32 NC Pin 33 TP402 Pin 34 NC CN404 – SPDIF output connector. Pin 1 GND Pin 2 I2S_0 Pin 3 GND CN402 – I2S Digital Audio Output (52 pin) connector. Pinout details are shown below. B0546-GUD-01 Pin A1 NC Pin A2 & A3 GND Pin A4 through A6 NC Pin A7 GND Pin A8 & A9 NC Pin A10 I2S_3 Pin A11 I2S_2 Pin A12 I2S_1 Pin A13 NC Pin A14 I2S_0 Pin A15 R412 / OR / I2S_0 Pin A16 & A17 GND MegaChips’ Proprietary Information – Strictly Confidential Page 11 of 16 RD1-4020 Pin A18 I2S_MCLK Pin A19 through A21 NC Pin A22 I2S_BCLK Pin A23 +5V Pin A24 I2S_WCLK Pin A25 & A26 +5V Pin B1 GND Pin B2 & B3 NC Pin B4 & B5 GND Pin B6 & B7 NC Pin B8 & B9 GND Pin B10 through B13 NC Pin B14 & B15 GND Pin B16 through B18 NC Pin B19 & B20 GND Pin B21 +12V Pin B22 NC Pin B23 +12V Pin B24 NC Pin B25 +12V Pin B26 GND CN1101 – Dual-Link DVI-D connector. B0546-GUD-01 Pin 1 DVI_TX2- Pin 2 DVI_TX2+ Pin 3 GND Pin 4 DVI_TX4- Pin 5 DVI_TX4+ Pin 6 AUX_I2C_SCL Pin 7 AUX_I2C_SDA Pin 8 NC Pin 9 DVI_TX1- Pin 10 DVI_TX1+ Pin 11 GND Pin 12 DVI_TX3- Pin 13 DVI_TX3+ Pin 14 +5V Pin 15 GND Pin 16 DVI_HPD_DET Pin 17 DVI_TX0- MegaChips’ Proprietary Information – Strictly Confidential Page 12 of 16 RD1-4020 Pin 18 DVI_TX0+ Pin 19 GND Pin 20 DVI_TX5- Pin 21 DVI_TX5+ Pin 22 GND Pin 23 DVI_CLK+ Pin 24 DVI_CLK- Pin C1 through C4 NC Pin C5 & C6 GND Pin 1 GND Pin 2 +5V Pin 3 IR_IN CN701 – IR input CN501 – DisplayPort connector B0546-GUD-01 Pin 1 ML_L3N Pin 2 GND Pin 3 ML_L3P Pin 4 ML_L2N Pin 5 GND Pin 6 ML_L2P Pin 7 ML_L1N Pin 8 GND Pin 9 ML_L1P Pin 10 ML_L0N Pin 11 GND Pin 12 ML_L0P Pin 13 GND Pin 14 GND Pin 15 +3V3_AVDD/AUX_P Pin 16 GND Pin 17 GND / AUX_N Pin 18 HPD_OUT Pin 19 GND Pin 20 +3V3_DVDD MegaChips’ Proprietary Information – Strictly Confidential Page 13 of 16 RD1-4020 4.4. Switches Host Interface Switch: (SW401): This switch selects the use of GProbe connector or Host Interface connector. Pin 1 HOST_TX Pin 2 UART_TX Pin 3 GPROBE_TX Pin 4 HOST_RX Pin 5 UART_RX Pin 6 GPROBE_RX 4.5. Stuffing options 4.5.1. Single/dual TTL Single TTL configuration: stuff R609, unstuff R608 Dual TTL configuration: stuff R608, unstuff R609 4.5.2. IROM/SPI-Flash OCM boot from IROM code: stuff R607, unstuff R606 OCM boot from external ROM code: stuff R606, unstuff R607 B0546-GUD-01 MegaChips’ Proprietary Information – Strictly Confidential Page 14 of 16 RD1-4020 5. Revision history Table 2. Document revision history Date Revision 27-Aug-2010 A Initial version. 02-Jun-2014 B Updated to comply with MegaChips documentation style/formatting. B0546-GUD-01 Changes MegaChips’ Proprietary Information – Strictly Confidential Page 15 of 16 RD1-4020 Notice Semiconductor products may possibly experience breakdown or malfunction. Adequate care should be taken with respect to the safety design of equipment in order to prevent the occurrence of human injury, fire or social loss in the event of breakdown or malfunction of semiconductor products The overview of operations and illustration of applications described in this document indicate the conceptual method of use of the semiconductor product and do not guarantee operability in equipment in which the product is actually used. The names of companies and trademarks stated in this document are registered trademarks of the relevant companies. MegaChips Co. provides no guarantees nor grants any implementation rights with respect to industrial property rights, intellectual property rights and other such rights belonging to third parties or/and MegaChips Co. in the use of products and of technical information including information on the overview of operations and the circuit diagrams that are described in this document. The product described in this document may possibly be considered goods or technology regulated by the Foreign Currency and Foreign Trade Control Law. In the event such law applies, export license will be required under said law when exporting the product. This regulation shall be valid in Japan domestic. In the event the intention is to use the product described in this document in applications that require an extremely high standard of reliability such as nuclear systems, aerospace equipment or medical equipment for life support, please contact the sales department of MegaChips Co. in advance. All information contained in this document is subject to change without notice. Copyright © 2014 MegaChips Corporation All rights reserved Contact MegaChips Corporation Head Quarters 1-1-1 Miyahara, Yodogawa-ku Osaka 532-0003, Japan TEL: +81-6-6399-2884 MegaChips Corporation Tokyo Office 17-6 Ichiban-cho, Chiyoda-ku, Tokyo 102-0082, Japan TEL: +81-3-3512-5080 MegaChips Corporation Makuhari Office 1-3 Nakase Mihama-ku Chiba 261-8501, Japan TEL: +81-43-296-7414 MegaChips Corporation San Jose Office 2033 Gateway Place, Suite 400, San Jose, CA 95110 U.S.A. TEL: +1-408-570-0555 MegaChips Corporation India Branch 17th Floor, Concorde Block UB City, Vittal Mallya Road, Bangalore 560-001, India TEL: +91-80-4041-3999 B0546-GUD-01 MegaChips Corporation Taiwan Branch RM. B 2F, Worldwide House, No.129, Min Sheng E. Rd., Sec. 3, Taipei 105, Taiwan TEL: +886-2-2547-1297 MegaChips Corporation Tainan Office RM. 2, 8F, No.24, Da Qiao 2 Rd., Yong Kang Dist., Tainan 710, Taiwan TEL: +886-6-302-2898 MegaChips Corporation Zhunan Office No.118, Chung-Hua Rd., Chu-Nan, Miao-Li 350, Taiwan TEL: +886-37-666-156 MegaChips Corporation Shenzhen Office Room 6307, Office Tower, Shun Hing Square, 5002 Shen Nan Dong Road, Luohu District, Shenzhen 518000, P. R. China TEL: +86-755-3664-6990 MegaChips’ Proprietary Information – Strictly Confidential Page 16 of 16