MIPI adapter

MIPI adapter

I used to play with grayscale screen (128*64) -> Play with color screen (320*240) -> RGB color screen (800*480) -> Now it's a mobile screen, but how to drive it? I saw SSD2828 available in Lichuang Mall, so I started making the adapter board.

"With one board in hand, we can test all the mobile phone screens in the world" has always been our goal. As the resolution of screens becomes higher and higher, MCU cannot drive high-resolution screens.

The adapter board supports MCU, RGB, MIPI, LVDS and many other interfaces. What everyone is concerned about is the supported lattice size. At present, the highest FHD (1920*1080) MIPI 4-channel interface has been adjusted and is backward compatible. Currently, NT35596(FHD), SSD2075(HD)NT35590(HD), OTM1283(HD), OTM9605(QHD), HX8389(QHD), OTM9608(QHD), NT35510(WVGA), OTM8009A(WVGA), LIL9487( The mipi interface of many ICs such as HVGA) supports the dot matrix of mobile phone screens currently on the market without any problems. Remove the 2828 initialization and it is a standard RGB program. Adding an LVDS conversion IC to RGB is the LVDS interface, and the RGB interface is reused as an MCU interface. .

Resolution: Supports FHD(1920*1080), HD(1280*720), QHD(540*960), WVGA(480*800) and the following dot matrix output interfaces: 1: MIPI, 4-channel Video mode 2: RGB/ MCU interface multiplexing, 24bit/18bit/16bit 3: LVDS 4 channels (an adapter board will be drawn in the future)

SSD2828 features

• Supports up to 4Gbps over serial link
• Supports up to 4 data channels
• The number of signals is significantly reduced compared to traditional RGB transmission
• In video mode, each display row supports up to 1920 pixels and refresh rate up to 60hz
• In video mode, supports up to 2560 pixels per display line and refresh rate up to 30hz
• By using low-amplitude signals on differential pairs to process serial data, power consumption is reduced and EMI is reduced.
• Supports parallel RGB interface (DPI 2.0) up to 24 bits
• Supports up to 16-bit serial SPI interface (DBI 2.0)
• Supports both command mode and video mode in MIPI DSI standard
• Supports 16, 18 and 24 bits per pixel in raw or pixel mode for command mode transfers
• Supports independent bidirectional data transfer for each DSI (forward link in high-speed and low-power modes, reverse link in low-power mode)
• Supports ultra-low power mode in idle state of each DSI
• Video mode supporting CABC function
• On-chip PLL with variable output frequency
• MIPI Analog and Digital Power Supply: (MDVDD and MAVDD) 1.2V +/- 10%
• IO power supply: (VDDIO) 1.8~3.3V +/- 10%
• Support MIPI standard DSI (v1.01.00), DCS (v1.02.00), D-PHY (v1.00.00)