RK628D is a high-integration interface chip, which can support HDMI /parallel RGB/BT.1120 as input and dual MIPI/dual LVDS/GVI(general video interface)/parallel RGB/ BT.1120 as output with featured scaler inside. The key application scenario is extension of display output port for original application processor such as RK3288 /RK3399, or HDMI in interface providing.
1.1.1 Video input interface
- HDMI RX interface
- Compliant with HDMI 1.4/HDMI 0
- Supports 8/10bit per component video format
- Supports rgb888/yuv420
- Supports Max resolution 4k@60fps (yuv420)
- Supports DDC Bus I2C master interface at 3/5V
- Supports EDID and CEC function
- Parallel RX interface
- Supports Max resolution 1080p@60fps
- Supports 16bits 1120 in
- Supports 24bits parallel RGB in
Table 1-1 RK628D Video input interface
| Interface | Resolution | Data rate | Bit rate per lane |
| HDMI | 4k@60fps | NA | 3Gbps |
| BT.1120 | 1080p@60fps | 148.5M | NA |
| RGB | 1080p@60fps | 148.5M | NA |
1.1.2 Video output interface
- HDMI TX interface
- Supports all DTV resolutions including 720p /1080p
- Supports data rate from 25MHz, 1.65bps up to 3.4Gbps over a Single channel HDMI Internal SRAM
- TMDS Tx Drivers with programmable output swing, resister values and pre- emphasis
- DDC Bus I2C master interface at 3/5V
- The EDID and CEC function are also supported by HDMI Transmitter Controller
- MIPI TX interface
- DSI
- Compliant with MIPI DPHY 2
- Support the DPI interface color coding mappings into 24-bit Interface
- Up to 4 DPHY Data Lanes per channel
- Supports data rate up to 2Gbps
- Supports dual channel ,DSI0 and DSI1
- CSI
- Compliant with MIPI DPHY 2
- Support format: YUV422
- Up to 4 DPHY Data Lanes
- Supports data rate up to 2Gbps
- Supports single channel ,combine with DSI0
- GVI TX interface
- Supports RGB666/RGB888/RGB101010/YCbCR422-8bit/YCBCR422-10bit format
- Supports Max resolution 4k@60fps
- Supports up to 3.75Gbps data rate(effective data rate 3Gbps)
- Supports 1/2/4/8 lanes
- DSI
- Supports output lanes flexible mapping
- Supports 1/2 section mode
- LVDS TX interface
- Compliant with the Standard TIA/EIA-644-A LVDS standard
- Supports data rate up to 1Gbps
- Support 8bit format-1, format-2, format-3 display mode, Support 6bit display mode.
- Supports dual channel LVDS
- Parallel TX interface
- Supports Max resolution 1080p@60fps
- Supports 16bits 1120 out
- Supports 24bits parallel RGB out
Table 1-2 RK628D Video output interface
| Interface | Resolution | Data rate | Bit rate per lane |
| GVI | 4k@60fps | NA | 3.75Gbps |
| Dual MIPI | 2k@60fps | NA | 1.2Gbps |
| MIPI | 1080p@60fps | NA | 1.2Gbps |
| Dual LVDS | 1080p@60fps | NA | 1 Gbps |
| LVDS | 720p@60fps | NA | 1 Gbps |
| BT.1120 | 1080p@60fps | 148.5M | NA |
| RGB | 1080p@60fps | 148.5M | NA |
| HDMI | 1080p@60fps | 148.5M | NA |
1.1.3 TX/RX adapter
- Interaction of HDP signal between HDMI TX and HDMI RX
- Support HDMI TX CEC function
- Support RX HDCP1.3 inside-key It is writable
- Support HDMI RX/TX
- Support on-chip EDID It is readable and writable
1.1.4 Post process
- CSC
- RGB2YUV
- YUV2RGB
- YUV2VYU
- Display interface
- Parallel display Interface: 30-bit(RGB/YUV)
- Asynchronous output pixel clock (PLL required)
- Flexible display timing setting
- Configurable border black area
- Scaling down
- Max input resolution: 4096×2160
- Arbitrary non-integer scaling ratio
- Support two mode: bilinear and average
- Max 1/4 scaling ratio for bilinear scaling down
- Max 1/6 scaling ratio for average scaling down
- Scaling up
- Max output resolution: 4096×2160
- Arbitrary non-integer scaling ratio
- Support four scaling up mode for different effect
- Max 6 scaling ratio
- Split
- Left-right mode
- Odd-even mode(LVDS only)
1.1.5 Others
- Audio
- Support HDMI RX I2S interface, up to 48kHz sample rate, 8 channel
- Support I/O I2S interface, 8 channel
- Support HDMI TX I2S interface, 8 channel
- EFUSE
- One-time programmable nonvolatile EFUSE storage cells organized as 64×8 bits
- 1V typical core voltage
- AVDD is NOT allowed to exceed 75V
- Burning requirements:
- 5V typical burning voltage (AVDD), AVDD must be high during PGM mode. AVDD must be low or floating during READ mode and inactive mode
- 2us burning pulse width
- Ambient temperature range of 10~40℃
- Burning at wafer, package, or field level
- Package Type
- BGA144(body: 8mmx8mm; ball size: 0.3mm; ball pitch: 65mm)
RK628D Datasheet Rev 1.0
