Camera Serial Interface Converter, 4K HDMI to MIPI CSI-2

The TC358840 enables a host processor with a MIPI CSI-2 dual link interface to accept 4K HDMI video and audio streams and process them as an incoming data source.

Application processors can generate different types of video data for internal displays, external displays, as well as analog TV and HDMI TV; but some application processors have limitations in handling video data as an input source. A common input interface in application processors for video streams is MIPI CSI-2, which is a high-speed serial interface to an embedded camera.

The TC358840 bridge chips enable a 4K HDMI video stream to be converted in a format that can be processed by the application processor as a MIPI CSI-2 video stream. HDMI audio stream is also supported and can be transmitted over I²S or over a MIPI SLIMbus® (Serial Low-power Inter-chip Media bus).

A related device is the TC358870, which will convert 4K HDMI to MIPI CSD for transmitting ultra HD data to a display panel.

• HDMI-RX interface: HDMI 1.4b
  • Video format support:
    • Up to 4096 x 2160 (4K x 2K) @ 24 fps RGB or YCbCr444: 24-bpp
    • Up to 3840 x 2160, @ 30 fps, RGB or YCbCr444: 24-bpp
  • Color format conversion support:
  • 4:2:2 to 4:4:4
  • 4:4:4: to 4:2:2
  • RGB888 to YCbCr (4:4:4/4:2:2)
  • YCbCr (4:4:4/4:2:2) to RGB888/666
  • Maximum HDMI clock speed of 297 MHz
  • Audio support
  • 3D support
  • Support for HDCP1.4 decryption
  • EDID support
• CSI2 TX Interface:
• MIPI CSI-2 compliant, version 1.01 revision 0.04
• Dual links CSI-2, CSI0 and CSI1, each link supports 4 data lanes @ 1 Gbps/data lane
• Video data format support:
  • RGB888, YCbCr444, YCbCr 422 16-bit and YCbCr 422 24-bit
  • YCbCr inputs can be converted into RGB888 before outputting
• Audio output interface: I²S, TDM, S/P-DIF or SLIMbus
• I²C slave interface
• IR demodulator (NEW protocol)
• Core: 1.1 V and MIPI D-PHY: 1.2 V
• I/O: 1.8...3.3 V
• HDMI, audio and analog PLL: 3.3 V
• Power supply inputs:
• Package FBGA 80-pin, 7.0 x 7.0 x 1.0 mm³, 0.65 mm ball pitch