SLOC™ (Security Link Over Coax) is a transmission protocol for simultaneously transmitting analog CVBS video and digital IP video over a single coaxial cable. The TW3801 is the transmitting (“camera”) end of a SLOC link, combining Ethernet digital video data and analog CVBS video into a single SLOC signal that can be transmitted over 500m of coaxial cable. It can be embedded into a camera or configured as a stand-alone IP+CVBS-to-SLOC converter. The TW3801 includes an AFE, digital modem, and two Ethernet MII/RMII interfaces. The device accepts an analog CVBS signal and an Ethernet (R)MII signal and encodes it into a SLOC signal.


  • Simultaneous transmission of IP video data and analog CVBS video over up to 500m of RG59 coaxial cable
  • Analog CVBS video preview support
  • Proprietary adaptive analog equalizer for extending the reach of CVBS video
  • Proprietary SLOC-based IP DVR detection
  • Creates a full-duplex 100BASE-T digital link
  • 36Mbps downlink speed from TW3801 to TW3811
  • 4Mbps uplink for SLOC compliance
  • Ethernet MAC MII/RMII interface for interfacing to Camera ISPs
  • Ethernet PHY MII/RMII interface for interfacing to Ethernet PHY chip
  • I2C 2-wire control interface
  • Integrated PLL with 25MHz crystal interface
  • 1.8V, 3.3V supplies
  • 100-TQFP (12mmx12mm) Package


  • Single-channel SLOC transmitter modem
  • Embedded SLOC camera modem


器件号 Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFP Tray 119
Active TQFP Reel 1000


文档标题 language 类型 文档格式 文件大小 日期
star TW3801 Datasheet 数据手册 PDF 957 KB
应用指南 & 白皮书
AN1804: SLOC Design Guide 应用文档 PDF 1.10 MB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB