TIGER560

  Performs all required USB interfacing and control functions for interfacing a regular phone or phone handset to the PC via USB.
  Audio functions
    − USB audio class device mode
    − Able to use Microsoft audio USB driver
    − 8 bit µ-Law CODEC interface
    − µ-Law to PCM16 translation
    − Record volume control
    − Playback volume control
    − Automatic audio mute
  PCM interface, support for;
    − Silicon Labs Si3211 ProSLIC
    − MC145480 audio codec
    − Many popular codecs/SLICs
    − Master/Slave operation
    − TDM, IOM2, GCI
    − Short and long frames
    − Multiple configuration options
  USB interface
    − Full speed 12MBps USB node
    − On chip USB transceiver
   Device features
    − Single 12MHz crystal oscillator
    − 5V operation
    − Onboard 3.3V regulator
    − 100 pin PQFP package
    − 0.65mm lead pitch
    − Digital PLL
    − Physical Layer Interface (PHY)
    − Media access controller (MAC)
    − Bus or self powered
    − Suspend/resume supported
    − USB specification 1.1 compliant
    − On chip 3.3V regulator
  SPI uP interface Bus
    − 4-wire interface
    − Byte serial data transfer
  Choice of USB descriptor tables
    − Audio device class
    − EPROM download
    − Legacy Tiger500
  Peripheral Interface Bus (PIB)
    − Easy connection of most popular peripheral chips
    − Byte-wide data
    − 6 address lines
    − 7 general purpose control lines
    − Read control signal
    − Write control signal
    − Reset control signal
  4Mbit parallel interface
    − 8bit bi-directional port
    − ISO transfer
    − Up to 4Mbit

TIGER560 VoIP (Internet Phone) applications are becoming increasing popular as VoIP can provide free or low-cost calling worldwide. Early users of VoIP have attempted to use the existing PC sound card and have suffered poor call quality due to echoes and other problems.

To provide a VoIP experience that is the same as using a regular phone and eliminate the poor call quality that results from using the PC sound card, TigerJet has developed the Tiger560 USB controller that enables a regular phone, handset or headset to be interfaced to the USB port on the PC. With the Tiger560 OEMs can quickly bring to market a family of low cost high quality VoIP products.

The Tiger560 USB registers are compatible with the Microsoft USB audio driver and the Tiger560 is able to use the Microsoft written and supported driver directly. For many audio applications such as phone handsets or headsets, no additional software drivers are required. By using the standard Microsoft USB audio driver all popular Internet Telephony applications are supported and users will be able to make free or low cost calls with the same user experience as using a regular phone.

For phone handset or headset to USB applications, a low cost 8bit u-law "telephone" codec can be directly interfaced to the Tiger560 to provide a very highly integrated and low cost solution. For this type of product only the Microsoft USB audio driver is required.

For regular phone to USB applications, a SLIC (subscriber line interface chip) can be interfaced to the Tiger560. The SLIC interfaces to the phone via the standard RJ-11 connector. The Tiger560 provides the USB interfacing and control. Reference drivers are available that enable the phone to ring, provide on hook/off hook detection and implement DTMF decode.

The Tiger560 incorporates an SPI interface, TDM/IOM2/GCI serial interface and a peripheral Interface Bus (PIB). The PIB has byte wide data, 6 address lines, 8 configurable control lines and read and write lines.