TLK110

• Low Power Consumption:
  • Single Supply: <205mW PHY, 275mW with
    Center Tap (Typical)
  • Dual Supplies: <126mW PHY, 200mW with
    Center Tap (Typical)
• Programmable Power Back Off to reduce PHY power up
  to 20% in systems with shorter cables
• Low deterministic latency supports IEEE1588
  implementation
• Cable Diagnostics
• Programmable Fast Link Down Modes,
  <10µs reaction time
• Variable I/O voltage range: 1.8V to 3.3V
• 3.3V MAC Interface
• Fixed TX Clock to XI, with programmable
  phase shift
• Auto-MDIX for 10/100Mbs
• Energy Detection Mode
• 25 MHz Clock Out
• MII and RMII Capabilities
• Serial Management Interface
• IEEE 802.3u MII
• IEEE 802.3u Auto-Negotiation and Parallel
  Detection
• Error-Free 100Base-T Operation up to
  150 Meters Under Typical Conditions
• Error-Free 10Base-T Operation up to
  300 Meters Under Typical Conditions
• IEEE 802.3u ENDEC, 10Base-T Transceivers and Filters
• IEEE 802.3u PCS, 100Base-TX Transceivers
• IEEE 1149.1 JTAG
• Integrated ANSI X3.263 Compliant TP-PMD Physical
  Sublayer with Adaptive Equalization and Baseline
  Wander Compensation
• Programmable LED Support Link, 10/100Mbs Mode,
  Activity, and Collision Detect
• 10/100Mbs Packet BIST (Built in Self Test)
• HBM ESD protection on RD± and TD± of 16kV
• 48-pin LQFP Package (7mm) × (7mm)

The TLK110 is a single-port Ethernet PHY for 10Base-T and 100Base TX signaling. This device integrates all the physical-layer functions needed to transmit and receive data on standard twisted-pair cables. The TLK110 supports the standard Media Independent Interface (MII) and Reduced Media Independent Interface (RMII) for direct connection to a Media Access Controller (MAC).

The TLK110 is designed for power-supply flexibility, and can operate with a single 3.3V power supply or with combinations of 3.3V and 1.55V power supplies for reduced power operation.

The TLK110 uses mixed-signal processing to perform equalization, data recovery, and error correction to achieve robust operation over CAT 5 twisted-pair wiring. This device not only meets the requirements of IEEE 802.3, but maintains high margins in terms of cross-talk and alien noise.

The TLK110 Ethernet PHY has a special Power Back Off mode to conserve power in systems with relatively short cables. This mode provides the flexibility to reduce system power when the system is not required to drive the standard IEEE 802.3 100m cable length, or the extended 150m, error-free cable reach of the TLK110. For more detail, see application note SLLA328.