Features: 1.25 Gigabits Per Second (Gbps) Gigabit Ethernet Transceiver
Based On the P802.3Z Specification
Transmits Serial Data Up to 1.25 Gbps
Operates With 3.3-V Supply Voltage
5-V Tolerant on TTL Inputs
Interfaces to Electrical Cables/Backplane or with Optical Modules
PECL Voltage Differential Signaling Load, 1 V Typ with 50 W 75 W
Receiver Differential Input Voltage 200 mV Minimum
Low Power Consumption
64-Pin Quad Flat Pack With Thermally Enhanced Package Pinout
SpecificationsSupply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 0.5 to 4.0 V
Input voltage, VI (TTL, PECL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 to 4.0 V
Output current IO, (TTL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Output current IO, (PECL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Voltage range at any terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 to VCC + 0.5 V
Electrostatic discharge, 5-V tolerant input terminals (see Note 2) . . . . . . . . . . . . . . Class 1, A:1 kV, B:150 V
Electrostatic discharge, all other terminals (see Note 2) . . . . . . . . . . . . . . . . . . .. . . Class 1, A:2 kV, B:200 V
Characterized free-air operating temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
DescriptionThe TNETE2201 Gigabit Ethernet transceiver provides for ultra high-speed bidirectional point-to-point data transmission. This device is based on the timing requirements of the proposed 10-bit interface specification by the P802.3z Gigabit Task Force.
The intended application of this TNETE2201 device is to provide building blocks for developing point-to-point baseband data transmission over controlled-impedance media of approximately 50 W to 75 W. The transmission media can be printed-circuit board traces, back planes, cables, or fiber-optical media. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment.
The TNETE2201 performs the data serialization and deserialization (SERDES) functions for the gigabit ethernet physical layer interface. The transceiver operates at 1.25 Gbps (typical), providing up to 1000 Mbps of bandwidth over a copper or optical media interface. The serializer/transmitter accepts 8b/10b parallel encoded data bytes. The parallel data bytes are serialized and transmitted differentially nonreturn-to-zero (NRZ) at pseudo-ECL (PECL) voltage levels. The deserializer/receiver extracts clock information from the input serial stream and deserializes the data, outputting a parallel 10-bit data byte. The 10-bit data bytes are output with respect to two receive byte clocks (RBC0, RBC1) allowing a protocol device to clock the parallel bytes inRBC clock rising edges.
The transceiver automatically locks onto incoming data without the need to prelock. However, the transceiver can be commanded to lock to the externally supplied reference clock (REFCLK) as a reset function, if needed. The TNETE2201 provides an internal loopback capability for self-test purposes. Serial data from the serializer is passed directly to the deserializer allowing the protocol device a functional self-check of the physical interface. The TNETE2201 is characterized for operation from 0°C to 70°C.
TNETE2201B Data Sheet
