TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 D D D D D 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 D D D D D Interfaces to Electrical Cables/Backplane or Optical Modules PECL Voltage Differential Signaling Load, 1 V Typ With 50 Ω – 75 Ω Receiver Differential Input Voltage 200 mV Minimum Low Power Consumption 64-Pin Quad Flat Pack With Thermally Enhanced Package description The TNETE2201B 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. 1 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 11 38 12 37 13 36 14 35 15 34 33 16 1718 19 20 21 22 23 24 25 26 27 28 29 30 31 32 RC0 SYNC GND_TTL RD0 RD1 RD2 VCC_TTL RD3 RD4 RD5 RD6 VCC_TTL RD7 RD8 RD9 GND_TTL TC0 VCC _TX LOOPEN VCC _A GND_A REFCLK VCC _CMOS SYNCEN GND_CMOS RESERVED LCKREFN VCC _A VCC _A RBC1 RBC0 GND_A GND_CMOS TD0 TD1 TD2 VCC_CMOS TD3 TD4 TD5 TD6 VCC_CMOS TD7 TD8 TD9 GND_CMOS GND_TX TC1 VCC _RX RC1 GND_A VCC _A DOUT_TXP DOUT_TXN VCC _A VCC _A GND_CMOS VCC _A GND_A VCC _A DIN_RXP VCC _A DIN_RXN GND_RX PHD OR PJD PACKAGE (TOP VIEW) Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 description (continued) The intended application of this device is to provide building blocks for developing point-to-point baseband data transmission over controlled-impedance media of approximately 50 Ω to 75 Ω. 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 TNETE2201B 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 in RBC 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 TNETE2201B 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 TNETE2201B is characterized for operation from 0°C to 70°C. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 functional block diagram LOOPEN TX+ TX– TD0 – TD9 10 / 10-Bit Register 10 / Clock Multiplier REFCLK 125 MHz SYNCEN Synchronous Detect SYNC RD0 – RD9 Shift Register 10 / 10-Bit Register 10 / Shift Register 62.5 MHz RBC0 ÷2 RBC1 125 MHz PLL Clock Recovery and Data Retiming 62.5 MHz 2:1 MUX RX+ RX– POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 I/O structures PECL inputs (DIN_RXP, DIN_RXN) PECL outputs (DIN_TXP, DIN_TXN) VDD VDD 100 Ω DIN_RXP DOUT_TXP 4 kΩ VCM VDD + _ VDD 4 kΩ DIN_RXN DOUT_TXN CMOS inputs (TD0 – TD9, LOOPEN, REFCLK, SYNCEN, LCKREFN) VDD VDD TERMINALS P R1 120 Ω Input Open Circuit Open Circuit LOOPEN Open Circuit 400 kΩ 400 kΩ Open Circuit N CMOS outputs (RD0 – RD9, RBC0, RBC1, SYNC) VDD P Output N 4 POST OFFICE BOX 655303 R2 REFCLK, TD0 – TD9 SYNCEN, LCKREFN R2 R1 • DALLAS, TEXAS 75265 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 Terminal Functions TERMINAL DESCRIPTION NAME NO. TYPE DOUT_TXP DOUT_TXN 62 61 Output Differential output transmit. DOUT_TXP and DOUT_TXN are differential serial outputs that interface to a copper or an optical I/F module. These terminals transmit NRZ data at a rate of 1.25 Gbps. DOUT_TXP and DOUT_TXN are held static when LOOPEN is high and are active when LOOPEN is low. DIN_RXP DIN_RXN 54 52 Input Differential input receive. DIN_RXP and DIN_RXN together are the differential serial input interface from a copper or an optical I/F module. These terminals receive NRZ data at a rate of 1.25 Gbps and are active when LOOPEN is held low. LCKREFN 27 Input Lock to reference. When LCKREFN is asserted low, the receive PLL phase locks to the supplied REFCLK signal. LCKREFN prelocks or resets the receive PLL. LOOPEN 19 Input Loop enable. When LOOPEN is high (active), the internal loop-back path is activated. The transmitted serial data is directly routed to the inputs of the receiver. This provides a self-test capability in conjunction with the protocol device. The DOUT_TXP and DOUT_TXN outputs are held static during the loop-back test. LOOPEN is held low during standard operational state with external serial outputs and inputs active. RBC0 RBC1 31 30 Output Receive byte clock. RBC0 and RBC1 are 62.5-MHz recovered clocks used for synchronizing the 10-bit output data on RD0 – RD9. The 10-bit output data words are valid on the rising edges of RBC0 and RBC1. These clocks are adjusted to half-word boundaries in conjunction with synchronous detect. The clocks are always expanded during data realignment and never slivered or truncated. RBC0 registers bytes 1 and 3 of received data. RBC1 registers bytes 0 and 2 of received data. RC1, RC0 49 48 Analog Receive capacitor. RC0 and RC1 are external capacitor connections used for the receiver internal PLL filter. The recommend value for this external capacitor is 2 nF (a value of 0.1 µF can also be used, see Note 1). 45,44,43,41 40,39,38,36 35,34 Output Receive data. These outputs carry 10-bit parallel data output from the transceiver to the protocol layer. The data is referenced to terminals RBC0 and RBC1. Received data byte 0, which contains the K28.5 character, is byte aligned to the rising edge of RBC1. RD0 is the first bit received. REFCLK 22 Input Reference clock. REFCLK is an external 125 MHz input clock that synchronizes the receiver and transmitter interfaces. The transmitter uses this clock to register the 10-bit input data (TD0..TD9) for serialization. REFCLK is also used as a RX PLL preset or reference when LCKREFN is enabled. SYNC 47 Output Synchronous detect. SYNC is asserted high upon detection of the K28.5 character in the serial data path. SYNC is a high level for 1/2 REFCLK period. SYNC pulses are output only when SYNCEN is activated (asserted high). Note: SYNC is active on byte0 and, therefore, active on rising edge of RCB1. SYNCEN 24 Input Synchronous function enable. When SYNCEN is asserted high, the internal synchronization function is activated. When this function is enabled, the transceiver detects the K28.5 character (0011111010 negative beginning disparity) in the serial data stream and realigns data on byte boundaries if required. When SYNCEN is low, serial input data is unframed in RD0 – RD9. TC1 TC0 16 17 Analog Transmit capacitor. TC0 and TC1 are external capacitor connections used for the transmitter internal PLL filter. The recommended value of this external capacitor is 2 nF (a value of 0.1 µF can also be used, see Note 1). 2,3,4,6 7,8,9,11 12,13 Input Transmit data. These inputs carry 10-bit parallel data output from a protocol device to the transceiver for serialization and transmission. This 10-bit parallel data is clocked into the transceiver on the rising edge of REFCLK and transmitted as a serial stream with TD0 sent as the first bit. I/O and DATA RD0 – RD9 TD0 – TD9 NOTE 1: A filter capacitor value of 0.1 µF can be used with the following consideration: The tracking bandwidth of the PLL will be reduced due to the larger filter capacitor. This reduces the transmit and receive PLL’s ability to reject low-frequency noise or wonder in the voltage supply or datastream. Care must be taken in the filtering of the supply VCC_TX (terminal 18) and VCC_RX (terminal 50) to reject power supply noise. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 Terminal Functions (Continued) TERMINAL NAME DESCRIPTION NO. TYPE 20,28,29,53 55,57,59,60 63 Supply Analog power. VCC_A provides a supply reference voltage for the high-speed analog circuits. 5,10,23, Supply Digital PECL logic power. VCC_CMOS provides an isolated low-noise power supply for the logic circuits. VCC_RX 50 Supply Receiver power. VCC_RX provides a low-noise supply reference voltage for the receiver high-speed analog circuits. VCC_TTL VCC_TX 42,37 Supply TTL power. VCC_TTL provides a supply reference voltage for the receiver TTL circuits. 18 Supply Transmitter power. VCC_TX provides a low-noise supply reference voltage for the transmitter high-speed analog circuits. 21,32,56,64 Ground Analog ground. GND_A provides a ground reference for the high-speed analog circuits. 1,14, 25,58 Ground Digital PECL logic ground. GND_CMOS provides an isolated low-noise ground for the logic circuits. GND_RX 51 Ground Receiver ground. GND_RX provides a ground reference for the receiver circuits. GND_TTL 33,46 Ground TTL circuit ground. GND_TTL provides a ground for TTL interface circuits. GND_TX 15 Ground Transmitter ground. GND_TX provides a ground reference for the transmitter circuits. RESERVED 26 POWER VCC_A VCC_CMOS GROUND GND_A GND_CMOS MISCELLANEOUS Reserved. Internally pulled to GND, leave open or assert low. detailed description data transmission The transmitter registers incoming 10-bit-wide data words (8b/10b encoded data, TD0...TD9) on the rising edge of REFCLK (125 MHz). The reference clock is also used by the serializer, which multiplies the clock by a factor of 10 providing a 1.25 Gbaud signal that is fed to the shift register. The data is then transmitted differentially at PECL voltage levels. The 8b/10b encoded data is transmitted sequentially bit 0 through 9. transmission latency The data transmission latency of the TNETE2201B is defined as the delay from the initial 10-bit word load to the serial transmission of bit 9. The typical transmission latency is 9 ns. data reception The receiver of the TNETE2201B deserializes 1.25 Gbps differential serial data. The 8b/10b data (or equivalent) is retimed based on an extracted clock from the serial data. The serial data is then aligned to the 10-bit word boundaries and presented to the protocol controller along with two receive byte clocks (RBC0, RBC1). RBC0 and RBC1 are 180 degrees out of phase and are generated by dividing down the recovered 1.25 Gbps (625 MHz) clock by 10 providing for two 62.5-MHz signals. The receiver presents the protocol device byte 0 of the received data valid on the rising edge of RBC1. NOTE: This allows the option of byte alignment without the use of the synchronous detection (SYNC) function by the protocol device. The receiver PLL can lock to the incoming 1.25 GHz data without the need for a lock-to-reference preset. The received serial data rate (RX+ and RX–) should be 1.25 Gbps ± 0.01% (100 ppm) for proper operation. 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 data reception (continued) During a bus error condition or word alignment, the receive byte clocks RBC0 and RBC1 are stretched (never truncated). When the incoming serial data does not meet its frequency requirements, then the receive byte clock frequency is maintained at 62.5 MHz. receive PLL operation The receive PLL provides automatic locking to the incoming data. At power up, the maximum initial lock time is 500 µs. The PLL can also be initiated or set to phase lock to the externally supplied reference clock by enabling lock-to-reference (LCKREFN). The lock-to-reference causes the receive PLL to lock to 10× the reference clock (REFCLK) input providing a PLL preset and reset capability. If during normal operation a transient occurs, which is defined as any arbitrary phase shift in the incoming data and/or a frequency wander of up to 200 ppm, then the PLL recovers lock within 2.4 µs. Any condition exceeding these values is considered a power-up scenario and the PLL recovers lock within 500 µs with a 0.1 µF capacitor the PLL recovers lock within 10 ms on power up (see the following note). NOTE: A filter capacitor value of 0.1 µF can be used with the following consideration: The tracking bandwidth of the PLL will be reduced due to the larger filter capacitor. This reduces the transmit and receive PLL’s ability to reject low-frequency noise or wonder in the voltage supply or datastream. Care must be taken in the filtering of the supply VCC_TX (terminal 18) and VCC_RX (terminal 50) to reject power supply noise. receiver word alignment The TNETE2201B uses a 10-bit K28.5 character (comma character) word alignment scheme. The following sections explain how this scheme works and how it realigns itself. comma character on expected boundary The TNETE2201B provides 10-bit K28.5 character recognition and word alignment. The 10-bit word alignment is enabled by forcing SYCNEN high. This enables the function that examines and compares ten bits of serial input data to the K28.5 synchronization character. The K28.5 character is defined in the fibre channel standard as a pattern consisting of 0011111010 (a negative number beginning disparity) with the 7 MSBs (0011111) referred to as the comma character. The K28.5 character was implemented specifically for aligning data words. As long as the K28.5 character falls within the expected 10-bit word boundary, the received 10-bit data is properly aligned and data realignment is not required. Figure 1 shows the timing characteristics of RBC0, RBC1, SYNC and RD0 – RD9 while synchronized. NOTE: The K28.5 character is valid on the rising edge of RBC1. RBC0 RBC1 SYNC RD0 – RD9 K28.5 Dxx.x Dxx.x Dxx.x K28.5 Dxx.x Figure 1. Synchronous Timing Characteristics Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 comma character not on expected boundary When synchronization is enabled and a K28.5 character straddles the expected 10-bit word boundary, then word realignment is necessary. Realignment or shifting the 10-bit word boundary truncates the character following the misaligned K28.5, but the following K28.5 and all subsequent data is aligned properly as shown in Figure 2. The 10b specification requires that RCLK cycles can not be truncated and can only be stretched or stalled in their current state during realignment. With this design the maximum stretch that occurs is an extra 10 bit times. This occurs during a worst case scenario when the K28.5 is aligned to the falling edge of RBC1 instead of the rising edge. This system transmits a minimum of three consecutively ordered K28.5 data sets between frames and ensures that the receiver sees at least two of K28.5 sets (the fabric is allowed to drop one). Figure 2 shows the timing characteristics of the data realignment. Systems that do not require framed data can disable byte alignment by tying SYNCEN low. When a synchronization character is detected the SYNC signal is asserted high and is aligned with the K28.5 character. The duration of the SYNC-signal pulse is equal to the duration of the data which is half an RCLK period. Typical Receive Path Latency = 18 ns Serial Rx Data Stream DIN_RxP – DIN_RxN K28.5 Dxx.x Dxx.x K28.5 Dxx.x Dxx.x Dxx.x K28.5 Dxx.x K28.5 Dxx.x K28.5 10 Bit Times 10 Bit Times 20 Bit Times (MAX) RBC1 RBC0 Corrupted Data Misalignment Corrected Worst Case Misaligned K28.5 RD0 – RD9 Dxx.x Dxx.x K28.5 Dxx.x Dxx.x K28.5 Dxx.x Dxx.x SYNC Figure 2. Word Realignment Timing Characteristics Waveforms data reception latency The serial-to-parallel data latency is the time from when the first bit arrives at the receiver until it is output in the aligned parallel word with RD0 received as first bit. The receive latency is typically 18 ns. 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 loop-back testing The transceiver can provide a self-test function by enabling (LOOPEN to high level) the internal loop-back path. Enabling LOOPEN causes serially transmitted data to be routed internally to the receiver. The parallel data output can be compared to the parallel input data for functional verification. The external differential output is held in a static state during loop-back testing. absolute maximum ratings† Supply voltage, VCC (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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 3) . . . . . . . . . . . . . . Class 1, A:1 kV, B:150 V Electrostatic discharge, all other terminals (see Note 3) . . . . . . . . . . . . . . . . . . . . . . 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 † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 2. All voltage values, except differential I/O bus voltages, are with respect to network ground. 3. This parameter is tested in accordance with MIL-PRF-38535. recommended operating conditions PARAMETER TEST CONDITIONS Supply voltage, VCC Supply current, ICC (static) Static pattern† Power dissipation, PD (static) Outputs open, Supply current, ICC (dynamic) K28.5 Power dissipation, PD (dynamic) Outputs open, MIN NOM MAX UNIT 3.14 3.3 3.47 V 180 260 mA 590 900 mW Static pattern† K28.5 Operating free-air temperature, TA † Power (static pattern) = 125 MHz to the receiver and 5 ones and 5 zeros to the transmitter. 240 330 mA 790 1150 mW 0 70 °C reference clock (REFCLK) timing requirements over recommended operating conditions (unless otherwise noted)† PARAMETER TEST CONDITIONS Frequency MIN NOM MAX UNIT TYP – 0.01% 125 TYP + 0.01% MHz 100 ppm Accuracy –100 Duty cycle 40% 50% 60% Jitter Random and deterministic 40 ps † This clock should be crystal referenced to meet the requirements of the this table. The maximum rate of frequency change specified is valid after 10 seconds from power on. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 electrical characteristics over recommended operating conditions (unless otherwise noted) TTL Signals: TD0 .. TD9, REFCLK, LOOPEN, SYNCEN, SYNC, RD0 .. RD9, RBC0, RBC1, LCKREFN PARAMETER VOH VOL High-level output voltage VIH VIL High-level input voltage IIH Low-level output voltage IOH = – 400 µA IOL = 1 mA MIN TYP 2.4 3 0.25 2 Low-level input voltage High level input current High-level IIL Low level input current Low-level ci Input capacitance 10 TEST CONDITIONS VCC = MIN, VCC = MIN, REFCLK VCC = MAX, VCC = MAX, VI = 2.4 V VI = 2.4 V REFCLK VCC = MAX, VCC = MAX, VI = 0.4 V VI = 0.4 V MAX V 0.4 V 5.5 V 0.8 V 40 µA 900 µA µA –40 µA –900 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT pF TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 TRANSMITTER SECTION differential electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS VOD to peak) Driver differential output voltage (peak (peak-to-peak) VOC Driver common-mode output voltage MIN TYP MAX RL = 75 Ω, See Figure 3 1100 2200 RL = 50 Ω, See Figure 3 1100 2200 RL = 75 Ω 2100 UNIT mV mV differential switching characteristics over recommended operating conditions (unless otherwise noted). PARAMETER tr3 tf3 TEST CONDITIONS MIN TYP MAX UNIT Serial data deterministic jitter (peak-to-peak) Differential output jitter 96 ps Serial data total jitter (peak-to-peak) Differential output jitter 192 ps Differential signal rise time (20% to 80%) RL = 75 Ω, S Fi See Figure 3 300 ps 300 ps Differential signal fall time (20% to 80%) CL = 5 pF, 80% TX+ ≈ VCC – 0.7 V 50% 20% ≈ VCC – 1.6 V 80% ≈ VCC – 0.7 V tf tr TX– 50% 20% ≈ VCC – 1.6 V 80% ≈1 V tr tf VOD 50% 20% ≈ –1 V tf3 tr3 Figure 3. Differential and Common-Mode Output Voltage Definitions POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 transmitter timing requirements over recommended operating conditions (unless otherwise noted) TEST CONDITIONS tsu1 th1 MIN Setup time, TD0 – TD9 valid to REFCLK ↑ See Figure 4 2 Hold time, REFCLK ↑ to TD0 – TD9 invalid See Figure 4 1 Parallel-to-serial data latency NOM MAX UNIT ns ns 9 ns transmit interface timing The transmit interface is defined in the 10 b spec as the 10-bit parallel data input to the physical layer for serial transmission. The timing values are specified from REFCLK midpoint to valid input signal levels or from valid input signal levels to REFCLK midpoint. 50% REFCLK tsu1 th1 ÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉ ÉÉÉÉÉÉÉ TD0 – TD9 Valid Valid Figure 4. Transmit 10-Bit Interface Timing Waveforms 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Valid TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 RECEIVER SECTION differential electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER |VID | Differential input voltage (peak-to-peak) TEST CONDITIONS MIN See Figure 5 400 TYP MAX UNIT 2600 mV receiver and phase-locked loop performance characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS Jitter tolerance MIN TYP See P802.3Z specification From power up at 2 nF capacitor value From power up at 0.1 µF capacitor value (See Note 4) Data acquisition lock time Data relock time † UI is the unit interval of a single bit (800 ps). From synchronization loss MAX UNIT† 74.9% UI 500 µs 10 ms 2500 ns NOTE 4: A filter capacitor value of 0.1 µF can be used with the following consideration: The tracking bandwidth of the PLL will be reduced due to the larger filter capacitor. This reduces the transmit and receive PLL’s ability to reject low-frequency noise or wonder in the voltage supply or datastream. Care must be taken in the filtering of the supply VCC_TX (terminal 18) and VCC_RX (terminal 50) to reject power supply noise. receive clock timing requirements over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fclk fclk Clock frequency, RBC0 62.5 MHz Clock frequency, RBC1 (180 deg out of phase with RBC0) 62.5 MHz tr4 tf4 Data rise time See Figure 6 0.7 4 ns Data fall time See Figure 6 0.7 4 ns tr5 tf5 Rise time, single-ended output signal on RBC0 or RBC1 See Figure 6 0.7 2 ns Fall time, single-ended output signal on RBC0 or RBC1 See Figure 6 0.7 2 ns 40% 60% Duty cycle, RBC0 or RBC1 t(skew) tsu2 Skew time, RBC1 ↑ to RBC0 ↑ See Figure 7 7.5 Setup time, RD0 – RD9, SYNC valid to RBC0 ↑ See Figure 7 2.5 ns tsu3 tsu4 Setup time, RD0 – RD9, SYNC valid to RBC1 ↑ See Figure 7 2.5 ns Setup time, RBC1 ↑ to RD0 – RD9, SYNC invalid See Figure 7 1.5 ns tsu5 Setup time, RBC1 ↑ to RD0 – RD9, SYNC invalid See Figure 7 1.5 Serial-to-parallel data latency 8 8.5 ns ns 18 ns † t(drift) is the minimum time for RBC0 or RBC1 to drift from 63.5 MHz to 64.5 MHz or from 60 MHz to 59 MHz from the RCLK lock value. This is applicable under all input signal conditions with PLL locked to the REFCLK of DATA signals. | VID | 0V | VID | Figure 5. Differential Input Voltage (Peak-to-Peak) Timing Waveform POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 80% 50% Data 20% tf4 tr4 80% Clock 50% 20% tf5 tr5 Figure 6. Receiver Data Measurement Levels t(skew) 50% 50% RBC0 50% RBC1 50% tsu2 tsu3 tsu5 ÉÉÉ ÉÉÉ ÉÉÉ ÉÉÉ ÉÉÉ ÉÉÉ ÉÉ ÉÉ ÉÉ ÉÉ ÉÉ ÉÉ tsu4 RD0 – RD9, SYNC Valid Valid Valid Valid Figure 7. Receiver Interface Timing Waveforms 14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Valid TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 APPLICATION INFORMATION Ferrite Bead Ferrite Bead 3.3 V 50 0.01 µF VCC_RX 51 5 Ω at 100 MHz 18 VCC_TX GND_RX GND_TX TNETE2201B DOUT_TXP 15 3.3 V 0.01 µF 62 Controlled Impedance Transmission Line R(pd) (see Note A) 10 / TD0 – TD9 22 27 19 Host Protocol Device 24 47 2 / 10 / REFCLK DOUT_TXN 61 Controlled Impedance Transmission Line 54 Controlled Impedance Transmission Line LCKREFN LOOPEN SYNCEN SYNC DOUT_RXP RD0 – RD9 31,30 50 Ω – 75 Ω RBC0,RBC1 Vt (see Note B) DOUT_RXN 49 PLL Filter Capacitor = 2 nF or 0.1 µF (see Note C) 48 RC1 RC0 TC1 TC0 52 Controlled Impedance Transmission Line 16 17 PLL Filter Capacitor = 2 nF or 0.1 µF (see Note C) NOTES: A. R(pd) – This value is set to match the falling edge to rising edge transistion times, typically 150 Ω. to 220 Ω.. B. Vt (termination voltage): Vt = VCC – 1.3 V, if ac coupled Vt = VCC – 2 V, if directly coupled. C. A filter capacitor value of 0.1 µF can be used with the following consideration: The tracking bandwidth of the PLL will be reduced due to the larger filter capacitor. This reduces the transmit and receive PLL’s ability to reject low-frequency noise or wonder in the voltage supply or datastream. Care must be taken in the filtering of the supply VCC_TX (terminal 18) and VCC_RX (terminal 50) to reject power supply noise. Figure 8. Typical Application Circuit POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 15 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 MECHANICAL INFORMATION The TNETE2201B incorporates the latest development in TI’s package line. The new patent-pending design, designated the PWP, delivers thermal performance comparing to a heat-spreader design in a true low-profile package. The PWP for the TNETE2201B is designed to maximize heat transfer away from the die through the top of the chip. As seen in Figures 9 and 10 the bottom of the leadframe is deep downset towards the top of the chip, providing a thermal path away from the die and board. All this has been accomplished without exceeding the 1.15 mm height of the TQFP. This package in the 10mm × 10mm TQFP (PJD) provides a thermal resistance RθJA of 40°C/W and the package in the 14mm × 14mm TQFP (PHD) provides a RθJA of 40°C/W. Figure 9. Heat-Spreader Design Figure 10. Leadframe Downset 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 MECHANICAL INFORMATION PHD (S-PQFP-G64) PowerPAD PLASTIC QUAD FLATPACK (DIE DOWN) 0,40 0,30 0,80 48 0,20 M 33 32 49 Thermal Pad (see Note D) 0,13 NOM 64 17 Gage Plane 1 16 12,00 TYP 14,05 SQ 13,95 0,25 0,15 0,05 0°– 7° 0,75 0,45 16,15 SQ 15,85 1,05 0,95 Seating Plane 0,10 1,20 MAX 4087742/A 12/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions include mold flash or protrusions. The package thermal performance may be enhanced by attaching an external heat sink to the thermal pad. This pad is electrically and thermally connected to the backside of the die and possibly selected leads. E. Falls within JEDEC MS-026 PowerPAD is a trademark of Texas Instruments Incorporated. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 17 TNETE2201B 1.25-GIGABIT ETHERNET TRANSCEIVER SLLS367A – JUNE 1999 – REVISED AUGUST 1999 MECHANICAL INFORMATION PJD (S-PQFP-G64) PowerPAD PLASTIC QUAD FLATPACK (DIE DOWN) 0,27 0,17 0,50 48 0,08 M 33 49 32 Thermal Pad (See Note D) 64 17 0,13 NOM 1 16 7,50 TYP Gage Plane 10,20 SQ 9,80 12,20 SQ 11,80 0,25 0,15 0,05 1,05 0,95 0°– 7° 0,75 0,45 Seating Plane 0,08 1,20 MAX 4147703/A 12/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions include mold flash or protrusions. The package thermal performance may be enhanced by attaching an external heat sink to the thermal pad. This pad is electrically and thermally connected to the backside of the die and possibly selected leads. E. Falls within JEDEC MS-026 PowerPAD is a trademark of Texas Instruments Incorporated. 18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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