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74740-0002中文资料

Features and Benefits

1000Base-T compliant, meets IEEE802.3z, ab specifications and is GBIC SFF-8053 Rev 5.5 compliant –For improved intermatability 1.63 Watt power requirement –Low heat output

Hot pluggable –Eliminates need to power down to remove or install transceiver

Zinc back shells –Improved EMI performance Auto-negotiation –Allows networking

equipment to automatically determine and adjust to the required settings

Automatic MDI crossover –Eliminates the need for crossover cables or cross-wired (MDIX) ports

Link monitor –Detects loss of signal

Serial ID –Allows individual identification of each GBIC transceiver

Auto-Power shutdown –Saves energy

Applications

■Networking Equipment -Switches -Routers

Reference Information Packaging: 1

Mates With: GBIC Cage 73847 series

SCA-2 Receptacle 74065 series Electrical Voltage: 5v Current: 350mA

Physical

Zinc Diecast Backshell PCB Thickness: .062”

Operating Temperature: 0 to 70°C

The 1000Base-T RJ-45 Gigabit Ethernet GBIC copper transceiver is a high performance integrated duplex data link for bi-directional communication over Cat-5 copper

cable. The hot pluggable feature allows changing to or from another GBIC compatible module without having to remove system power. Serial ID is included.

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver 74740

FEATURES AND SPECIFICATIONS ORDERING INFORMATION

Order Number Description

74740-0001RJ-45 1000Base-T GBIC Transceiver With Serial ID, Auto Negotiation On LOS GND 74740-0002RJ-45 1000Base-T GBIC Transceiver With Serial ID, Auto Negotiation On LOS Toggle 74740-0003

RJ-45 1000Base-T GBIC Transceiver With Serial ID, Auto Negotiation Off LOS Toggle

FEATURES

Figure 1. RJ-45 GBIC 1000Base-T Application

Host Board

GBIC Interface GBIC Card MAC SERDES (e.g.)TBI

I2C Serial

Interface

1000Base-T

Transceiver BCM5421S T r a n s f o r m e r

RJ-451000Base-T

I2C Serial Interface μC

MDC/MDIO

GBIC Mode

When the internal gigabit Ethernet transceiver (PHY) is configured to GBIC mode, the PHY can interface directly with the host serial/deserial (SERDES) interface. The host interface transmits and receives serial data differentially at 1.25Gbps. The copper interface is full featured and advertises full/half duplex, and 1000Base-T wire speed. Auto-Negotiation

Auto-Negotiation is supported over both the twisted pair copper link and SERDES interface as defined in the IEEE 802.3 standards and is performed as part of the initial set-up of the link. The copper link is negotiated according to the IEEE 802.3 Clause 28, and Clause 37 is used in the negotiation of the SERDES interface. The two interfaces advertise 1000Base-T full-duplex, and master/slave relationships. The master establishes the time control from its local clock source.The slave however recovers the clock from the received data stream. The GBIC application is limited to 1000Base-T wire speed only. Auto-Negotiation on the SERDES link is always restarted when a change is detected on copper link (see Link Monitor and Loss-of-Signal for further details).Automatic MDI Crossover

The 1000Base-T GBIC transceiver performs a MDI crossover during Auto-Negotiation eliminating the need for crossover cables or cross-wired (MDIX) ports.

Loss of Signal -Link Monitor

Following Auto-Negotiation, the master and slave begin sending data over the twisted pair link. The master and slave continuously monitor the copper link for quality of data. The link status bit is set after one microsecond of quality data. If the quality of copper link drops below factory PHY minimums, the GBIC will drop the SERDES link, and assert the LOS I/O interface (optional) in less than 200 milliseconds. Auto Power Savings Mode

When the copper link is lost, the GBIC automatically enters a low power mode reducing the chip power requirements. Full power mode resumes once the copper link is re-established.Not Implemented in GBIC Auto-Negotiation

Next page exchange and detection of remote faults are not auto-negotiated.

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver

1000BASE-T RJ-45 GBIC FEATURES

Auto-Negotiation Features Supported:General:

SERDES Auto-Negotiation is restarted when a change is detected on the copper link Auto power savings mode when copper link is lost Copper RJ-45 Interface: Auto-Negotiation

Copper GBIC speed is 1000Base-T only Full/Half duplex

Automatic MDI Crossover Master/Slave relationships

Pause flow control (see flow charts)Host SERDES Interface:

Differential SERDES Interface at 1.25Gpbs Master/Slave relationships

SERDES recovers the clock from the received data stream Pause flow control (see flow charts)Not Implemented in GBIC Auto-Negotiation: Next page exchange Detect remote fault

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver

AUTO-NEGOTIATION SUMMARY

Routine Start Get Copper Auto-Neg Information

Advertise to SERDES Enable SERDES Interface

Get SERDES Auto-Neg Information

Advertise to Copper

Restart Auto-Neg

Return

Yes

Wait for SERDES Auto-Neg to Complete

Yes

Wait for Copper Auto-Neg to Complete

Yes Wait for

Auto-Neg to Complete

LOS GND

Disable SERDES Interface

Auto-Negotiation

Link Dropout

Main

Yes

Good Copper Link Drop SERDES Link

Restart

Auto-Negotiation

Routine Start

Get SERDES Auto-Neg Information

Advertise to Copper

Get SERDES Auto-Neg Information

Advertise to Copper

Restart Auto-Neg

Return

Yes

Wait for SERDES Auto-Neg to Complete

Yes

Wait for Copper Auto-Neg to Complete

Yes

Wait for

Auto-Neg to Complete

LOS HIGH

Disable SERDES Interface

Link is Good LOS LOW

Auto-Negotiation

Link Dropout

Main

Yes

Good Copper Link Drop SERDES Link

Restart

Auto-Negotiation

LOS HIGH

Auto-Negotiation

Link Dropout

Routine Start

Disable SERDES

Yes

Wait for Copper Auto-Neg to Complete

LOS HIGH

Enable SERDES

Return

Yes

Good Copper Link

Link is Good LOS LOW

Get Copper Auto-Neg Information

Advertise to SERDES

Main

Yes

Good Copper Link

Restart

Auto-Negotiation

LOS HIGH

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver

AUTO-NEGOTIATION SOFTWARE SELECTIONS

Through random I2C read commands, the host can change the auto-negotiation state of the GBIC. When auto-negotiation in the GBIC is off, the GBIC does not automatically query the host and advertise pause flow control on the copper interface. If the host requires advertisement of pause flow control and auto-negotiation is off, the host can set pause, and asymmetric pause using the defined I2C

commands. Serial ID addresses 128-133 are used in the random I2C read commands. The read commands, and GBIC actions are defined in the I2C Command Table. I2C Command Table

I2C Read Address

Description

GBIC Actions

128 ( 0x80 )

GBIC Auto-Negotiation Status

? Return Status Byte ? Turn Auto-Negotiation ON

? Restart Auto-Negotiation ? Return Status Byte ? Turn Auto-Negotiation OFF

? Restart Auto-Negotiation ? Return Status Byte ? Clear P ause Flow Control

? Clear Asymmetric P ause ? Return Status Byte

SE RDE S P ause Flow Control Advertisement

? Set SE RDE S P ause Flow Control Bit

(auto-negotiation off only)

? Return Status Byte

SE RDE S Asymmetric P ause Flow Control

? Set SE RDE S Asymmetric P ause Flow Control Bit (auto-negotiation off only)

? Return Status Byte

129 ( 0x81 )

E nable Auto-Negotiation

130 ( 0x82 )

Disable Auto-Negotiation

131 ( 0x83 )

Clear SE RDE S P ause Flow Control Advertisement

132 ( 0x84 )

133 ( 0x85 )

GBIC Status Byte

Bit Description 7Reserved 6Reserved 5Reserved

4Copper has Advertised Asymmetric P ause 3Copper has Advertised P ause

2Host to Advertise Asymmetric P ause on Copper 1Host to Advertise P ause on Copper

GBIC Auto Negotiation Status 1 = On / 0 = Off

Module Specifications –Recommended Operating Conditions

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver

ACTIVE PERFORMANCE SPECIFICATIONS

PARAME TE RS SYMBOL MIN TYP

MAX UNITS NOTE S

Storage Temperature

Tstg -4085oC Ambient Operating Temperature

Ta 070oC Supply Voltage V DD R, V DD T

4.75

5.25Vdc Vcc-ground

Supply Current Icc 350mA Surge Current

Isurge

Surge above steady state value

GBIC Host Serial Interface (TX/RX)

Data Input/Output Type LVDS, AC coupled

Impedance (SE RDE S Interface)

150ohms

Differential

Transmitter (Input to GBIC)

Input Voltage 4002400mVpp

Receiver (Output to SE RDE S)

Output Voltage 8751525mVpp Max Off Voltage 170mVpp Rise Time, 20%–80%

350ps Total Jitter 192ps Skew

175ps

Link Dropout 74740-0001100

200

msec

From detection of loss of signal to SE RDE S

disable

Loss of Signal Timing 74740-0002, 74740-0003RX_LOS assert delay t_loss_on 100200msec From detection of loss of signal to assertion of

RX_LOS

RX_LOS negate delay

t_loss_off

3.5

sec

From detection of presence of signal to negation

of RX_LOS

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver

RELIABILITY PREDICTION REPORT

Temperature: 75°C

Assembly Name Part Number Failure Rate MTBF 1000Base-T Adapter 74740-xxxx

0.3094353,231,693Active Components 0.1786095,598,828P assive Components

0.130827

7,643,711

IMPEDANCE MATCHING AND POWER SUPPLY FILTERING

Signal inputs/outputs on the GBIC transceiver modules are AC coupled and internally terminated to 75 ohms (TD+, TD-, RD+, RD-). Each leg of the differential pair was equally matched in length. Figure 2 shows the recommended power supply filtering network.

Figure 2: Recommended Host Board Supply Filtering Network

GBIC Module

VccT

VccR

0.1μF

1.0μH

0.1μF 1.0μH

10μF

0.1μF 10μF

1000Base-T RJ-45 Gigabit

Ethernet GBIC Copper

Transceiver

GBIC HOST CONNECTOR PIN DESCRIPTIONS

PIN NAME DE SCRIPTION

P IN 1RX_LOS Receiver Loss of Signal, logic high, open collector compatible, 4.7 K to 10 K Ohm pull-up to V

T on host. See part number chart for details.

P IN 2RGND Receiver Ground

P IN 3RGND Receiver Ground

P IN 4MOD_DEF(0)GBIC module definition and presence, 4.7 K to 10 K Ohm pull-up to V

T on host

P IN 5MOD_DEF(1)Signal SCL (Clock) of the 2-w ire serial ID interface, 4.7 K to 10 K Ohm pull- up to V

T on host, 100KHz maximum clock rate.

P IN 6MOD_DEF(2)Signal SDA (Data) of the 2-w ire serial ID interface, 4.7 K to 10 K Ohm pull- up to V

T on host

P IN 7TX_DISABLE TX_DISABLE is not implemented. Transmitter Disable, logic high, open collector compatible, 4.7 K to 10 K Ohm pull-up to V

T on GBIC.

P IN 8TGND Transmitter Ground P IN 9TGND Transmitter Ground

P IN 10TX_FAULT Transmitter Fault, logic high, open collector compatible, 4.7 K to 10 K Oh pull-up to V

T on host. Not implemented on the RJ-45 GBIC

P IN 11RGND Receiver Ground

P IN 12RX_DATA (-)Receive Data, differential AC coupled P IN 13RX_DATA (+)Receive Data, differential AC coupled P IN 14RGND Receiver Ground

P IN 15V

R Receiver Supply +5.0 Volts

P IN 16V

T Transmitter Supply +5.0 Volts

P IN 17TGND Transmitter Ground

P IN 18TX_DATA (+)Transmit Data, differential AC coupled P IN 19TX_DATA (-)Transmit Data, differential AC coupled P IN 20TGND Transmitter Ground

1000Base-T RJ-45 Gigabit Ethernet GBIC Copper Transceiver

1000BASE-T GBIC DIMENSIONS

Corporate Headquarters 2222 Wellington Ct.Lisle, Illinois 60532 USA 630-969-4550

European Headquarters Munich, Germany 49-89-413092-0eurinfo@https://www.wendangku.net/doc/7610486242.html, Far East South Headquarters Jurong, Singapore 65-6-268-6868fesinfo@https://www.wendangku.net/doc/7610486242.html, Far East North Headquarters Yamato, Kanagawa, Japan 81-462-65-2324feninfo@https://www.wendangku.net/doc/7610486242.html, High Performance Adapter Headquarters 101 Bringler Drive

Maumelle, AE 72113 USA 501-851-4850

amerinfo@https://www.wendangku.net/doc/7610486242.html,

Order No. USA-206 Printed in USA/0K/AJ/2003.10 ?2003, Molex