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    1000BASE-T Copper SFP Transceiver

    1000BASE-T Copper compatible SFP Transceiver

    1000BASE-T Copper 100m RJ45 SFP Module,fully tested compatible for over 100 vendors.

    Features

    * Up to 1.25Gb/s bi-directional data links

    * Hot-pluggable SFP footprint

    * Extended case temperature range (0°C to +70°C )

    * Fully metallic enclosure for low EMI

    * Low power dissipation (1.05 W typical)

    * Compact RJ-45 connector assembly

    * Access to physical layer IC via 2-wire serial bus

    * 1000BASE-T operation in host systems with SERDES interface

    * 10/100/1000Mbps compliant in host systems with SGMII interface

     

     

    Applications

    * 1.25 Gigabit Ethernet over Cat cable

     

     

    Description

    The Copper Small Form Pluggable (SFP)transceivers is high performance, cost effective module compliant with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE 802. 3-2002 and IEEE 802.3ab, which supporting 1000Mbps data- rate up to 100 meters reach over unshielded twisted-pair category 5 cable. The module supports 1000Mbps full duplex data-links with 5-level Pulse Amplitude Modulation (PAM) signals. All four pairs in the cable are used with symbol rate at 250Mbps on each pair. The module provides standard serial ID information compliant with SFP MSA, which can be accessed with address of A0h via the 2wire serial CMOS EEPROM protocol. The physical IC can also be accessed via 2wire serial bus at address A0h.

    Pin Descriptions

     

    Pin

    Signal Name

    Description

    Plug Seq.

    Notes

    1

    VEET

    Transmitter Ground

    1

     

    2

    TX FAULT

    Transmitter Fault Indication

    3

    Note1

    3

    TX DISABLE

    Transmitter Disable

    3

    Note2

    4

    MOD_DEF(2)

    SDA Serial Data Signal

    3

    Note3

    5

    MOD_DEF(1)

    SCL Serial Clock Signal

    3

    Note3

    6

    MOD_DEF(0)

    TTL Low

    3

    Note3

    7

    Rate Select

    Not Connected

    3

     

    8

    LOS

    Loss of Signal

    3

    Note 4

    9

    VEER

    Receiver ground

    1

     

    10

    VEER

    Receiver ground

    1

     

    11

    VEER

    Receiver ground

    1

     

    12

    RX-

    Inv. Received Data Out

    3

    Note 5

    13

    RX+

    Received Data Out

    3

    Note 5

    14

    VEER

    Receiver ground

    1

     

    15

    VCCR

    Receiver Power Supply

    2

     

    16

    VCCT

    Transmitter Power Supply

    2

     

    17

    VEET

    Transmitter Ground

    1

     

    18

    TX+

    Transmit Data In

    3

    Note 6

    19

    TX-

    Inv. Transmit Data In

    3

    Note 6

    20

    VEET

    Transmitter Ground

    1

     

     

    Notes:

    Plug Seq.: Pin engagement sequence during hot plugging.

    1) TX Fault is an open collector output, which should be pulled up with a 4.7k~10kΩ resistor on the host board to a voltage between 2.0V and Vcc+0.3V. Logic 0 indicates normal operation; logic 1 indicates a laser fault of some kind. In the low state, the output will be pulled to less than 0.8V.

    2) TX Disable is an input that is used to shut down the transmitter optical output. It is pulled up within the module with a 4.7 ¨C 10 K resistor. Its states are:

    Low (0 to 0.8V):             Transmitter on

    (>0.8, < 2.0V):               Undefined

    High (2.0 to 3.465V):         Transmitter Disabled

    Open:                      Transmitter Disabled

    3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a  4.7K to 10K resistor on the host board. The pull-up voltage shall be VccT or VccR

    Mod-Def 0 is grounded by the module to indicate that the module is present

    Mod-Def 1 is the clock line of two wire serial interface for serial ID

    Mod-Def 2 is the data line of two wire serial interface for serial ID

    4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K to 10K resistor. Pull up voltage between 2.0V and VccT, R+0.3V. When high, this output indicates the received optical power is below the worst-case receiver sensitivity (as defined by the standard in use). Low indicates normal operation. In the low state, the output will be pulled to <0.8V.

    5) RD-/+: These are the differential receiver outputs. They are AC coupled 100 differential lines which should be terminated with 100  (differential) at the user SERDES.

    6) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100 differential termination inside the module.

    +3.3V Volt Electrical Power Interface

    The BT-SFP-T has an input voltage range of +5V +/- 5%. The 3.3V maximum voltage is not allowed for continuous operation.

     

    Table 1. +3.3V Volt electrical power interface

    +3.3V volt Electrical Power Interface

    Parameter

    Symbol

    Min

    Typ

    Max

    Units

    Notes/Conditions

    Supply Current

    Is

     

    320

    375

    mA

    1.2W max power over full range of voltage and temperature.

    See caution note below

    Input Voltage

    Vcc

    3.13

    3.3

    3.47

    V

    Referenced to GND

    Maximum Voltage

    Vmax

     

     

    4

    V

     

    Surge Current

    Isurge

     

     

    30

    mA

    Hot plug above steady state current. See caution note below

    Caution: Power consumption and surge current are higher than the specified values in the SFP MSA

     

     

    Low-Speed Signals

    MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see section VII, “Serial Communication Protocol”). Both MOD_DEF(1) and MOD_DEF(2) must be pulled up to host_Vcc.

    Table 2. Low-speed signals, electronic characteristics

    Low-Speed Signals, Electronic Characteristics

    Parameter

    Symbol

    Min

    Max

    Units

    Notes/Conditions

    SFP Output LOW

    VOL

    0

    0.5

    V

    4.7k to 10k pull-up to host_Vcc, measured at host side of connector

    SFP Output HIGH

    VOH

    host_Vcc - 0.5

    host_Vcc + 0.3

    V

    4.7k to 10k pull-up to host_Vcc, measured at host side of connector

    SFP Input LOW

    VIL

    0

    0.8

    V

    4.7k to 10k pull-up to Vcc, measured at SFP side of connector

    SFP Input HIGH

    VIH

    2

    Vcc + 0.3

    V

    4.7k to 10k pull-up to Vcc, measured at SFP side of connector

     

     

    High-Speed Electrical Interface

    All high-speed signals are AC-coupled internally.

    Table 3. High-speed electrical interface, transmission line-SFP

    High-Speed Electrical Interface Transmission Line-SFP

    Parameter

    Symbol

    Min

    Typ

    Max

    Units

    Notes/Conditions

    Line Frequency

    fL

     

    125

     

    MHz

    5-level encoding, per IEEE 802.3

    Tx Output Impedance

    Zout,TX

     

    100

     

    Ohm

    Differential, for all Frequencies between 1MHz and 125MHz

    Rx Input Impedance

    Zin,RX

     

    100

     

    Ohm

    Differential, for all Frequencies between 1MHz and 125MHz

     

     

    High-speed electrical interface, host-SFP

     

    Table 4. High-speed electrical interface, host-SFP

    High-Speed Electrical Interface, Host-SFP

    Parameter

    Symbol

    Min

    Typ

    Max

    Units

    Notes/Conditions

    Single ended data input swing

    Vinsing

    250

     

    1200

    mV

    Single ended

    Single ended data output swing

    Voutsing

    350

     

    800

    mV

    Single ended

    Rise/Fall Time

    Tr,Tf

     

    175

     

    psec

    20%-80%

    Tx Input Impedance

    Zin

     

    50

     

    Ohm

    Single ended

    Rx Output Impedance

    Zout

     

    50

     

    Ohm

    Single ended

     

     

    General Specifications

     

    Table 5. General specifications

    General

    Parameter

    Symbol

    Min

    Typ

    Max

    Units

    Notes/Conditions

    Data Rate

    BR

    10

     

    1,000

    Mb/sec

    IEEE 802.3 compatible.

    See Notes 2 through 4 below

    Cable Length

    L

     

     

    100

    m

    Category 5 UTP. BER <10-12

     

    Notes:

    1. Clock tolerance is +/- 50 ppm
    2. By default, the BT-SFP-T is a full duplex device in preferred master mode
    3. Automatic crossover detection is enabled. External crossover cable is not required
    4. 1000 BASE-T operation requires the host system to have an SGMII interface with no clocks, and the module PHY to be configured per Application Note AN-2036. With a SERDES that does not support SGMII, the module will operate at 1000BASE-T only.

     

    Environmental Specifications

     

    Table 6. Environmental specifications

    Environmental Specifications

    Parameter

    Symbol

    Min

    Typ

    Max

    Units

    Notes/Conditions

    Operating Temperature

    Top

    0

     

    70

    °C

    Case temperature

    Storage Temperature

    Tsto

    -40

     

    85

    °C

    Ambient temperature

     

    References

    1. Gigabit Interface Converter (SFP) Transceiver Multi-Source Agreement (MSA),
    2. IEEE Std 802.3, 2002 Edition. IEEE Standards Department, 2002.
    3. “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM”, Atmel Corporation.
    4. “Alaska Ultra 88E1111 Integrated 10/100/1000 Gigabit Ethernet Transceiver”,Marvell Corporation.

     

     

    Mechanical Specifications

    The host-side of the copper sfp conforms to the mechanical specifications outlined in the SFP MSA1. The front portion of the SFP (part extending beyond the face plate of the host) is larger to accommodate the RJ-45 connector.

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