FPS CL Burst Mode SFF BIDI EPON ONU TRANSCEIVER(20Km)

Transcription

1 FEATURES Dual Wavelength Bi-Directional Tx/Rx 1.25Gbps/1310nm Burst Mode Transmitter 1.25Gbps/1490nm CW Mode Receiver IEEE 802.3ah Compliant Single 3.3 Voltage Supply 2X10 SFF Package Outline Single Fiber Duplex Operation APPLICATIONS Gigabit Ethernet Access Networks Fiber to the Home, Curb, Office(FTTX) Point to Multi Point Service(P2MP) Up to 10km Reach (16:1 Split) Up to 20km Reach (8:1 Split) Absolute Maximum Ratings Parameter Symbol Min. Max. Units Note Storage Temperature Ts Power Supply Voltage Vcc 0 4 V Soldering Temperature seconds on leads only Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Units Power Supply Voltage Vcc V Operating Temperature Top 0 70 Data Rate 1250 Mbps Power Supply Current Icc ma - 1 -

2 Transmitter Specifications (0 o C < Top < 70 o C, 3.13V < Vcc < 3.47V) Parameter Symbol Min. Typ. Max. Units Optical Optical Transmit Power Pout 0 4 dbm Electrical Background Light BDL -45 dbm Optical Center Wavelength nm Output Spectrum Width ΔλRMS Meets for IEEE 802.3ah PX10-U transmitter spectral limits (Maximum allowed RMS spectral width) Extinction Ratio E R db Optical Rise/Fall Time t r / t f 0.26 ns Optical Isolation 30 db Optical Return Loss 12 db Relative Intensity Noise RIN -115 db/hz Total Jitter TJ ns Data Input Current Low -350 ma Data Input Current High 350 ma Differential Input Voltage V IH -V IL mv Data Input Voltage Low V IL - V CC V Data Input Voltage -- High V IH - V CC V DC-Bias Disable Input Voltage -- Low V TDIS,L V - 2 -

3 DC-Bias Enable Input Voltage -- High V TDIS,H V TX DC-Bias Shut-off time t dc,off 20 ns TX DC-Bias Shut-on time t dc,on 20 ns TX Shut down time T sdwn 30 s Receiver Specifications (0 o C < Top < 70 o C, 3.13 V < Vcc < 3.47V) Parameter Symbol Min. Typ. Max. Units Optical Sensitivity Sen -27 dbm Maximum Input Power(Saturation) P MAX -3 dbm Signal Detect -- Asserted P a -26 dbm Signal Detect -- Deasserted P d -42 dbm Signal Detect -- Hysteresis P hys 1.0 db Wavelength of Operation λ nm Electrical Data Output Voltage Low V IL V CC V Data Output Voltage High V IH V CC V Signal Detect Output Voltage-- Low V SIL 0.8 V Signal Detect Output Voltage-- High V SIL 2.0 V - 3 -

4 Digital Diagnostic Memory map EEPROM Serial ID Memory Contents Accessing Serial ID Memory uses the 2 wire address X (A0). Memory Contents of Serial ID are shown in the Table 1. Table 1: Serial ID Memory Contents Data Size Address (Bytes) Name of Field Contents(Hex) Description BASE ID FIELDS 0 1 Identifier 02 Module/connector soldered to motherboard 1 1 Ext.Identifier 04 SFF 2 1 Connector 01 SC Connector Transceiver Encoding 01 8B10B 1000BASE-PX20-4 -

5 12 1 BR,Nominal 0D 1.25Gbit/sec 13 1 Reserved Length(9um)km Length(9um) C Length(50um) 00 Transceiver transmit distance: 20Km 17 1 Length(62.5um) Length(Copper) 00 Not compliant 19 1 Reserved Vendor name 42 4F 54 4F 4E BOTONE (ASCII) Reserved Vendor OUI Vendor PN Transceiver part number Vendor rev Wavelength 05 1E Transceiver wavelength :1310nm 62 1 Reserved CC_BASE Check Sum (Variable) Check code for Base ID Fields EXTENDED ID FIELDS Options 00 0C TX_FAULT and RX_SD is implemented BR,max 0A 10% 67 1 BR,min 0A 10% Vendor SN Serial Number of transceiver (ASCII). For example Date code Manufactory date code. For example Digital diagnostic monitoring implemented, Diagnostic 68 internal calibrated is implemented, RX Monitoring Type measurement type is Average Power Optional Alarm/Warning flags implemented for all Enhanced C0 monitored quantities, Optional Soft TX_Disable Options monitoring implemented, 94 1 SFF_ Includes functionality described in Rev

6 Compliance SFF CC_EXT Check Sum (Variable) Check sum for Extended ID Field. VENDOR SPECIFIC ID FIELDS Vendor Specific Read only Depends on customer information Reserved Read only Filled by zero Diagnostic Monitor Functions Diagnostic Monitor Functions interface uses the 2 wire address X (A2). Memory contents of Diagnostic Monitor Functions are shown in Table 2 Table 2: Memory contents of Diagnostic Monitor Function Data Address Field Size (bytes) Name Contents and Description Alarm and Warning Thresholds Temperature High Alarm Set to Temperature Low Alarm Set to Temperature High Warning Set to Temperature Low Warning Set to Vcc High Alarm Set to 3.6 V Vcc Low Alarm Set to 3.0 V Vcc High Warning Set to 3.5 V Vcc Low Warning Set to 3.1 V Bias High Alarm 70mA Bias Low Alarm 2mA Bias High Warning 60mA Bias Low Warning 4mA TX Power High Alarm 6dBm TX Power Low Alarm -2dBm TX Power High Warning 4dBm TX Power Low Warning 0dBm RX Power High Alarm 0dBm RX Power Low Alarm -30dBm RX Power High Warning -3dBm RX Power Low Warning -27dBm - 6 -

7 Reserved Calibration Constants RX Power Calibration Data (fixed) RX Power Calibration Data (fixed) RX Power Calibration Data (fixed) RX Power Calibration Data1 3F (fixed) RX Power Calibration Data (fixed) Bias Calibration Data (fixed) Bias Calibration Data (fixed) TX Power Calibration Data (fixed) TX Power Calibration Data (fixed) Temperature Calibration Data (fixed) Temperature Calibration Data (fixed) Vcc Calibration Data (fixed) Vcc Calibration Data (fixed) Reserved (fixed) 95 1 Check Sum Checksum of bytes 0-94 Real Time Diagnostic Monitor Interface Measured Temperature Yield to a 16-bit A/D value (see Table 2.1) Measured Vcc Yield a 16-bit A/D value (see Table 2.1) Measured Bias Yield a 16-bit A/D value (see Table 2.1) Measured TX Power Yield a 16-bit A/D value (see Table 2.1) Measured RX Power Yield a 16-bit A/D value (see Table 2.1) Reserved Logic Status See Table AD Conversion Updates See Table Alarm and Warning Flags See Table 2.3 Vendor Specific Vendor Specific Don t Access User writable EEPROM Vendor Specific Don t Access The measured values located at bytes (in the 2 wire address 0xA2) are raw A/D values (16-bit integers) of transceiver temperature, supply voltage, laser bias current, laser optical output power and received power. All the measured values are Externally Calibrated, and then it is necessary to convert raw A/D values to real world units by the manner as shown in Table

8 Table 2.1: Real Time Diagnostic Monitor Values Byte Name Description 96 Temperature MSB Internally measured transceiver temperature. Comply with 97 Temperature LSB External Calibration of SFF Vcc MSB Internally measured supply voltage. Comply with External 99 VCC LSB Calibration of SFF Laser Bias MSB Measured Laser bias current. Comply with External Calibration of 101 Laser Bias MSB SFF Tx Power MSB Measured Tx power. Comply with External Calibration of 103 TX Power LSB SFF Rx Power MSB Measured Tx power. Comply with External Calibration of 105 RX Power LSB SFF This transceiver implements two optional status bytes, Logic States at byte 110(0xA2) and A/D Updated at byte 111(0xA2) as shown in Table 3.2. A/D Updated status bits allow the user to verify if an update from the analog-digital conversion has occurred of the measured values, temperature, Vcc, laser bias, Tx power and Rx power. The user writes the byte to 0x00. Once a conversion is completed for a given value, its bit will change to 1. Table 2.2: Logic Status and AD Conversion Updates Byte Bit Name Description Tx Disable State Not supported (set to 0) Soft Tx Disable Control 1=Disable, 0=Enable Reserved Set to Rx Rate Select State Not supported (set to 1) Soft Rate Select Control Not supported (set to 0) Tx Fault Not supported (set to 0) LOS Not supported (set to 0) Power on Logic Bit will be 0 when the analog monitoring is active ~0 Temp A/D Valid Set to 0 Each of the measured values has a corresponding high alarm, low alarm, high warning and low warning - 8 -

9 threshold level at location 00-39(x0A2) written as the data format of a corresponding valued shown in Table 2.3.Alarm and warning flags at bytes (0xA2) are defined as follows. [1] Alarm flags indicate conditions likely to result (or have resulted) in link failure and cause for immediate action. [2] Warning flags indicate conditions outside the guaranteed operating specification of transceiver but not necessarily causes of immediate link failures. Table 2.3:Alarm and Warning Flags Byte Bit(s) Name Description Temperature High Alarm Set when temperature monitor value exceeds high alarm level Temperature Low Alarm Set when temperature monitor value exceeds low alarm level Vcc High Alarm Set when Vcc monitor value exceeds high alarm level Vcc Low Alarm Set when Vcc monitor value exceeds Low alarm level Laser Bias High Alarm Set when laser bias monitor value exceeds high alarm level Laser Bias Low Alarm Set when laser bias monitor value exceeds low alarm level Tx Power High Alarm Set when Tx power monitor value exceeds high alarm level Tx Power Low Alarm Set when Tx power monitor value exceeds low alarm level Rx Power High Alarm Set when Rx power monitor value exceeds high alarm level Rx Power Low Alarm Set when Rx power monitor value exceeds low alarm level Reserved All bits set to Reserved All bits set to Reserved All bits set to Temperature High Set when temperature monitor value exceeds high warning warning level Temperature Low Set when temperature monitor value exceeds low warning warning level Vcc High warning Set when Vcc monitor value exceeds high warning level Vcc Low warning Set when Vcc monitor value exceeds Low warning level Laser Bias High warning Set when laser bias monitor value exceeds high warning level Laser Bias Low warning Set when laser bias monitor value exceeds low warning level

10 116 1 Tx Power High warning Set when Tx power monitor value exceeds high warning level Tx Power Low warning Set when Tx power monitor value exceeds low warning level Rx Power High warning Set when Rx power monitor value exceeds high warning level Rx Power Low warning Set when Rx power monitor value exceeds low warning level Reserved All bits set to Reserved All bits set to Reserved All bits set to 0..PIN ASSIGNMENT Pin Name Function/Description 1 NC No function definition 2 RX GND Receiver ground 3 RX GND Receiver ground 4 NC No function definition 5 NC No function definition 6 RX GND Receiver ground 7 RX Vcc Receiver power supply 8 SD LVTTL Signal detect output, internally pull up. Asserts high when input optical power level is above threshold. 9 RD- Receiver data output-, AC coupled internally. 10 RD+ Receiver data output+, AC coupled internally. 11 TX Vcc Transmitter power supply. 12 TX GND Transmitter ground

11 13 TX EN LVTTL transmitter burst mode control, L : TX ON. 14 TD+ LVPECL data input+, AC coupled internally. 15 TD- LVPECL data input-, AC coupled internally. 16 TX GND Transmitter ground. 17 SCL I 2 C serial clock (LVTTL) 18 SDA I 2 C serial data (LVTTL) 19 TX_FAULT LVTTL transmitter Fault, internally pull up, Assert high when the fault is detected by the laser driver. 20 TX_SD TX Transmitter State indication, TX_Indication high when transmitter ON Block Diagram

12 Typical Application Circuit

13 PACKAGE DIAGRAM (Units in mm)

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