Multimode 155Mbps Optical Transceiver SFP with Digital Diagnostic

Transcription

1 P P P PBoB 9 P PBINB 83 5 Multimode 155Mbps Optical Transceiver Features Compliant with SFP MSA and SFF8472(Rev 9.3) SFF8472 Digital Diagnostic Monitoring Interface with real time monitors Transmitter Output Power Receiver Input Power Laser Bias Current Temperature Supply Voltage Internal calibration for Digital Diagnostic Monitoring Alarms and warnings to indicate status of real time monitors Metal case & LC duplex receptacle with bail delatch Transmitter disable input and receiver loss of signal output Wide operating temperature range 4 ~85 Single 3.3V power supply AC coupled LVPECL compatible data input and output 2wire serial EEPROM protocol Specifications Parameter Symbol Min. Typ. Max. Unit Transmitter Data Rate (NRZ) B Mb/s Optical Output Power (avg.) P (1) (2) 1 3 dbm Extinction Ratio ER 8.3 db Optical Wavelength λbcb nm Spectral Width (RMS) Δλ.85 nm Output Rise Time (19%) tbrb Output Fall Time (19%) tbfb.4 1 ns ns VBiB Data Differential Input Voltage 24 mvbppb TX Fault Output Voltage VBFOLB VBFOHB Vcc V TX Disable Input Voltage VBDILB.8 VBDIHB 2 Vcc V Supply Voltage Vcc V Supply Current Icc 15 ma Receiver Data Rate (NRZ) B Mb/s Optical Input Sensitivity (avg.) P (1) (4) dbm Saturation (avg. power) PBSATB dbm Optical Wavelength λ nm Output Rise Time (19%) tbrb Output Fall Time (19%) tbfb ns ns

2 P Multimode 155Mbps Optical Transceiver Parameter Symbol Min. Typ. Max. Unit Data Differential Output Voltage VBoB LOS Deasserted Power Level (avg.) PBAB LOS Asserted Power Level (avg.) PBDB 2 mvbppb 32 dbm dbm LOS Hysteresis PBHYSB.5 3 db VBLOSOLB.4 LOS Output Voltage V VBLOSOHB 2.4 Vcc Supply Voltage Vcc V Supply Current Icc 13 ma Notes: (1) With.275 NA, 62.5/125μm fiber. (2) Driven with a differential signal. (3) Eye mask diagram is compliant to ITUT G.957 Eye Diagram (4) 2P PRBS, BER= 1P P. (5) The transmitter output should not be viewed directly. Absolute Maximum Ratings Parameter Min. Max. Unit Operating Temperature 4 85 C Storage Temperature 4 1 C Lead Soldering Limits 24/1 C /sec Supply Voltage.5 4 V Digital Diagnostic Monitor Characteristics Parameter Min. Unit Transceiver Internal Temperature Accuracy ±3. C Transceiver Internal Supply Voltage Accuracy ±3 % TX Laser Bias Current Accuracy ±1 % TX Average Output Power Accuracy ±3. db RX Average Input Power Accuracy ±3. db Timing of Control and Status I/O Parameter Symbol Min. Max. Unit Condition TX Disable Assert Time from rising edge of TX Disable to when the t_off 1 μ s Time optical output falls below 1% of nominal. Time from falling edge of TX Disable to when the TX Disable Negate t_on 1 ms modulated optical output rises above 9% of Time nominal. Time to initialize, including reset of TX_Fault t_init 3 ms From power on or negation of TX Fault using TX Disable. TX Fault Assert Time t_fault 1 μ s Time from fault to TX fault on. TX Disable to reset t_reset 1 Time TX Disable must be held high to reset μ s TX_fault. LOS Assert Time t_loss_on 1 μ s Time from LOS state to RX LOS assert. LOS Deassert Time t_loss_off 1 μ s Time from nonlos state to RX LOS deassert. Serial ID Clock Rate f_serial_clock 1 khz 2

3 Ordering Information T R 8 5 M M 1 1 V L C 3 M R 1 F D Outline Drawing Operating Temperature Range: 1: C ~ 7 C 2:4 C ~ 85 C UNIT:mm 3

4 SFP Transceiver Electrical Pad Layout Pin2 VeeT Pin 1 VeeT Pin19 Pin18 Pin17 Pin16 Pin15 Pin14 TD Pin 2 TD+ Pin 3 VeeT Pin 4 VccT Pin 5 VccR Pin 6 VeeR Pin 7 TX Fault TX Disable MODDEF2 MODDEF1 MODDEF NC Pin13 RD+ Pin 8 LOS Pin12 RD Pin 9 VeeR Pin11 VeeR Pin1 VeeR Top View of Transceiver Bottom View of Transceiver 4

5 Pin Description Pin No. Symbol Description 1 VeeT Transmitter Ground 2 TX Fault Transmitter Fault Indication Logic Low indicates normal operation. Logic High Indicates a laser fault of some kind. TX Fault is an open drain output, which should be pulled up with a 4.7K 1KΩ resistor on the host board. Transmitter Disable 3 TX Disable Its states are: Low (.8V) 5 :Transmitter on (>.8, < 2.V) :Undefined High ( V) :Transmitter Disabled Open :Transmitter Disabled It is pulled up within the module with a 4.7K 1 K.Ω resistor. Module Definition 2 (SDA) 4 The data line of two wire serial interface for serial ID. MODDEF2 MODDEF2 should be pulled up with a 4.7K 1KΩ resistor on the host board. The pullup voltage shall be VccT or VccR. Module Definition 1 (SCL) 5 The clock line of two wire serial interface for serial ID. MODDEF1 MODDEF1 should be pulled up with a 4.7K 1KΩ resistor on the host board. The pullup voltage shall be VccT or VccR. 6 Module Definition (WP) MODDEF MODDEF is grounded by the module to indicate that the module is present. 7 NC Not connected 8 LOS Loss of Signal Logic High indicates the received optical power is below the worstcase receiver sensitivity. Logic Low indicates normal operation. LOS is an open drain output, which should be pulled up with a 4.7K 1KΩ resistor on the host board. 9 VeeR Receiver Ground 1 VeeR Receiver Ground 11 VeeR Receiver Ground 12 RD Inv. Received Data Out (Note 1) 13 RD+ Received Data Out (Note 1) 14 VeeR Receiver Ground 15 VccR Receiver Power Supply 16 VccT Transmitter Power Supply 17 VeeT Transmitter Ground 18 TD+ Transmitter Data In (Note 2) 19 TD Inv. Transmit Data In (Note 2) 2 VeeT Transmitter Ground Notes: 1. RD+ and RD are AC coupled 1Ω differential lines which should be terminated with 1Ω (differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board. The voltage swing on these lines will be between 37 and 2 mv differential (185 1 mv single ended) when properly terminated.

6 2. TD+ and TD are ACcoupled, differential lines with 1Ω differential termination inside the module. The AC coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 5 24 mv (25 12 mv singleended), though it is recommended that values between 5 and 12 mv differential (25 6 mv singleended) be used for best EMI performance. Recommended Host Board Supply Filtering Network VccT.1uF 1uH VccR.1uF 1uF 1uH.1uF 1uF 3.3V SFP Module Host Board Example SFP Host Board Schematic Protocol Vcc Protocol Vcc 3.3V 1uH Vcc,T SFP Module 4.7K [ to 1K [ 1uF.1uF 1uH.1uF 4.7K [ to 1K [ TX Disable TX Fault TX Disable TX Fault TD+.1uF TD 1 [ Laser Driver LD Protocol IC SerDes IC 4.7K [ to 1K [ GND,T Vcc,T.1uF 1uF.1uF RD+.1uF 1 [ Preamp & Quantizer PD RD RX LOS 3.3V RX LOS GND,R.1uF 4.7K [ to 1K [ 4.7K [ to 1K [ 4.7K [ to 1K [ MODDEF MODDEF1 MODDEF2 PLD/PAL 6

7 Memory Map 7

8 EEPROM Serial ID Memory Contents (Ah) Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII A Note Note T R Note D M D M Note Note1 47 2D Note Note V C L C A P 53 4D M P R F O Note I F E N T E C 6 Note H 61 Note1 93 B Note2 95 Note Notes: 1. Data will vary depends on product. 2. Addresses 63 is check sum of bytes 62. Addresses 95 is check sum of bytes These addresses are reserved for serial number information. 4. These addresses are reserved for date code information. 5. The data transfer protocol and complete description of Ah memory contents are defined in SFP MSA and SFF

9 Digital Diagnostic Multimode 155Mbps Optical Transceiver Alarm and Warning Thresholds (2Wire Address A2h) Address #Bytes Name Description Value 1 2 Temp High Alarm MBS at low address 1 C 23 2 Temp Low Alarm MBS at low address 4 C 45 2 Temp High Warning MBS at low address +85 C 67 2 Temp Low Warning MBS at low address 35 C 89 2 Voltage High Alarm MBS at low address 3.9V Voltage Low Alarm MBS at low address 2.7V Voltage High Warning MBS at low address 3.63V Voltage Low Warning MBS at low address 2.97V Bias High Alarm MBS at low address 1mA Bias Low Alarm MBS at low address 1mA Bias High Warning MBS at low address 9mA Bias Low Warning MBS at low address 1mA TX Power High Alarm MBS at low address Note TX Power Low Alarm MBS at low address Note TX Power High Warning MBS at low address Note TX Power LOW Warning MBS at low address Note RX Power High Alarm MBS at low address Note RX Power Low Alarm MBS at low address Note RX Power High Warning MBS at low address Note RX Power Low Warning MBS at low address Note Reserved for future monitored Reserved quantities. Note:Data value will vary depends on product. 9

10 Calibration constants for External Calibration Option (2Wire Address A2h) Value Address #Bytes Name Description (Note) Rx_PWR(4) Rx_PWR(3) Rx_PWR(2) Rx_PWR(1) Rx_PWR() Tx_I(Slope) Tx_I(Offset) Tx_PWR(Slope) Tx_PWR(Offset) T (Slope) T (Offset) V (Slope) V (Offset) Single precision floating point calibration data Rx optical power. Single precision floating point calibration data Rx optical power. Single precision floating point calibration data, Rx optical power. Single precision floating point calibration data, Rx optical power. Single precision floating point calibration data, Rx optical power. Fixed decimal (unsigned) calibration data, laser bias current. Fixed decimal (signed two s complement) calibration data, laser bias current. Fixed decimal (unsigned) calibration data, transmitter coupled output power. Fixed decimal (signed two s complement) calibration data, transmitter coupled output power. Fixed decimal (unsigned) calibration data, internal module temperature. Fixed decimal (signed two s complement) calibration data, internal module temperature. Fixed decimal (unsigned) calibration data, internal module supply voltage. Fixed decimal (signed two s complement) calibration data, internal module supply voltage Reserved Reserved 95 1 Checksum Byte 95 contains the low order 8 bits of the sum of bytes 94. Notes:The device is internally calibrated. 1

11 P future P future P future P future Multimode 155Mbps Optical Transceiver A/D Values and Status Bits (2Wire Address A2h) Byte Bit Name Description Converted analog values. Calibrated 16 bit data. 96 All Temperature MSB 97 All Temperature LSB 98 All Vcc MSB 99 All Vcc LSB Internally measured module temperature. Internally measured supply voltage in transceiver. 1 All TX Bias MSB Internally measured TX Bias Current 11 All TX Bias LSB 12 All TX Power MSB Measured TX output power. 13 All TX Power LSB 14 All RX Power MSB Measured RX input power. 15 All RX Power LSB 16 All Reserved MSB st Reserved for 1P definition of digitized analog input 17 All Reserved LSB st Reserved for 1P definition of digitized analog input 18 All Reserved MSB nd Reserved for 2P definition of digitized analog input 19 All Reserved LSB nd Reserved for 2P definition of digitized analog input Optional Status/Control Bits 11 7 Tx Disable State Digital state of the TX Disable Input Pin. Read/write bit that allows software 11 6 Soft Tx Disable disable of laser. It is not implemented, the transceiver ignores the value of this bit Reserved Reserved 11 4 RX Rate Select State Digital state of the SFP RX Rate Select Input Pin. Read/write bit that allows software RX 11 3 Soft RX Rate Select rate select. It is not implemented TX Fault Digital state of the TX Fault Output Pin LOS Digital state of the LOS Output Pin. 11 Data_Ready_Bar Indicates transceiver has achieved power up and data is ready Reserved Reserved 11

12 Alarm and Warning Flag Bits (2Wire Address A2h) Byte Bit Name Description Reserved Optional Alarm and Warning Flag Bits Temp High Alarm Set when internal temperature exceeds high alarm level Temp Low Alarm Set when internal temperature is below low alarm level Vcc High Alarm Set when internal supply voltage exceeds high alarm level Vcc Low Alarm Set when internal supply voltage is below low alarm level TX Bias High Alarm Set when TX Bias current exceeds high alarm level TX Bias Low Alarm Set when TX Bias current is below low alarm level TX Power High Alarm Set when TX output power exceeds high alarm level. 112 TX Power Low Alarm Set when TX output power is below low alarm level RX Power High Alarm Set when Received Power exceeds high alarm level RX Power Low Alarm Set when Received Power is below low alarm level Reserved Alarm Reserved Alarm Reserved Alarm Reserved Alarm Reserved Alarm 113 Reserved Alarm 114 All Reserved 115 All Reserved Temp High Warning Set when internal temperature exceeds high warning level Temp Low Warning Set when internal temperature is below low warning level Vcc High Warning Set when internal supply voltage exceeds high warning level Vcc Low Warning Set when internal supply voltage is below low warning level TX Bias High Warning Set when TX Bias current exceeds high warning level TX Bias Low Warning Set when TX Bias current is below low warning level TX Power High Warning Set when TX output power exceeds high warning level. 116 TX Power Low Warning Set when TX output power is below low warning level RX Power High Warning Set when Received Power exceeds high warning level RX Power Low Warning Set when Received Power is below low warning level Reserved Warning Reserved Warning Reserved Warning Reserved Warning Reserved Warning 117 Reserved Warning 118 All Reserved 12

13 Vendor Specific Memory Addresses (2Wire Address A2h) Byte Bit Name Description All Vendor Specific Vendor Specific User EEPROM (2Wire Address A2h) Address #Bytes Name Description User EEPROM User writable EEPROM Vendor Specific Vendor specific control functions Appointech, Inc. 6F2, NO.192 TungKuan Rd., Hsinchu, Taiwan, R.O.C. TEL: FAX: sales@appointech.com US Office: Versatek, Inc. TEL:(714) FAX:(714)