AFCT-57V6NSZ Small Form Factor Pluggable (SFP) LC Optical Transceiver for 1.25GBd Ethernet at Extended Link Lengths (Up to 40km) Data Sheet Description The AFCT-57V6NSZ transceiver is a specially customised low-cost and hot-pluggable SFP MSA-compliant optical interconnect module for Gigabit Ethernet applications at transmission distances up to 40km [1, 2]. The AFCT-57V6NSZ implements the serial portion of the physical layer, and supports the features shown below The AFCT-57V6NSZ features differential serial I/O interface lines that are AC-coupled signals. Avago’s design of the long wavelength SFP module uses a 1550 nm distributed feedback (DFB) laser diode (LD) and takes advantage of an integrated preamplifier/photo-detector. The AFCT-57V6NSZ also contains transmitter, receiver and control electronics. Singlemode optical fiber, with LC connectors, is recommended as the communication media. The AFCT57V6NSZ has a digital diagnostic monitoring (DDM) function in accordance with SFF-8472 [3] which allows monitoring operating temperature, supply voltage, laser bias current, transmitter optical output power and optical received power in real time via a serial-ID interface. On the following page, Table1 lists the general specifications for the AFCT-57V6NSZ SFP. Features • • • • • • • • • • • • • • • • • Gigabit Ethernet transceiver RoHS Compliant IEEE 802.3z, 1000BASE-ZX Extended transmission distance up to 40 km Compliant with SFP Multi Source Agreement (MSA) Duplex-LC optical interface 1550 nm DFB-LD Serial ID Digital Diagnostic Monitoring interface Bail delatch for easy removal from cage Available in industrial temperature range (-40 to +85°C) Immune to ESD, RF fields, and Vcc noise Designed for very low RF emissions Class 1 laser safety AC-coupled differential serial I/O interface Single +3.3 Volt supply operation Low power dissipation Applications Figure 1 shows a simplified block diagram of the AFCT57V6NSZ electronics. • Ethernet switches Related Products • Broadband aggregation and wireless infrastructure • AFBR-5715Z family: 850 nm 1.25 GBd 3.3 V multimode SFP Gigabit Ethernet transceivers with DMI • AFCT-5715Z: 1.25 GBd Ethernet (1000Base-LX) SFP with DMI • Multi-service switches and routers • Switched backplane applications • High Speed Interface for server farms • Metro access switch GbE connections Digital Diagnostic Monitoring Interface (A2h) SCL SDA Module Definition (A0h) SCL SDA MOD_DEF[1] TD + 100 ohm TD- Modulation Bias Circuit DFB-LD DC Bias Circuit Optical Output Monitor PD APC Circuit TX_DISABLE TX_FAULT Optical Connector MOD_DEF[2] Control Circuit RD + Limiting Amp RD RX_LOS TZ AMP Optical Connector Transmitter PIN-PD Level Detector Receiver VccR VccT VeeR Vcc Slow Start VeT Figure 1. AFCT-57V6NSZ Simplified Block Diagram Table 1. General AFCT-57V6NSZ Specifications Parameter 1000BASE-ZX* unit Nominal Bit Rate 1.25 Gbps Link Loss Budget 17 dB Minimum Required Link Loss 0 dB Bit Error Ratio(BER) <10-12 - Fiber Core Diameter 9 mm Operating Range(max) 40 km † Optical specifications are modified to realize 40 km transmission in singlemode fiber. Optical Input Absolute Maximum Ratings Recommended Operating Conditions Operation of the AFCT-57V6NSZ beyond the Absolute Maximum Ratings listed in Table 2 can degrade or damage the product. With the exception of laser safety, it is not implied that the product will function above the Recommended Operating Conditions. It is possible to reduce the reliability and lifetime of the device if the Recommended Operating Conditions are exceeded (see Table 3). Table 3 lists the conditions under which the AFCT57V6NSZ is tested and should be operated. It is possible to reduce the reliability and lifetime of the device if these ratings are exceeded for extended periods. Functional operation should be restricted to these Recommended Operating Conditions. Table 2. Absolute Maximum Ratings Parameter Symbol Min Max Unit Supply Voltage Vcc -0.3 4.0 V Relative Humidity * RH 5 85 % TX_DISABLE Input Voltage VIN -0.5 Vcc+0.5 V Storage Temperature Ts -40 +85 °C † No condensation Table 3. Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Supply Voltage Vcc 3.135 3.3 3.465 V Ripple And Noise - - - 100 mVp-p Operating Case Temperature AFCT-57V6NSZ AFCT-57V6ANSZ TC TC -5 -40 - 70 85 °C † Measured with a sinusoidal signal from 100 Hz to 2 MHz at the input of the recommended power supply filter shown in Figure 13. Handling Precautions Optical Description Avago advises that precautions be taken to avoid electrostatic discharge (ESD) during handling, assembly, and testing of the AFCT-57V6NSZ. Degradation or damage can occur if proper guidelines for handling ESD sensitive devices are not followed. This could result in an inoperable device or unsafe operation as described above. Table 4 describes the performance of the transmitter portion of the AFCT-57V6NSZ over the operating conditions. Table 5 describes the performance of the receiver portion of the AFCT-57V6NSZ over the operating conditions. In particular, avoid getting particulate or solvent contamination onto the optical surfaces of the laser and photodetector assemblies. It is also strongly recommended that the LC connector receptacle be covered when not in use. Excessive force when installing and extracting the AFCT57V6NSZ should be avoided. Refer to the SFP Application Note [6] for additional handling information. The optical pulse characteristics of the transmitter are specified in the form of an eye pattern. When measured in accordance with [2], the mask shown in Figure 2 evaluates rise time, fall time, overshoot and undershoot. Table 4. Transmitter Optical Specifications Parameter Symbol Min Typ Max Unit Spectral Center Wavelength lC 1500 1550 1580 nm -20dB Spectral Width Dl20 - - 0.5 nm Side Mode Suppression Ratio SMSR 30 - - dB Optical Output Power, Average* PO -4 - 0 dBm Extinction Ratio ER 9 - - dB Rise/Fall Time** Tr/Tf - - 260 ps Total Jitter (TJ) TJ - - 0.28 UI Optical Waveform - Compliant with IEEE 802.3z eye mask (Refer to Figure 2) Disable Optical Output Power - - - -35 dBm Parameter Symbol Min Typ Max Unit Spectral Center Wavelength lC 1270 - 1600 nm Receiver Saturation Pmax 0 - . dBm Minimum Receiver Sensitivity Pmin . - -21 dBm RX_LOS Assert Level LOSA -35 - . dBm RX_LOS De-assert Level LOSD . - -24.5 dBm RX_LOS Hysteresis LOSHYS 0.5 2 . dB Return Loss RL 12 - . dB † SMF 9/125 †† 20 % - 80 % edge rate without filter Table 5. Receiver Optical Specifications † Receiver sensitivity is measured at the center of the eye for BER=1x10-12 using PRBS 2^7-1 130 Normalized Amplitude (%) 100 80 50 20 0 -20 0 22 37.5 62.5 78 Normalized Time (% of Unit Interval) Figure 2. Transmitter Eye Mask 100 Electrical Description The supply current of the AFCT-57V6NSZ is described in Table 6 below. The inrush current is defined as the additional inrush due to hot plugging. The characteristics for the control and status signals are shown in Table 7. Output status signals, TX_FAULT and RX_LOS, are all open-collector/drain, and the levels indicated assuming 4.7k-10k ohm pull-up resistor to Host_Vcc is present. The levels of MOD_DEF[1] and MOD_DEF[2] are also indicated assuming that they are pulled up with a 4.7k-10k ohm resistor to +3.3 V on host board. Table 8 indicates the voltage levels required to be delivered by the host to the transmitter differential serial data input TD+/-. Table 9 indicates the voltage level output from the receiver differential serial data output RD+/-. Table 6. Electrical Characteristics Parameter Symbol Min Typ Max Unit Supply Current ICC - - 300 mA Inrush Current* Linrush - - 30 mA † greater than the steady state value Table 7. Control/Status Signal Characteristics Parameter Symbol Min Max Unit TX_DISABLE Input Voltage - High VIH 2.0 VccT V TX_DISABLE Input Voltage - Low VIL 0 0.8 V TX_FAULT Output Voltage - High VOH Host_Vcc-0.5 Host_Vcc V TX_FAULT Output Voltage - Low VOL 0 0.4 V RX_LOS Output Voltage – High VOH Host_Vcc-0.5 Host_Vcc V RX_LOS Output Voltage – Low VOL 0 0.4 V MOD_DEF[2] (SDA) Output Voltage – Low VOL . 0.4 V MOD_DEF[1] (SCL) Input Voltage – High VIH VccT, (VccR) x 0.7 . V MOD_DEF[1] (SCL) Input Voltage – Low VIL - VccT(VccR) x 0.3 V Table 8. TD+/- Input Signal Requirements Parameter Symbol Min Typ Max Unit Input Amplitude, Differential VI 200 . 2400 mV p-p Input Impedance, Differential RI . 100 . W Deterministic Jitter DJ . . 0.10 UI Total Jitter †† TJ . . 0.24 UI Mark Ratio . . 50 . % Parameter Symbol Min Typ Max Unit Output Amplitude, Differential* VO 600 - 1200 mVp-p Output Impedance, Differential RO - 100 - W † AC-coupled. †† TJ = RJ + DJ. At BER = 10-12 Table 9. RD+/- Output Signal Characteristics † AC-coupled. Pin Description A brief description of all of the electrical connector pins follows. The connector has staged contacts, so that hot-plugging can be performed. See Table 10. Table 10. Pinout Pin No. Sequence Description Pin No Sequence Description 1 1 VeeT 11 1 VeeR 2 3 TX_FAULT 12 3 RD- 3 3 TX_DISABLE 13 3 RD+ 4 3 MOD_DEF[2] 14 1 VeeR 5 3 MOD_DEF[1] 15 2 VccR 6 3 MOD_DEF[0] 16 2 VccT 7 3 RATE_SELECT 17 1 VeeT 8 3 RX_LOS 18 3 TD+ 9 1 VeeR 19 3 TD- 10 1 VeeR 20 1 VeeT Hot-Plugging Sequence The ground, VCC and other pins designated as the sequence (1) pins engage first during hot-plugging. The sequence (2) pins connect second during hot-plugging followed by the sequence (3) pins. Conversely, when the module is unplugged from the host system, the sequence (3) pins disengages before the sequence (2) pins disengages and then followed by the sequence (1) pins. Inserting or removing the AFCT-57V6NSZ will disrupt data transmission. This disruption occurs when the downstream receiver (e.g. deserializer phase-lock-loop) resynchronizes to a different bitstream signal. When this occurs, the downstream system will recognize the associated error (e.g. comma detect, loss-of-light, disparity, CRC, and frame errors). It is the responsibility of the system integrator to assure that no thermal, energy, or voltage hazard exists during the hot-plug-unplug sequence. It is also the responsibility of the system integrator and end-user to minimize static electricity and the probability of ESD events by careful design. 20 VeeT 1 VeeT 19 TD- 2 TX_FAULT 18 TD+ 3 TX_DISABLE 17 VeeT 4 MOD_DEF[2] 16 VccT 5 MOD_DEF[1] 15 VccR 6 MOD_DEF[0] 14 VeeR 7 RATE_SELECT 13 RD+ 8 RX_LOS 12 RD- 9 VeeR 11 VeeR 10 VeeR Top of Board Bottom of Board (as view through top of board) Figure 3. SFP Transceiver Electrical Pad Layout Pin Definitions TD+/TD- Transmit Data In and Inverted Transmit Data In are differential input to the transmitter. They are internally ACcoupled into an equivalent load of RI differential, as shown in Figure 13. TX_DISABLE Active high TTL input, with internal 10kΩ pullup resistor to Vcc. Asserting the transmitter disable will deactivate the laser within the assert time. The truth table shown describes the state of the module, and Table 11 indicates the timing of TX_DISABLE. RD+/RD- Received Data Out and Inverted Received Data Out are differential serial output from the receiver. These are AC-coupled 100 ohm differential lines which should be terminated with a 100 ohm (differential) at the user SERDES, as shown in Figure 13. AC coupling is done inside the module and is thus not required on the host board. RX_LOS Active high open collector/drain output which indicates a loss-of-signal condition (LOS). When the average optical power received by the module is below the Assert Level, RX_LOS is indicated according to the truth table below, and Table 11 indicates the timing of RX_LOS. RX_LOS requires a 4.7k-10k ohm pull-up resistor external to the module, i.e., in the host system Host_Vcc, as shown in Figure 13. The pull-up voltage is between 2.0 V and VccR(VccT) + 0.3 V. RATE_SELECT Not Connected. TX_FAULT Active high open collector/drain output which indicates a fault in the module. This can be (1) failure of the laser driver or (2) end-of-life of the laser. Under these conditions, the laser will be deactivated within the assert time. TX_FAULT also requires a 4.7k-10k ohm pull-up resistor external to the module, i.e. in the host system Host_Vcc, as shown in Figure 13. The pull-up voltage is between 2.0 V and VccT(VccR) + 0.3 V. Conditions (1) and (2) are latched, and for diagnostic purposes only, may be reset by toggling TX_DISABLE high for at least t_reset. See Table 11 and Figure 8. MOD_DEF[0:2] The AFCT-57V6NSZ has a serial ID function which provides information about the transceiver’s capabilities, standard interfaces, manufacturer and other information, and has a digital diagnostic monitoring function, per SFF-8472 [3], which allows monitoring operating temperature, supply voltage, laser bias current, transmitter optical output power and optical received power in real time. These functions are provided via a two wire serial EEPROM interface. MOD_DEF[0] is connected to ground inside the module. MOD_DEF[1] is the serial clock signal input. MOD_DEF[2] is the data output/input. Timing Characteristics of Control and Status I/O The timing characteristics of the control and status line are listed in Table 11 and Figure 4 to 10. Table 11. Timing Characteristics of Control and Status I/O Parameter Symbol Min Max Unit Condition TX_DISABLE Assert Time t_off - 10 µs Time from rising edge of TX_DISABLE to when the optical output falls below 10 % of nominal TX_DISABLE Negate Time t_on - 1 ms Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of nominal Time to Initialize, including reset of TX_FAULT t_init - 300 ms From power on or negation of TX_FAULT using TX_DISABLE TX_FAULT Assert Time T_fault - 100 µs Time from fault to TX_FAULT on TX_DISABLE to Reset T_reset 10 - µs Time TX_DISABLE must be held high to reset TX_FAULT RX_LOS Assert Time t_losson - 100 µs Time from LOS state to RX_LOS Assert RX_LOS Negate Time t_lossoff - 100 µs Time from non-LOS state to RX_LOS deassert Serial ID Clock Rate F_clock - 100 kHz - Vcc > 2.97 V Vcc > 2.97 V TX_FAULT TX_FAULT TX_DISABLE TX_DISABLE Transmitted Signal Transmitted Signal t_init t_init Figure 4. Power on initialization of SFP transceiver, TX_DISABLE negated Figure 5. Power on initialization of SFP transceiver, TX_DISABLE asserted TX_FAULT Occurrence of transmitter safety fault TX_DISABLE TX_FAULT Transmitted Signal TX_DISABLE t_on t_off Transmitted Signal t_fault Figure 6. SFP TX_DISABLE timing during normal operation Figure 7. Detection of transmitter safety fault condition Occurrence of transmitter safety fault Occurrence of transmitter safety fault TX_FAULT TX_FAULT TX_DISABLE TX_DISABLE Transmitted Signal Transmitted Signal t_fault t_reset t_reset t_init * t_init * * SFP will clear TX_FAULT in < t_init if the fault is transient * SFP will clear TX_FAULT in < t_init if the fault is transient Figure 8. Successful recovery from transient safety fault condition Figure 9. Unsuccessful recovery from safety fault condition Occurrence of loss of signal (LOS) RX_LOS t_losson Figure 10. Timing of RX_LOS detection t_lossoff Serial Identification The serial identification (ID) at 2 wire serial bus address 1010000X (A0h) provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer, and other information. The serial interface uses the 2-wire serial CMOS E2PROM protocol defined for the ATMEL AT24C01A/02/04 family of components or equivalent components. The information obtained from the AFCT-57V6NSZ via the serial ID is shown in Table 12. Table 12. Serial ID: Data Fields - 2-Wire Address A0h BASE ID FIELDS Data Address Field Size (Byte) Name of field Description of Field Context (Hex) 0 1 Identifier SFP 03h 1 1 Ext. Identifier SFP 04h 2 1 Connector LC 07h 3 8 Transceiver ————— 00h 4 ————— 00h 5 ————— 00h 6 1000BASE-LX 02h 7 ————— 00h 8 ————— 00h 9 ————— 00h 10 ————— 00h 11 1 Encoding 8B/10B 01h 12 1 BR, Nominal x 100 Mbits/sec 0Ch 13 1 Reserved ————— 00h 14 1 Length (9µm) - km 40 x 1 km 28h 15 1 Length (9µm) Longer than 25.4 km FFh 16 1 Length (50µm) Not Supported - 00h 17 1 Length (62.5µm) Not Supported - 00h 18 1 Length (Copper) Not Supported - 00h 19 1 Reserved ————— 00h 20 16 Vendor name A 41 21 V 56 22 A 41 23 G 47 24 O 4F 25 ————— 20h 26 ————— 20h 27 ————— 20h 28 ————— 20h 29 ————— 20h 30 ————— 20h 31 ————— 20h 32 ————— 20h 33 ————— 20h 34 ————— 20h 35 ————— 20h 10 Table 12. Serial ID: Data Fields - 2-Wire Address A0h (Continued) BASE ID FIELDS Data Address Field Size (Byte) Name of field Description of Field Context (Hex) 36 1 Reserved ————— 00h 37 3 Vendor OUI 00-17-6A 00h 38 17h 39 6Ah 40 A 41 41 F 46 42 C 43 43 T 54 44 - 2D 45 5 35 46 7 37 47 V 56 48 5 35 49 N 4E 50 S 53 51 Z 5A 52 ————— 20h 53 ————— 20h 54 ————— 20h 55 ————— 20h ————— Note 1 57 ————— Note 1 58 ————— Note 1 59 ————— Note 1 1550 nm 06h 56 60 16 4 2 Vendor PN Vendor Rev. Laser Wavelength 61 0Eh 62 1 Reserved ————— 00h 63 1 CC BASE Check Code Note 2 Notes: 1. These addresses are reserved for Vendor Revision. 2. Data Address 63 is the Check Sum for byte 0 to byte 62 (BASE ID FIELDS). 11 Table 12.- Serial ID: Data Fields - 2-Wire Address A0h (Continued) EXTENDED ID FIELDS Data Address Field Size (Byte) Name of field Description of Field Context (Hex) 64 2 Function ————— 00h TX_DISABLE, TX_FAULT, RX_LOS 1Ah 65 66 1 BR, max. Unspecified 00h 67 1 BR, min. Unspecified 00h 68 16 Vendor S/N Note 3 69 Note 3 70 Note 3 71 Note 3 72 Note 3 73 Note 3 74 Note 3 75 Note 3 76 Note 3 77 Note 3 78 Note 3 79 Note 3 80 Note 3 81 Note 3 82 Note 3 83 84 Note 3 8 Data Code 85 86 87 88 89 90 91 Year (ASCII code) Note 4 Digits of Month (ASCII code) Note 4 Day of Month (ASCII code) Note 4 Vendor Specific Lot Code (ASCII code) Note 4 Note 4 Note 4 Note 4 Note 4 92 1 Diagnostic Monitoring Type -Digital Diagnositic Monitoring-Inter- 68h nally Calibrated-Average power 93 1 Enchanced Option -Alarm/Warning Flags ImplementedSoft TX_FAULT and RX_LOS Monitoring F0h 94 1 SFF-8472 Compliance Includes Functionality Described in Rev 9.3 SFF8472 01h 95 1 CC_EXT Check code for Extended ID Fields Note 5 96-255 160 VENDOR SPECIFIC ID FIELDS Notes: 3. These addresses are reserved for Vendor SN (serial number). 4. These addresses are reserved for date code information 5. Data Address 95 is the Check Sum for byte 64 to byte 94 (EXTENDED ID FIELDS). 12 00h Digital Diagnostic Monitoring 2 wire serial bus address 1010001X (A2h) is used to access measurement of transceiver temperature, internally measured supply voltage, TX bias current, TX optical output power and RX optical input power which are shown in Table 13. Each diagnostic parameter has a corresponding high alarm, low alarm, high warning and low warning threshold which are shown in Table 14. Alarm flags indicate conditions likely to be associated with an inopera- tional link and cause for immediate action. Warning flags indicate conditions outside the normally guaranteed bounds but not necessarily causes of immediate link failures. It is recommended that detection of an asserted flag bit should be verified by a second read of the flag at least 100 msec later. The detail contents of the 2 wire address A2h are shown in Table 15 to 21. Table 13. Diagnostic Parameters Range Diagnostic Parameter Min. Max. LSB Accuracy Address Note Transceiver Temperature(Temp) -15 [ºC] +105 [ºC] 1/256 [ºC] ±3 [ºC] 96-97 A 16 bit signed twos complement value Supply Voltage (Voltage) +2.97 [V] +3.63 [V] 100 [µV] ±3 [%] 98-99 A 16 bit unsigned integer TX Bias Current (Bias) 0 [mA] +95 [mA] 2.0 [µA] ±10 [%] 100-101 A 16 bit unsigned integer TX Optical Output Power (TX Power) -6 [dBm] +2 [dBm] 0.1 [µW] ±3 [dB] 102-103 A 16 bit unsigned integer RX Optical Input Power (RX Power) -25 [dBm] +3 [dBm] 0.1 [µW] ±3 [dB] 104-105 A 16 bit unsigned integer Table 14. Alarm and Warning Thresholds Warning Alarm Parameter Unit Low High Low High Transceiver Temperature ºC -5 +70 -10 +75 Supply Voltage V +3.1 +3.5 +3 +3.6 TX Bias Current mA 5 80 3 90 TX Optical Output Power dBm -4 0 -7 +3 RX Optical Input Power dBm -21 0 -22 +1 13 Table 15. Alarm and Warning Thresholds (2-Wire Address A2h) Address # Bytes Name Description 00-01 2 Temp High Alarm MSB at low address 02-03 2 Temp Low Alarm MSB at low address 04-05 2 Temp High Warning MSB at low address 06-07 2 Temp Low Warning MSB at low address 08-09 2 Voltage High Alarm MSB at low address 10-11 2 Voltage Low Alarm MSB at low address 12-13 2 Voltage High Warning MSB at low address 14-15 2 Voltage Low Warning MSB at low address 16-17 2 Bias High Alarm MSB at low address 18-19 2 Bias Low Alarm MSB at low address 20-21 2 Bias High Warning MSB at low address 22-23 2 Bias Low Warning MSB at low address 24-25 2 TX Power High Alarm MSB at low address 26-27 2 TX Power Low Alarm MSB at low address 28-29 2 TX Power High Warning MSB at low address 30-31 2 TX Power Low Warning MSB at low address 32-33 2 RX Power High Alarm MSB at low address 34-35 2 RX Power Low Alarm MSB at low address 36-37 2 RX Power High Warning MSB at low address 38-39 2 RX Power Low Warning MSB at low address 40-55 16 Reserved Reserved for future monitored quantities 14 Table 16. Calibration constants for External Calibration Option (2-Wire Address A2h) Address # Bytes Name Description 56-59 4 Rx_PWR(4) Single precision floating point calibration data -Rx optical power. Bit 7 0 of byte 56 is MSB. Bit 0 of byte 59 is LSB. 60-63 4 Rx_PWR(3) Single precision floating point calibration data -Rx optical power. Bit 7 0 of byte 60 is MSB. Bit 0 of byte 63 is LSB. 64-67 4 Rx_PWR(2) Single precision floating point calibration data, Rx optical power. Bit 7 of byte 64 is MSB, bit 0 of byte 67 is LSB. 0 68-71 4 Rx_PWR(1) Single precision floating point calibration data, Rx optical power. Bit 7 of byte 68 is MSB, bit 0 of byte 71 is LSB. 1 72-75 4 Rx_PWR(0) Single precision floating point calibration data, Rx optical power. Bit 7 of byte 72 is MSB, bit 0 of byte 75 is LSB. 0 76-77 2 Tx_I(Slope) Fixed decimal (unsigned) calibration data, laser bias current. Bit 7 of byte 76 is MSB, bit 0 of byte 77 is LSB. 1 78-79 2 Tx_I(Offset) Fixed decimal (signed two’s complement) calibration data, laser bias current. Bit 7 of byte 78 is MSB, bit 0 of byte 79 is LSB. 0 80-81 2 Tx_PWR(Slope) Fixed decimal (unsigned) calibration data, transmitter coupled output 1 power. Bit 7 of byte 80 is MSB, bit 0 of byte 81 is LSB. 82-83 2 Tx_PWR(Offset) Fixed decimal (signed two’s complement) calibration data, transmitter 0 coupled output power. Bit 7 of byte 82 is MSB, bit 0 of byte 83 is LSB. 84-85 2 T(Slope) Fixed decimal (unsigned) calibration data, internal module temperature. Bit 7 of byte 84 is MSB, bit 0 of byte 85 is LSB. 1 86-87 2 T(Offset) Fixed decimal (signed two’s complement) calibration data, internal module temperature. Bit 7 of byte 86 is MSB, bit 0 of byte 87 is LSB. 0 88-89 2 V(Slope) Fixed decimal (unsigned) calibration data, internal module supply voltage. Bit 7 of byte 88 is MSB, bit 0 of byte 89 is LSB. 1 90-91 2 V(Offset) Fixed decimal (signed two’s complement) calibration data, internal module supply voltage. Bit 7 of byte 90 is MSB. Bit 0 of byte 91 is LSB. 0 92-94 3 Reserved Reserved ——— 95 1 Checksum Byte 95 contains the low order 8 bits of the sumof bytes 0-94. ——— 15 Content Table 17. A/D Values and Status Bits (2 Wire Address A2h) Byte Bit Name Description Converted analog values. Calibrated 16 bit data 96 All Temperature MSB Internally measured module temperature. 97 All Temperature LSB 98 All Vcc MSB 99 All Vcc LSB 100 All TX Bias MSB 101 All TX Bias LSB 102 All TX Power MSB 103 All TX Power LSB 104 All RX Power MSB 105 All RX Power LSB 106 All Reserved MSB Reserved for 1st future definition of digitized analog input 107 All Reserved LSB Reserved for 1st future definition of digitized analog input 108 All Reserved MSB Reserved for 2nd future definition of digitized analog input 109 All Reserved LSB Reserved for 2nd future definition of digitized analog input Internally measured supply voltage in transceiver. Internally measured TX Bias Current. Measured TX output power. Measured RX input power. Optional Status/Control Bits 110 7 TX Disable State Digital state of the TX_DISABLE Input Pin. 110 6 Soft TX Disable Read/write bit that allows software disable of laser. 110 5 Reserved 110 4 RX Rate Select State Digital state of the SFP RX Rate Select Input Pin.Not supported. 110 3 Soft RX Rate Select Read/write bit that allows software RX rate select.Not supported. 110 2 TX Fault Digital state of the TX_FAULT Output Pin. 110 1 LOS Digital state of the RX_LOS Output Pin. 110 0 Data Ready Bar Indicates transceiver has achieved power up and dataBit remains high until data is ready to be read at whichdevice sets the bit low. 111 7-0 Reserved Reserved. 16 Table 18. Alarm and Warning Flag Bits (2-Wire Address A2h) Byte Bit Name Description Reserved Optional Alarm and Warning Flag Bits 112 7 Temp High Alarm Set and latch when internal temperature exceeds high alarm level † 112 6 Temp Low Alarm Set and latch when internal temperature is below low alarm level † 112 5 Vcc High Alarm Set and latch when internal supply voltage exceeds high alarm level † 112 4 Vcc Low Alarm Set and latch when internal supply voltage is below low alarm level † 112 3 TX Bias High Alarm Set and latch when TX Bias current exceeds high alarm level † 112 2 TX Bias Low Alarm Set and latch when TX Bias current is below low alarm level † 112 1 TX Power High Alarm Set and latch when TX output power exceeds high alarm level † 112 0 TX Power Low Alarm Set and latch when TX output power is below low alarm level † 113 7 RX Power High Alarm Set and latch when Received Power exceeds high alarm level † 113 6 RX Power Low Alarm Set and latch when Received Power is below low alarm level † 113 5 Reserved Alarm 113 4 Reserved Alarm 113 3 Reserved Alarm 113 2 Reserved Alarm 113 1 Reserved Alarm 113 0 Reserved Alarm 114 All Reserved 115 All Reserved 116 7 Temp High Warning Set and latch when internal temperature exceeds high warning level † 116 6 Temp Low Warning Set and latch when internal temperature is below low warning level † 116 5 Vcc High Warning Set and latch when internal supply voltage exceeds high warning level † 116 4 Vcc Low Warning Set and latch when internal supply voltage is below low warning level † 116 3 TX Bias High Warning Set and latch when TX Bias current exceeds high warning level † 116 2 TX Bias Low Warning Set and latch when TX Bias current is below low warning level † 116 1 TX Power High Warning Set and latch when TX output power exceeds high warning level † 116 0 TX Power Low Warning Set and latch when TX output power is below low warning level † 117 7 RX Power High Warning Set and latch when Received Power exceeds high warning level † 117 6 RX Power Low Warning Set and latch when Received Power is below low warning level † 117 5 Reserved Warning 117 4 Reserved Warning 117 3 Reserved Warning 117 2 Reserved Warning 117 1 Reserved Warning 117 0 Reserved Warning 118 All Reserved 119 All Reserved † Latch state cleared on read, power cycle or the host toggles TX_DISABLE. 17 Table 19. Vendor Specific Memory Address and User EEPROM (2-Wire Address A2h) Byte # Byte Name Description 120-127 8 Vendor Specific 00h. 128-247 120 User EEPROM User Writable EEPROM 248-255 8 ————— 00h Table 20. Bit weights (°C) for Temperature Reporting Registers Most Significant Byte (Byte 96) Least Significant Byte (Byte 97) D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 SIGN 64 32 16 8 4 2 1 1/2 1/4 1/8 1/16 1/32 1/64 1/128 1/256 Table 21. Digital Temperature Format Temputer BINARY HEXADECIMAL DECIMAL FRACTION HIGH BYTE LOW BYTE HIGH BYTE LOW BYTE +127.996 +127 255/256 01111111 11111111 7F FF +125.000 +125 01111101 00000000 7D 00 +25.000 +25 00011001 00000000 19 00 +1.004 +1 1/256 00000001 00000001 01 01 +1.000 +1 00000001 00000000 01 00 +0.996 +255/256 00000000 11111111 00 FF +0.004 +1/256 00000000 00000001 00 01 0.000 0 00000000 00000000 00 00 -0.004 -1/256 11111111 11111111 FF FF -1.000 -1 11111111 00000000 FF 00 -25.000 -25 11100111 00000000 E7 00 -40.000 -40 11011000 00000000 D8 00 -127.996 -127 255/256 10000000 00000001 80 01 -128.000 -128 10000000 00000000 80 00 18 0 2 wire addrress 1010000X (A0h) Serial ID Defined by SFP MSA (96 bytes) 0 2 wire addrress 1010001X (A2h) 55 95 95 Vendor Specific (32 bytes) Cal Constants (40 bytes) Real Time Diagnostic Interface (24 bytes) 119 127 127 Alarm and Warning Thresholds (56 bytes) Vendor Specific (8 bytes) User Writable EEPROM (120 bytes) Reserved in SFP MSA (128 bytes) 247 255 255 Vendor Specific (8 bytes) Figure 11. Serial ID and Digital Diagnostic Memory Map Timing Characteristics of Serial ID/DDM The timing characteristics of the serial ID /DDM are listed in Table 22 and Figure 12. Table 22. Timing Characteristics of Serial ID / DDM Parameter Symbol Min Max Unit SCL Clock Rate f_clock . 100 kHz BUS Free Time between STOP and START Condition tBUF 4.7 . µs START Condition Hold Time tHD:STA 4.0 . µs START Condition Setup Time tSU:STA 4.7 . µs Low Period of SCL Clock tLOW 4.7 . µs High Period of SCL Clock tHIGH 4.0 . µs Data Hold Time tHD:DAT 0 . ns Data Setup Time tSU:DAT 250 . ns Rise Time tR . 1.0 µs 19 SDA tBUF SCL tHIGH tHD:STA STOP tHD:STA tF tR tLOW tSU:STA tSU:DAT START tHD:DAT SDA D0 tSU:STO REPEATED START ACK tWR WORDn SCL STOP Condition START Condition Figure 12. Serial ID and DDM Timing Host Board SFP Module TD+ LASER DRIVER Protocol Vcc 100 ohm TD- 4.7k-10k ohm TX_FAULT TX_DISABLE Recommended Power Supply Filter 1 uH VeeT VccT 10 uF VccR 0.1 uF +3.3 V 1 uH 0.1 uF VeeR PREAMP & POSTAMP PROTOCOL IC 10 uF 0.1 uF 10 uF Note 1 SERDes IC RD+ 100 ohm RDRX_LOS RATE_SELECT +3.3 V 4.7k-10k ohm 4.7k-10k ohm SERIAL ID & DDM 4.7k-10k ohm MOD_DEF[0] MOD_DEF[1] PLD/PAL MOD_DEF[2] 4.7k-10k ohm Note 1: Consult the SERDES manufacturer for the termination method. Figure 13. Recommended Power Supply Filter and Example of SFP Host Board Schematic 20 Connectors and Cables Laser Eye Safety The optical interface of the AFCT-57V6NSZ is a duplex LC connector which is described in TIA/EIA FOCIS document [5]. PC-polished ferrules are recommended in mating cables for the AFCT-57V6NSZ. The Avago Technologies AFCT-57V6NSZ module is a Class 1 laser product under the requirements of IEC 608251:1993+A1:1997+A2:2001 and U. S. 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated July 26, 2001, when used as specified by Avago. Class 1 products are considered to be safe. The electrical connection is provided by a card edge connector which mates with a corresponding socket [1]. In addition the transceiver fits a cage assembly [1] which also functions as an EMI shield. Contact an Avago sales office for cable, electrical connector, cage and accessory ordering information. Caution -Use of controls or adjustment or performance of procedures other than those specified herein may result in hazardous radiation exposure. Any modification, adjustment, or use of the AFCT-57V6NSZ module not specified by Avago may void the certification of the product and constitute an act of new manufacturing of a laser product under 21 CFR Subchapter J, and as such will require recertification by the new manufacturer. This includes operation beyond the Absolute Maximum Ratings listed in Table 2. Physical Description Figure 14 shows the mechanical outline of the Avago AFCT-57V6NSZ SFP. For a complete description of the footprint standards, refer to the MSA specification [1]. AVAGO 21CFR(J) CLASS1 AFCT-5745xxxZ ####nmLASER PROD COUNTRY OF ORIGIN YYWW S/N:######## 14±0.1 [0.551±0.004 1,48 [0.058] 6,25±0.05 [0.246±0.002] TX 55,5±0.20 [2.158±0.008] 13,2±0.1 [0.516±0.04] 12.7±0.1 [0.500±0.004] RX 15.5 [0.610] AREA FOR DUST CAP 8.45±0.1 [0.333±0.004] +0,1-0 14,46 [0.569] 13,7±0.1 [0.539±0.004] Figure 14. AFCT-57V6NSZ Mechanical Outline Drawing 21 Notes: 1. Bail delatch is colored BLUE for SONET/Single-Mode Identification. 3,5±0.3 [0.14±0.01] PCB 41,73±0.5 [1.64±0.02] 15 MAX [0.59] CAGE ASSEMBLY 9,8 MAX [0.39] 1,7±0.9 [0.07±0.4] BEZEL AREA FOR DUST CAP 11.6 REF [0.46] 0,35 REF [0.01] BELOW PCB 10 REF [0.39] TO PCB 15,25±0.1 [0.60±0.004 16.25±0.1 [0.64±0.004] MIN PITCH 10,4±0.1 0.41±0.004 MSA SPECIFIED BEZEL Notes: 1. Bail delatch is colored BLUE for SONET/Single-Mode Identification. DIMENSION ARE IN MILLIMETERS [INCHES] Figure 15. Mounting drawing Regulatory Information References This product is under testing with respect to American and European product safety and electromagnetic compatibility regulations. For further information regarding regulatory certification, refer to the SFP Regulatory Specification [7] and SFP Application Note [6], or contact the Avago sales office. [1] Small Form-factor Pluggable (SFP) Transceiver Multi Source Agreement, September 14, 2000 [2] IEEE 802.3z Media Access Control (MAC) Parameters, Physical Layer, Repeater and Management Parameters for 1000Mb/s Operation. [3] SFF-8472, Digital Diagnostic Monitoring Interface for Optical Transceivers, Draft Revision 9.3, August 1, 2002 [4] A. Widmer & P. Franaszek, “A DC-balanced, partitionedblock, 8B/10B transmission code “IBM Journal of Research & Development”, Vol. 27, No. 5, Pg. 440-451, (Sept. 1983). [5] TIA/EIA-604-10, “FOCIS 10, Fiber Optic Connector Intermateability Standard”, 1999 For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2009 Avago Technologies. All rights reserved. Obsoletes AV01-0655EN AV02-0620EN - April 14, 2009