HFBR-57E5APZ Multimode Small Form-Factor Pluggable Transceivers with LC connector and DMI for ATM, FDDI, Fast Ethernet and SONET OC-3/SDH STM-1 Data Sheet Description Features The HFBR-57E5APZ Small Form-Factor Pluggable LC trans- RoHS compliant ceiver gives the system designer a product to implement Compatible with ATM Forum UNI SONET OC-3 multi- FDDI/Fast Ethernet network with DMI and SONET OC-3 mode fiber physical layer specification (SDH STM-1) physical layers for ATM and other services. Lead free As an enhancement to the conventional SFP interface Industry Standard Small Form Pluggable (SFP) package defined in SFF-8074i, the HFBR-57E5APZ is compatible LC duplex connector optical interface to SFF-8472 (digital diagnostic interface for optical trans- ceivers). Using the 2-wire serial interface defined in the Operates with 50/125 m and 62.5/125 m multimode SFF-8472 MSA, the HFBR-57E5APZ provides real-time fiber information on temperature, LED bias current, LED Compatible with 100Base-FX version of IEEE802.3u average output power and receiver average input power. Single +3.3 V power supply The interface also adds the ability to monitor the Receiver Loss of Signal (RX LOS). +3.3 V TTL LOS output Receiver outputs are squelch enabled Transmitter Manufactured in an ISO 9001 certified facility The transmitter contains a 1310 nm InGaAsP LED. The -40 C to 85 C temperature range LED is packaged in the optical subassembly of the trans- mitter. It is driven by an integrated circuit which converts Bail de-latch differential PECL logic signals into an analog LED drive Hot plug capability current. This current is monitored by the digital diagnostic interface. The transmitter light output power is inferred Applications from this information. Factory automation at Fast Ethernet speeds Receiver Fast Ethernet networking over multimode fiber The receiver utilizes an InGaAs PIN photodiode coupled OC-3 SFP transceivers are designed for ATM LAN and to a transimpedance preamplifier IC. It is packaged in the WAN applications such as: optical subassembly of the receiver. The PIN/preamplifier ATM switches and routers combination is connected to a quantizer IC which provides SONET/SDH switch infrastructure the final pulse shaping for data output. The data output is differential LVPECL. The quantizer IC has a loss of signal Multimode fiber ATM backbone links (LOS) detection circuit and has an open collector logic high output signal in the absence of a usable input optical signal. This LOS output is +3.3 V TTL as per SFF-8074i. The PIN photodiode average current is monitored by the digital diagnostic interface as a measure for input optical power.Loss of Signal 20 V T 1 V T EE EE The Loss of Signal (LOS) output indicates that the optical 19 TD 2 NC** input signal to the receiver does not meet the minimum 18 TD+ 3 TxDisable detectable level for FDDI and OC-3 compliance. When LOS 17 V T 4 MOD-DEF(2) EE is high, it indicates a link failure such as a disconnected or 16 V T 5 MOD-DEF(1) CC broken fiber connection or a malfunctioning transmitter. 15 V R 6 MOD-DEF(0) CC 14 V R 7 NC Module package EE 13 RD+ 8 LOS The transceiver package is compliant with the Small 12 RD 9 V R EE Form Pluggable (SFP) MSA with the LC duplex connector 11 V R 10 V R EE EE option. The hot-pluggable capability of the SFP package allows the module to be installed at any time even with TOP OF BOARD BOTTOM OF BOARD the host system operating and on-line. This permits the (AS VIEWED THROUGH TOP OF BOARD) system to be configured or maintained without system ** Connect to Internal Ground downtime. The HFBR-57E5APZ requires a 3.3 V DC power Figure 2. Connection diagram of module printed circuit board. supply for optimal performance. involves (1) Ground, (2) Power, and then (3) Signal pins Module Diagrams making contact with the host board surface mount connector in that order. This printed circuit board card Figure 1 illustrates the major functional components edge connector is depicted in Figure 2. of the HFBR-57E5APZ. The connection diagram of the module is shown in Figure 2. Figures 5 and 7 depict the Digital Diagnostic Interface and Serial Identification external configuration and dimensions of the module. The 2-wire serial interface is based on the ATMEL AT24C01A Installation series EEPROM protocol. Conventional EEPROM memory (bytes 0-255 at memory address 0xA0) is organized in The HFBR-57E5APZ can be installed in or removed from compliance with SFF-8074i. As an enhancement the any MultiSource Agreement (MSA) compliant Small Form HFBR-57E5APZ is also compatible to SFF-8472. This Pluggable port regardless of whether the host equipment enhancement offers digital diagnostic information at is operating or not. The module is simply inserted, electri- bytes 0-255 at memory address 0xA2. cal interface first, under finger pressure. Controlled hot- plugging is ensured by design and by 3-stage pin In addition to monitoring of the LED drive current and sequencing at the electrical interface. The module housing photodiode current, the interface also monitors the trans- makes initial contact with the host board EMI shield mitter supply voltage and temperature. The transmitter mitigating potential damage due to Electro-Static voltage supply must be provided for the digital diagnostic Discharge (ESD). The 3-stage pin contact sequencing interface to operate. OPTICAL INTERFACE ELECTRICAL INTERFACE RECEIVER RD+ (RECEIVE DATA) AMPLIFICATION LIGHT FROM FIBER PHOTO-DETECTOR & QUANTIZATION RD (RECEIVE DATA) Rx LOSS OF SIGNAL MOD-DEF2 (SDA) CONTROLLER & MEMORY MOD-DEF1 (SCL) MOD-DEF0 TRANSMITTER TX DISABLE TD+ (TRANSMIT DATA) LIGHT TO FIBER LED LED DRIVER TD (TRANSMIT DATA) TX FAULT Figure 1. Transceiver functional diagram 2