GO2920 Dual Channel Video Optical Receiver Module Data Sheet Features Description * SMPTE 297-2006 compliant * Robust error free reception of signals from 50Mbps to 3Gbps * Supports SD-SDI, HD-SDI and 3G-SDI * Hot-pluggable The GO2920 is a dual channel optical receiver module designed to convert optical serial digital signals to electrical serial digital signals as defined in SMPTE 297-2006. The GO2920 is specifically designed for robust performance in the presence of SDI pathological patterns for SMPTE 259M, SMPTE 344M, SMPTE 292M and SMPTE 424M serial rates. * Digital Diagnostic functions available through the I2C interface including: Monitoring of receive optical power, supply voltage and module temperature Alarm reporting Module ID polling * Single +3.3V power supply * RoHS compliant * Telcordia GR-468 compliant * Operating temperature range: 0C to 70C (case) * 56.5mm x 13.4mm x 8.6mm SFP Package Applications * SMPTE 297-2006 compatible optical-to-electrical interfaces * High-density video routers The GO2920 contains two independent optical receivers. Each receiver is designed to provide error-free reception of signals from 50Mbps to 3Gbps with up to 30km single mode fiber (9/125) when used with the GO2922-3131CM. A maximum distance of 10km is achievable under worst case conditions and 3Gbps pathological. The GO2920 is also hot-pluggable. The GO2920 provides extensive operational status monitoring through an I2C interface. For each receiver channel, input optical power is monitored. Other operating conditions such as supply voltage and operating temperature are also monitored. If a parameter monitored is outside the pre-defined range, the alarm flag associated with the parameter will be raised. Ordering Information Part Number Package Temperature Range GO2920-CM SFP 0C to 70C Figure A: GO2920 3G-SDI Dual Channel Video Optical Receiver Module GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 www.gennum.com 1 of 25 Revision History Version ECR Date Changes and/or Modifications A 141244 August 2006 B 143832 February 2007 C 145191 May 2007 0 147052 August 2007 1 148307 November 2007 Updated receiver wavelength range in Table 3-2: Optical Performance Specifications. 2 149172 May 2008 Updated sensitivity for SMPTE 424M and sensitivity for SMPTE 259M in Table 3-2: Optical Performance Specifications. Removed total output jitter values in Table 3-3: DC Electrical Specifications. Added graphic of product to front page. Moved Ordering Information to front page. Removed List of Tables and List of Figures. Changed Gb/s and Mb/s to Gbps and Mbps. 3 149982 July 2008 Updated document to new Gennum template. Updated Features, Description, Table 3-1, Table 3-2, Table 3-3, Table 3-4 and Table 6-1. Deleted Figure 6-2 and Table 6-1. Other editorial updates. 4 152963 October 2009 Added 7.2 Marking Information, 4.1 I2C Bus Interface and clarifications on test conditions for various specifications. LOS hysteresis and input power monitoring accuracy specifications were revised. Numerous editorial updates throughout document. Document is now a Data Sheet. New document. Corrected minor typos and removed references to address B0h that no longer exists. Modified loss of signal optical hysteresis in Table 3-2: Optical Performance Specifications. Added Figure 5-1: Typical Application Circuit. Corrected typo in packaging dimension in Table 6-1. Changed Conditions from Video to Pathological and updated Optical Performance Specifications in Table 3-2: Optical Performance Specifications. Updated Serial ID Data Fields in Table 4-2: Module Identification Fields. Updated Total Power Consumption in Table 3-3: DC Electrical Specifications. Changed Typical Power Consumption to 470mW, Wavelengths, and changed Pull-Up Resistor value to 4.7k in Figure 5-1: Typical Application Circuit. Converted to Preliminary Data Sheet. Updated Sensitivity values in Table 3-2: Optical Performance Specifications, Total Output Jitter and Rise/Fall Time values in Table 3-3: DC Electrical Specifications and Addresses in Table 4-2: Module Identification Fields. GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 2 of 25 Contents Features.................................................................................................................................................................1 Description...........................................................................................................................................................1 Ordering Information.......................................................................................................................................1 Revision History .................................................................................................................................................2 1. Functional Block Diagram..........................................................................................................................4 2. Pin Specifications ..........................................................................................................................................5 2.1 Pin Configuration .............................................................................................................................5 2.2 Pin Descriptions ................................................................................................................................6 2.3 Host Board Power Supply Requirements .................................................................................7 2.4 Optical Connector Requirements ................................................................................................7 3. Product Specifications .................................................................................................................................8 3.1 Absolute Maximum Ratings ..........................................................................................................8 3.2 Optical Performance Specifications ...........................................................................................8 3.3 DC Electrical Specifications ..........................................................................................................9 3.4 AC Electrical Specifications ....................................................................................................... 10 3.5 Supporting Circuit Specifications ............................................................................................ 10 3.5.1 In-Rush Current Control Circuit ................................................................................... 10 4. Digital Diagnostics ..................................................................................................................................... 11 4.1 I2C Bus Interface ............................................................................................................................ 11 4.2 Serial Interface Memory Map .................................................................................................... 13 5. Application Reference Design ............................................................................................................... 19 5.1 Typical Application Circuit ........................................................................................................ 19 6. References and Relevant Standards .................................................................................................... 20 7. Package Information ................................................................................................................................. 21 7.1 Package Dimensions ..................................................................................................................... 21 7.2 Marking Information .................................................................................................................... 22 7.3 PCB Layout Recommendations ................................................................................................. 23 GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 3 of 25 1. Functional Block Diagram Limiting AMP 1 Differential Electrical Output I2C Bus 1260 - 1620nm Receiver Input Power Monitoring Digital Diagnostics Differential Electrical Output ROSA_1 TIA + PIN Limiting AMP 2 ROSA_2 TIA + PIN 1260 - 1620nm Figure 1-1: GO2920 Functional Block Diagram GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 4 of 25 2. Pin Specifications 2.1 Pin Configuration Figure 2-1 shows the host board pad configuraiton for the GO2920. Figure 2-2 shows the edge connector pad configuraiton for the GO2920 Towards Bezel 1 VEE_RX2 NC 20 2 RD2- NC 19 3 RD2+ NC 18 4 VEE_RX2 VEE_RX2 17 5 I2C CLK VCC_RX2 16 6 2 I C DATA VCC_RX1 15 7 VEE_RX1 VEE_RX1 14 8 NC RD1+ 13 9 NC RD1- 12 10 NC VEE_RX1 11 Towards ASIC Figure 2-1: GO2920 Host Board Pad Configuration Top of Board Bottom of Board (as viewed through top of board) 20 NC 1 VEE_RX2 19 NC 2 RD2- 18 NC 3 RD2+ 17 VEE_RX2 4 VEE_RX2 16 VCC_RX2 5 I2C CLK 15 VCC_RX1 6 I2C DATA 14 VEE_RX1 7 VEE_RX1 13 RD+ 8 NC 12 RD- 9 NC 11 VEE_RX1 10 NC Figure 2-2: GO2920 Edge Connector Pad Configuration GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 5 of 25 2.2 Pin Descriptions Table 2-1 lists the pin descriptions for the GO2920. Table 2-1: Pin Descriptions Number Name Type Description 1 VEE_RX2 Ground Receiver Channel 2 Ground Connection 2 RD2- Output Negative Differential Output (AC-coupled internally) 3 RD2+ Output Positive Differential Output (AC-coupled internally) 4 VEE_RX2 Ground Receiver Channel 2 Ground Connection 5 I2C CLK Digital (Input) I2C Clock 6 I2C DATA Digital (Bi-Directional) I2C Data 7 VEE_RX1 Ground 8 NC No Connect No Connection 9 NC No Connect No Connection 10 NC No Connect No Connection 11 VEE_RX1 Ground Receiver Channel 1 Ground Connection 12 RD1- Output Negative Differential Output (AC-coupled internally) 13 RD1+ Output Positive Differential Output (AC-coupled internally) 14 VEE_RX1 Ground Receiver Channel 1 Ground Connection 15 VCC_RX1 Power Receiver Channel 1 Power Supply 16 VCC_RX2 Power Receiver Channel 2 Power Supply 17 VEE_RX2 Ground Receiver Channel 2 Ground Connection 18 NC No Connect No Connection 19 NC No Connect No Connection 20 NC No Connect No Connection Receiver Channel 1 Ground Connection Notes: 1. Each channel has an independent power and ground connection. 2. All VEE_RX1 are connected together inside the module. 3. All VEE_RX2 are connected together inside the module. GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 6 of 25 2.3 Host Board Power Supply Requirements The host board is required to provide a regulated and filtered power supply of 3.3V +/5% for the GO2920 via the on board SFP connector. Figure 2-3 shows the recommended board supply filtering. When the host board is loaded with a resistive load in place of the SFP module and sourcing the maximum rated current, the peak-to-peak power supply noise measured on the SFP connector should comply to Table 2-2. VCC_RX1 3.3V VCC_RX2 GO2920 Host Board Figure 2-3: Recommended Host Board Supply Filtering Table 2-2: Maximum Allowable Host Board Power Supply Noise at VCC_Rx Frequency (KHz) Peak-to-Peak Noise Amplitude (%) 0.02-1000 2 1000-10000 3 2.4 Optical Connector Requirements An LC connector with PC/UPC polish is required for each port. GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 7 of 25 3. Product Specifications 3.1 Absolute Maximum Ratings Table 3-1 lists the absolute maximum ratings for the GO2920. Conditions exceeding the limits listed may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions outside those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 3-1: Absolute Maximum Ratings Parameter Conditions Value/Units Supply Voltage - 4.0V Operating Case Temperature - -20C < TCASE < 85C Storage Temperature - -40C < TSTG < 85C Receiver Optical Input Power - 5dBm ESD tolerance on all pins - 1kV HBM Relative Humidity (non-condensing) - 5% - 95% RH 3.2 Optical Performance Specifications Table 3-2 lists the optical performance specifications for the GO2920. Table 3-2: Optical Performance Specifications VCC = 3.3V 5%, TC = 0oC to 70oC. Typical values are at VCC = 3.3V, TA = 25oC unless otherwise specified. Parameter Symbol Condition Min Typ Max Unit Notes Wavelength - 1260 - 1620 nm - Sensitivity for SMPTE 259M - Pathological - -22 -20 dBm 1 - PRBS - -23 -21 dBm 1 - Pathological - -22 -20 dBm 1 - PRBS - -23 -21 dBm 1 - Pathological - -22 -20 dBm 1 - PRBS - -23 -21 dBm 1 - Pathological - -20 -18 dBm 1 - PRBS - -23 -20 dBm 1 - 2.97Gbps 0 - - dBm 1 143-360Mbps Sensitivity for SMPTE 344M 540Mbps Sensitivity for SMPTE 292M 1.485Gbps Sensitivity for SMPTE 424M 2.97Gbps Overload GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 8 of 25 Table 3-2: Optical Performance Specifications (Continued) VCC = 3.3V 5%, TC = 0oC to 70oC. Typical values are at VCC = 3.3V, TA = 25oC unless otherwise specified. Parameter Symbol Condition Min Typ Max Unit Notes Loss of Signal Asserted - 2.97Gbps PRBS ER=7dB -29 - - dBm - Loss of Signal De-asserted - 2.97Gbps PRBS ER=7dB - - -23 dBm - Loss of Signal Optical Hysteresis - 2.97Gbps PRBS ER=7dB 0.5 - - dB - Maximum Back Reflection - - - - -27 dB - Input Power Monitoring Accuracy - - -2 - 2 dB - NOTES 1. The sensitivity and overload specification refers to the input power levels for BER = 1E-12 (7dB ER input signal). Pathological test patterns are Gennum defined patterns that are more stressful that SDI check field patterns. 3.3 DC Electrical Specifications Table 3-3 lists the DC electrical specifications for the GO2920. Figure 3-1 shows the definition of the differential signal level. Table 3-3: DC Electrical Specifications VCC = 3.3V 5%, TC = 0oC to 70oC. Typical values are at VCC = 3.3V, TA = 25oC unless otherwise specified. Parameter Operating Temperature Range Power Supply Voltage Total Power Consumption Differential Output Data Amplitude Symbol Condition Min Typ Max Unit Notes TCASE - 0 - 70 C 1 VCC - 3.13 3.3 3.47 V 1 - - - 470 545 mW - VP-PDiff - 0.550 0.660 0.850 Vpp 2 Digital Input Low VIL 0 - 0.8 V - Digital Input High VIH 2 - VCC V - NOTES 1. Outside the specified range, performance is not guaranteed. 2. Each leg must be terminated to a 50 (single-ended) termination. Signals are AC coupled internally within the module. GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 9 of 25 VSE DATAP DATAN DATAP - DATAN V p-pDIFF = 2 x VSE 0V Figure 3-1: Definition of Differential Signal Level 3.4 AC Electrical Specifications Table 3-4 lists the AC electrical specifications for the GO2920. Table 3-4: AC Electrical Specifications VCC = 3.3V 5%, TC = 0oC to 70oC. Typical values are at VCC = 3.3V, TA = 25oC unless otherwise specified. Parameter Bit Rate Symbol Condition Min Max Units BR - 50 3000 Mbps Rise/Fall Time tr / tf 20% to 80% - 135 ps Time to Initialize t_init From power on - 300 ms Rx_LOS Assert Time t_loss_on Time from Rx_LOS state to Rx_LOS assert - 10 ms Rx_LOS Deassert Time t_loss_off Time from non-Rx_LOS state to Rx_LOS deassert - 10 ms - 400 kHz Serial ID Clock Rate f_serial_clock - 3.5 Supporting Circuit Specifications 3.5.1 In-Rush Current Control Circuit Due to the hot-pluggable requirement, the GO2920 has built-in circuits to limit the in-rush current upon hot insertion. The specifications of the in-rush limiting circuits are summarized in Table 3-5. Table 3-5: In-rush Current Limiting Circuits Specifications Parameter Value Maximum in-rush current ramp rate 50mA/ms Maximum in-rush current 30mA over steady state GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 10 of 25 4. Digital Diagnostics 4.1 I2C Bus Interface The I2C interface allows reading of diagnostic information from the module. It is comprised of I2C DATA and I2C CLK pins. All address and data bytes are transmitted through the I2C DATA pin. The I2C DATA and I2C CLK pins are open-collector and they must be pulled high (4.75k recommended) externally to the module. Data on the I2C DATA pin may only change during I2C CLK 'low' time periods. Data changes during I2C CLK 'high' periods will indicate either a START or STOP condition. Operations and conditions are described as follows: START Condition The START condition is originated by the host. A high-to-low transition of I2C DATA while I2C CLK 'high' defines a START condition that must precede any other command, see Figure 4-1. STOP Condition The STOP condition is originated by the host. A low-to-high transition of I2C DATA while I2C CLK 'high' defines a STOP condition, see Figure 4-1. START STOP I2C DATA I2C CLK Figure 4-1: I2C START and STOP Condition Acknowledge or ACK Condition The acknowledge condition occurs when the I2C DATA pin is pulled 'low' during the ninth clock pulse following an address or data byte. The module originates this condition after it has received a block or data address. The host originates this condition during a sequential address read operation. Addressing Operation The module must receive a block address following a START condition to enable a read operation. The block address is clocked into the module MSB to LSB. There are three read operations: current address read, random read, and sequential address read. Note that by the convention specified in the SFP MSA, 7-bit block addresses are left shifted by one bit when expressing them in hex. Block addresses for the different GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 11 of 25 memory regions are specified in Section 4.2. Block addresses A0h, A2h and B2h would therefore be transmitted defined as binary 1010000, 1010001 and 1011001 respectively. Current Address Read Operation The module has an internal register that maintains the data address used during the last read operation, incremented by one. If the most recent data address was FFh, then the register resets to 00h. Once the block address is clocked in by the host with the R/W bit set 'high', the module follows with an ACK condition, and the data byte located at the current data address is serially clocked out of the module MSB to LSB. The operation is terminated when the host does not provide an ACK condition and initiates a STOP condition. See Figure 4-2. START I2C DATA Block Address Read Data Byte STOP 7 6 5 4 3 2 1 R A 7 6 5 4 3 2 1 0 ACK Host driving data line NO ACK Module driving data line Figure 4-2: I2C Current Address Read Operation Random Address Read Operation A random read operation requires a dummy write sequence to load in the data address. Once the block and data addresses are clocked in by the host followed by an ACK condition provided by the module, the host must generate another START condition. The host now initiates a current address read operation by sending the block address with the R/W bit set 'high'. The module provides an ACK condition and serially clocks out the data byte. The operation is terminated when the host does not provide an ACK condition and initiates a STOP condition. See Figure 4-3. START I2C DATA Block Address Write START Data Address 7 6 5 4 3 2 1 W A 7 6 5 4 3 2 1 0 A ACK Host driving data line Block Address Read Data Byte STOP 7 6 5 4 3 2 1 R A 7 6 5 4 3 2 1 0 ACK ACK NO ACK Module driving data line Figure 4-3: I2C Random Access Read Operation Sequential Address Read Operation The sequential address read operation is initiated by either a current address read or random address read operation. After the host receives the first data byte, it responds with an ACK condition. As long as the module receives the ACK condition after a data byte is read, the host can clock out additional data bytes from the module. After the data address reaches FFh, it resets to 00h. The operation is terminated when the host does not provide an ACK condition and initiates a STOP condition. See Figure 4-4. GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 12 of 25 START I2C DATA Block Address Read Data Byte (N+1) Data Byte (N) Data Byte (N+M) STOP 7 6 5 4 3 2 1 R A 7 6 5 4 3 2 1 0 A 7 6 5 4 3 2 1 0 A 7 6 5 4 3 2 1 0 ACK ACK Host driving data line ACK NO ACK Module driving data line Figure 4-4: I2C Sequential Read Access Operation 4.2 Serial Interface Memory Map Module identification and digital diagnostic monitoring information is accessible through the memory map addresses shown in this section. The items below outline the different block addresses of the module: * Block address A0h contains serial ID information of the module. * Block address A2h contains alarm flags, warning flags, thresholds and real-time digital diagnostic features set for channel 1. * Block address B2h contains alarm flags, warning flags, thresholds and real-time digital diagnostic features set for channel 2. The 16-bit digital diagnostic monitoring information is internally calibrated over Gennum's specified operating temperature and voltage. Alarm and warning threshold values are calibrated in the same manner and can be interpreted as defined below. Internally measured module temperature is represented as a 16-bit signed two's complement value in increments of 1/256 degrees Celsius, yielding a total range of -128C to +128C. To calculate the temperature, treat the two's complement value as a 16-bit unsigned integer and divide it by 256. If the result is greater or equal to 128, subtract 256 from the result. See Table 4-1 for temperature conversion examples. Table 4-1: Temperature Conversion Examples MSB (BIN) LSB (BIN) Temperature (C) 01000000 00000000 64C 01000000 00001111 64.059C 01011111 00000000 95C 11110110 00000000 -10C 11011000 00000000 -40C Internally measured module supply voltage is represented as a 16-bit unsigned integer with the voltage defined as the full 16-bit value with the LSB equal to 100V, yielding a total range of 0 to +6.55V. To calculate the supply voltage, multiply the 16-bit unsigned integer by 100V. Internally measured RX optical power is represented as a 16-bit unsigned integer with the power defined as the full 16-bit value with the LSB equal to 0.1W, yielding a total GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 13 of 25 range of 0 to 6.5535 mW (~ -40 to +8.2 dBm). To calculate the RX optical power, multiply the 16-bit unsigned integer by 0.1W. Table 4-2: Module Identification Fields Block Address: A0h Address Size Name Description and Value 0 1 Identifier Type of serial transceiver. 82h 1 1 Ext. Identifier Extended identifier of type of serial transceiver. 04h 2 1 Connector Code for connector type. 07h for LC connectors. 3 1 Standards Compliance 41h, for SMPTE259M/344M/292M/424M and SMPTE 297M. 4-10 8 Transceiver Code Code for electronic compatibility or optical compatibility. Not applicable for GO2920. 11 1 Encoding Code for serial encoding algorithm. Value: 03H for NRZ. 12 1 BR, Nominal Nominal bit rate, units of 100 Mbps, 1Eh for 3Gbps. 13 1 Reserved Xxh 14 1 Length (9mm) km Link length supported for standard SFM, units of km, 1Eh (30km at HD-SDI with GO2922). 15 1 Length (9mm) Link length supported for standard SFM, units of 100 m, 00h 16 1 Length (50mm) Link length supported for 50/125 mm fiber, units of 10 m. 00h 17 1 Length (62.5mm) Link length supported for 62.5/125 mm fiber, units of 10 m. 00h 18 1 Length (Copper) Link length supported for copper, units of meters. 00h 19 1 Reserved Xxh 20-35 16 Vendor name SFP with OM transceiver vendor name (ASCII). G E N N U M 20 1 G 47h 21 1 E 45h 22 1 N 4Eh 23 1 N 4Eh 24 1 U 55h 25 1 M 4Dh 26-35 10 - 20h for each byte GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 14 of 25 Table 4-2: Module Identification Fields (Continued) Block Address: A0h Address Size Name Description and Value 36 1 Reserved - 37-39 3 Vendor OUI SFP with OM transceiver vendor IEEE company ID. 00 00 00h 40-55 16 Vendor PN Part number provided by SFP with OM transceiver vendor. G O 2 9 2 0 C M 40 1 G 47h 41 1 O 4Fh 42 1 2 32h 43 1 9 39h 44 1 2 32h 45 1 0 30h 46 1 C 43h 47 1 M 4Dh 48-55 9 56-58 3 Reserved - 59 1 Vendor Rev Revision level for part number provided by vendor. 60-61 2 NA - 62 1 Reserved Xxh 63 1 CC_BASE Check code for Base ID Fields (The value of the lower 8 bits of the sum of the contents from address 0 to 62). 64-65 2 Options Indicates which optional SFP with OM signals are implemented. 64 1 Reserved Xxh 65 1 - x000001xh 66 1 BR, max Upper bit rate margin, units of %, 5h. 67 1 BR, min Lower bit rate margin, units of %, 5Fh. 68-83 16 Vendor SN Serial number provided by vendor (ASCII) 84-85 2 Year Manufacturing date code (ASCII). 86-87 2 Month Manufacturing date code (ASCII). 88-89 2 Day Manufacturing date code (ASCII). 90-91 2 Blank - 92 1 Calibration flag 28h for calibrated average input power 20h GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 15 of 25 Table 4-2: Module Identification Fields (Continued) Block Address: A0h Address Size Name Description and Value 93 1 - 90h, Enhanced alarm/warning flags 94 1 Reserved Xxh 95 1 CC_EXT Check code for the Extended ID Fields (The value of the lower 8 bits of the sum of the contents from address 64 to 94) 96-127 32 Reserved Vendor specific Table 4-3: Alarms and Warning Thresholds Block Address: A2h for Receive Channel 1, B2h for Receive Channel 2 Address Size Name Description and Value 0-1 2 Temp High Alarm MSB at lower address. 70C case temp. 2-3 2 Temp Low Alarm MSB at lower address. 0C case temp. 4-5 2 Temp High Warning MSB at lower address. 65C case temp. 6-7 2 Temp Low Warning MSB at lower address. 5C case temp. 8-9 2 Supply Voltage High Alarm MSB at lower address. 3.6V 10-11 2 Supply Voltage Low Alarm MSB at lower address. 3.0V 12-13 2 Supply Voltage High Warning MSB at lower address. 3.47V 14-15 2 Supply Voltage Low Warning MSB at lower address. 3.14V 16-31 16 N/A - 32-33 2 Rx Power High Alarm MSB at lower address. 0dBm. 34-35 2 Rx Power Low Alarm MSB at lower address. -20dBm. 36-37 2 Rx Power High Warning MSB at lower address. -2dBm. 38-39 2 Rx Power Low Warning MSB at lower address. -18dBm. 40-95 56 Reserved. - GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 16 of 25 Table 4-4: Alarms and Real Time Diagnostic information Block Address: A2h for Receive Channel 1, B2h for Receive Channel 2 Adress Size 96 1 Temperature MSB Internally measured module temperature (approximately case temp + 12C) 97 1 Temperature LSB Internally measured module temperature (approximately case temp + 12C) 98 1 VCC MSB Internally measured module supply voltage 99 1 VCC LSB Internally measured module supply voltage 100-103 4 N/A - 104 1 Rx Power MSB Internally measured Rx power 105 1 Rx Power LSB Internally measured Rx power 106-109 9 Reserved - 110 1 Reserved Bit 7-2 LOS Bit 1: Indicates Rx_LOS state Data_Ready Bit 0 Temp Update Bit 7 goes to high after a temperature update VCC Update Bit 6 goes to high after a VCC update Reserved Bit 5-4 Rx Power Update Bit 3 goes to high after a Rx input power update Reserved Bit 0-2 Temp High Alarm Flag Bit 7, set when the internal temperature exceeds the high temp alarm threshold Temp Low Alarm Flag Bit 6, set when the internal temperature goes below the low temp alarm threshold Supply Voltage High Alarm Flag Bit 5, set when the internal VCC exceeds the supply voltage high alarm threshold Supply Voltage Low Alarm Flag Bit 4, set when the internal VCC goes below the supply voltage low alarm threshold N/A Bit 0-3 Rx Power High Alarm Flag Bit 7, set when the monitored Rx power exceeds the Rx power high alarm threshold Rx Power Low Alarm Flag Bit 6, set when monitored Rx power current goes below the Rx power low alarm threshold Reserved Bit 0-5 111 112 113 1 1 1 Name Description and Value GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 17 of 25 Table 4-4: Alarms and Real Time Diagnostic information (Continued) Block Address: A2h for Receive Channel 1, B2h for Receive Channel 2 Adress Size 114-115 2 Reserved - 116 1 Temp High Warning Flag Bit 7, set when the internal temperature exceeds the high temp warning threshold Temp Low Warning Flag Bit 6, set when the internal temperature goes below the low temp warning threshold Supply Voltage High Warning Flag Bit 5, set when the internal VCC exceeds the supply voltage high warning threshold Supply Voltage Low Warning Flag Bit 4, set when the internal VCC goes below the supply voltage low warning threshold N/A Bit 0-3 Rx Power High Warning Flag Bit 7, set when the monitored Rx power exceeds the Rx power high warning threshold Rx Power Low Warning Flag Bit 6, set when the monitored Rx power goes below the Rx power low warning threshold Reserved Bit 0-5 Reserved - 117 118-127 1 10 Name Description and Value Table 4-5: Writeable Area Block Address: B2h Address Size Name Description and Value 128-247 120 Writeable Area - 248-255 8 Reserved - GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 18 of 25 5. Application Reference Design 5.1 Typical Application Circuit Figure 5-1 shows a typical application circuit for the GO2920. To GS2975A Reclocker Differential GO2920 NC 20 RD2- NC 19 RD2+ NC 18 4 VEE VEE 17 5 I2C CLK VCC_RX2 16 6 I C DATA VCC_RX1 15 7 VEE VEE 14 8 NC RD1+ 13 9 NC RD1- 12 10 NC VEE 11 1 VEE RD2- 2 RD2+ VCC_3V3 3 VCC_3V3 4.7k 4.7k I2C CLK I2C DATA 2 VCC_3V3 100nF 100nF RD1+ RD1- 100nF Differential To GS2975A Reclocker Figure 5-1: Typical Application Circuit GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 19 of 25 6. References and Relevant Standards Table 6-1: References and Relevant Standards INF-8074i Rev 1.0 SFP (Small Formfactor Pluggable) Transceiver SMPTE 259M-2008 SDTV Digital Signal/Data - Serial Digital Interface SMPTE 292M-2008 1.5 Gb/s Signal / Data Serial Interface SMPTE 297-2006 Serial Digital Fiber Transmission System for SMPTE 259M, SMPTE 344M, SMPTE 292 and SMPTE 424M Signals SMPTE 344M-2000 540 Mb/s Serial Digital Interface SMPTE 424M-2006 3 Gb/s Signal/Data Serial Interface GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 20 of 25 7. Package Information 7.1 Package Dimensions A common mechanical outline, as shown in Figure 7-1, is used for all SFP modules. CH CH Figure 7-1: Common SFP Package Outline GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 21 of 25 7.2 Marking Information Figure 7-2 illustrates the markings on the GO2920. Table 7-1 provides a description of the parameters in the marking diagram. Burlington, ON Canada L7R 3Y3 GO2920-CM S/N ZZZZZZZZ PC-ABCD-1270-1610 yyyyWww Figure 7-2: GO2920 Marking Diagram Table 7-1: Marking Parameter Description Parameter Description ZZZZZZZZ 8-digit serial number. yyyyWww Date code. Example: 2008W36 GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 22 of 25 7.3 PCB Layout Recommendations Notes: 1. Datum and basic dimensions established by customer 2. Pads and vias are chassis-ground in 11 places 3. Through-holes and plating are optional Figure 7-3: Host PCB Layout GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 23 of 25 Figure 7-4: Detailed Host PCB Layout GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 24 of 25 DOCUMENT IDENTIFICATION CAUTION DATA SHEET ELECTROSTATIC SENSITIVE DEVICES The product is in production. Gennum reserves the right to make changes to the product at any time to improve reliability, function or design, in order to provide the best product possible. DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION GENNUM CORPORATE HEADQUARTERS Phone: +1 (905) 632-2996 Fax: +1 (905) 632-2055 4281 Harvester Road, Burlington, Ontario L7L 5M4 Canada E-mail: corporate@gennum.com www.gennum.com OTTAWA SNOWBUSH IP - A DIVISION OF GENNUM GERMANY 232 Herzberg Road, Suite 101 Kanata, Ontario K2K 2A1 Canada 439 University Ave. Suite 1700 Toronto, Ontario M5G 1Y8 Canada Hainbuchenstrae 2 80935 Muenchen (Munich), Germany Phone: +1 (613) 270-0458 Phone: +1 (416) 925-5643 Fax: +49-89-35804653 Fax: +1 (613) 270-0429 Fax: +1 (416) 925-0581 E-mail: gennum-germany@gennum.com CALGARY E-mail: sales@snowbush.com 3553 - 31st St. N.W., Suite 210 Calgary, Alberta T2L 2K7 Canada Web Site: http://www.snowbush.com Phone: +1 (403) 284-2672 UNITED KINGDOM North Building, Walden Court Parsonage Lane, Bishop's Stortford Hertfordshire, CM23 5DB United Kingdom MEXICO 288-A Paseo de Maravillas Jesus Ma., Aguascalientes Mexico 20900 Phone: +49-89-35831696 NORTH AMERICA WESTERN REGION 691 South Milpitas Blvd., Suite #200 Milpitas, CA 95035 United States Phone: +1 (408) 934-1301 Fax: +1 (408) 934-1029 Phone: +1 (416) 848-0328 E-mail: naw_sales@gennum.com JAPAN KK NORTH AMERICA EASTERN REGION Fax: +44 1279 714171 Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku, Tokyo, 160-0023 Japan INDIA Phone: +81 (03) 3349-5501 #208(A), Nirmala Plaza, Airport Road, Forest Park Square Bhubaneswar 751009 India Fax: +81 (03) 3349-5505 Web Site: http://www.gennum.co.jp KOREA Phone: +91 (674) 653-4815 TAIWAN Fax: +91 (674) 259-5733 6F-4, No.51, Sec.2, Keelung Rd. Sinyi District, Taipei City 11502 Taiwan R.O.C. 8F Jinnex Lakeview Bldg. 65-2, Bangidong, Songpagu Seoul, Korea 138-828 Phone: +44 1279 714170 E-mail: gennum-japan@gennum.com Phone: (886) 2-8732-8879 Fax: (886) 2-8732-8870 4281 Harvester Road Burlington, Ontario L7L 5M4 Canada Phone: +1 (905) 632-2996 Fax: +1 (905) 632-2055 E-mail: nae_sales@gennum.com Phone: +82-2-414-2991 Fax: +82-2-414-2998 E-mail: gennum-korea@gennum.com E-mail: gennum-taiwan@gennum.com Gennum Corporation assumes no liability for any errors or omissions in this document, or for the use of the circuits or devices described herein. The sale of the circuit or device described herein does not imply any patent license, and Gennum makes no representation that the circuit or device is free from patent infringement. All other trademarks mentioned are the properties of their respective owners. GENNUM and the Gennum logo are registered trademarks of Gennum Corporation. (c) Copyright 2009 Gennum Corporation. All rights reserved. www.gennum.com GO2920 Dual Channel Video Optical Receiver Module Data Sheet 40289 - 4 October 2009 25 of 25 25