F i n i s a r. Digital Diagnostic Monitoring Interface for XFP Optical Transceivers. Application Note AN Overview

Transcription

1 Application Note AN-2035 Digital Diagnostic Monitoring Interface for XFP Optical Transceivers Overview This Application Note efines Finisar implementation of the XFP 2-wire serial interface, which is use for serial ID, igital iagnostics, an certain control functions. The 2-wire serial interface is manatory for all XFP moules an it is efine in the XFP MSA Specification. It is moele largely after the igital iagnostics monitoring interface propose for the SFP an GBIC optical transceivers an efine in SFF raft ocument SFF-8472 Rev 9.3, which in turn is an extension of the original serial ID systems efine for the GBIC an SFP transceivers. One major ifference, however, is that the memory structure is change to use a single 2-wire interface ar. IMPORTANT: The igital iagnostics functionality an memory maps escribe in this ocument apply to Beta- an Prouction-level units only. Please contact Finisar for information on Alpha-level units. As with GBIC an SFP transceivers, the XFP serial interface uses the 2-wire serial CMOS EEPROM protocol efine for the ATMEL AT24C01A/02/04 family of components. When the serial protocol is activate, the host generates the serial clock signal (SCL pin). The positive ege clocks ata into those segments of the memory map that are not write-protecte within the XFP transceiver. The negative ege clocks ata from the XFP transceiver. The serial ata signal (SDA pin) is bi-irectional for serial ata transfer. The host uses SDA in conjunction with SCL to mark the start an en of serial protocol activation. The memories are organize as a series of 8-bit ata wors that can be are iniviually or sequentially. The 2-wire serial interface provies sequential or ranom acc to 8 bit parameters, are from 00 to the maximum ar of the memory. The structure of the memory map is shown in Figure 1. The normal 256-Byte I2C ar space is ivie into lower an upper blocks of 128 Bytes. The lower block of 128 Bytes is always irectly available an is use for the iagnostics an control functions escribe in this ocument that must be acce repeately. One exception to this is that the stanar moule ientifier byte efine in the GBIC an SFP transceivers is locate in Byte 0 of the memory map (in the iagnostics space) to allow software evelope for multiple moule types to have a common branching ecision point. This byte is repeate in the Serial ID section so that it also appears in the expecte relationship to other serial ID bits. Multiple blocks of memories are available in the upper 128 Bytes of the ar space. These are iniviually are through a table select Byte which the user enters into a location in the lower ar space. Thus, there is a total available ar space of 128 * 256 = 32 Kbytes in this upper memory space. The upper ar space tables are use for l frequently acce functions such as serial ID, user writable EEPROM, reserve EEPROM an iagnostics an control spaces for future stanars efinition, as well as ample space for venor specific functions. These are allocate as follows: Finisar Corporation AN-2035 Rev G 18-May-2005 Page 1 of 19

2 Table : Table 01h: Table 02h: Table 03h 7Fh: Table 80h FFh: Reserve for future iagnostic an control functions Serial ID EEPROM User-writable EEPROM Finisar-specific internal functions (not accible to the user) Reserve The etails of each memory space are escribe in the XFP MSA ocument. All 2-Wire registers are rea with bit 7 the MSB first. 2 Wire Serial Interface Ar A0h 0 - Digital Diagnostic Functions Byte Passwor Entry Table Select Byte Entry Table Reserve for Future Diagnostic Functions Table 01h XFP MSA Serial ID Data Venor Specific 128- Table 02h User EEPROM Data Tables 03h - 7Fh Venor Finisar Specific Functions Internal Functions Tables 80h -FFh Reserve ID Data 255 Figure 1: XFP 2-Wire Serial Interface Memory Map The memory structure also provies for an optional passwor entry location in the lower memory space that may be use to protect user-writable memory (Table 02h). A passwor is not require to rea any serial ID or iagnostics information in the lower memory ar space or in Tables 02h. A passwor is not require to write any controls efine in the igital iagnostic functions escribe in the MSA ocument either. A passwor (entere into bytes ) is require to allow write acc to the User EEPROM Table (02h). The efault passwor is h per the XFP MSA, an it can be change by the host manufacturer by writing the new passwor into bytes when the correct ol passwor has been written into bytes The host passwor must be in the range of to 7FFFFFFFh. The 2-wire serial interface ar of the XFP moule is X (A0h). In orer to allow acc to multiple XFP moules on the same 2-wire serial bus, the XFP pin-out inclues a MOD_DESEL or moule eselect pin. This pin (which is pulle high or eselecte in the moule) must be hel low by the host to select the moule of interest an allow communication over the 2-wire serial interface. The moule oes not respon to or accept 2-wire serial bus instructions unl it is selecte. Finisar Corporation AN-2035 Rev G 18-May-2005 Page 2 of 19

3 Description of Finisar Memory Map Contents Prouct: FTRX-1411M3 Type Coes: NVE: Non-volatile EEPROM. Rea only by Customer VH: Volatile Host Entry Fiel. Set to on power up or reset unl note. Rea/Write by Host VHW: Volatile Host Write Fiel. Set to on power up or reset unl note. Write only by Host VHR: Volatile Host Rea Fiel. Set to on power up or reset unl note. Rea only by Host R: Reserve. Ignore write, Return on rea. Lower Memory Map: I2C Ar: A0h, Bytes Byte Ar Bit Ar Type Coe Size (Bytes) or (bits) Fiel Name Description of Fiel Value Value Meaning 0 NVE 1B Ientifier Type of serial transceiver 06h XFP Signal Conitioner Control VH 4b Data Rate Control xxxxb Ignore 3 VHW 1b Reserve N/A Reserve 2 VH 1b Line-sie Loopback Control. 1b actuates loopback of optical input to optical output. 0b Not supporte, ignore write, rea back as 0b 1 VH 1b XFI Loopback Control. 1b actuates loopback of electrical input to electrical output xb Power up to 0b 0 VH 1b Signal Conitioner Control 0b Normal REFCLK moe only supporte. Ignore write, rea back as 0b Flag Threshols 2-3 NVE 2B Temp High Alarm Threshol for alarm C (assumes 3 C accuracy) 4-5 NVE 2B Temp Low Alarm Threshol for alarm C (assumes 3 C accuracy) 6-7 NVE 2B Temp High Warning Threshol for warn C (assumes 5 C accuracy) 8-9 NVE 2B Temp Low Warning Threshol for warn C (assumes 5 C accuracy) R 8B Reserve Reserve All Ignore write; return on rea. 18- NVE 2B Bias High Alarm Threshol for alarm ma NVE 2B Bias Low Alarm Threshol for alarm ma NVE 2B Bias High Warning Threshol for warn ma NVE 2B Bias Low Warning Threshol for warn ma NVE 2B TX Power High Alarm Threshol for alarm Bm (assumes 2B accuracy) NVE 2B TX Power Low Alarm Threshol for alarm Bm (assumes 2B accuracy) NVE 2B TX Power High Warning Threshol for warn Bm (assumes 2B accuracy) NVE 2B TX Power Low Warning Threshol for warn Bm (assumes 2B accuracy) Finisar Corporation AN-2035 Rev G 18-May-2005 Page 3 of 19

4 NVE 2B RX Power High Alarm Threshol for alarm Bm (assumes 1.5B accuracy) NVE 2B RX Power Low Alarm Threshol for alarm Bm NVE 2B RX Power High Threshol for warn Bm Warning (assumes 1.5B accuracy) NVE 2B RX Power Low Warning Threshol for warn Bm NVE 2B AUX1 High Alarm Threshol for alarm V NVE 2B AUX1Low Alarm Threshol for alarm V NVE 2B AUX1 High Warning Threshol for warn V (assumes 50mV accuracy) NVE 2B AUX1Low Warning Threshol for warn V (assumes 50mV accuracy) NVE 2B AUX2 High Alarm Threshol for alarm V NVE 2B AUX2 Low Alarm Threshol for alarm V NVE 2B AUX2 High Warning Threshol for warn V (assumes 50mV accuracy) NVE 2B AUX2 Low Warning Threshol for warn V (assumes 50mV accuracy) 7-4 NVE 4b VCC2 min with Reg Min. VCC2 with 0000b VPS not supporte. Return Regulator 0000b=1.8V 3-0 VH 4b VCC2 Host VCC2 Supplie by xxxxb Written an rea by host. Host Ignore an return 0000b VH 4b VCC2 min in Bypass Min. VCC2 in 0000b VPS not supporte. Return Regulator 0000b=1.8V 3-1 VH 3b Reserve Reserve 000b Ignore write, return 000b 0 VH 1b VPS Bypass Control Turns VPS Bypass 0b VPS not supporte. Ignore on or off write, return 0b 60- R 10B Reserve Reserve All Ignore write; return on 69 rea. 70 VH 1B Acceptable BER For FEC systems Not Supp. Ignore W, return. 71 VH 1B Actual BER For FEC systems Not Supp. Ignore W, return VH 2B Wavelength Set Host wavelength set 00 Not Supp. Ignore write, return VH 2B Wavelength Error Returne 00 Not Supp., return wavelength error 76 VH 1B FEC Amplitue Aj Set Amp Slice Not Supp. Ignore W, return. 77 VH 1B FEC Phase Aj Set Phase Slice Not Supp. Ignore W, return R 2B Reserve Reserve All VHR 8B Latche Interrupt Flag Iniviual bits set xb Bits per XFPMSA Ignore write; return on rea. Latche on flag conition. Cleare on host rea. (See MSA) VH 8B Interrupt Masking Bits Iniviual bits set per XFPMSA 0b Set an reaable by host. Cleare at power-up or reset 96- VHR 2B Temperature Reaout MSB in First Byte xxxxh Reporte Temperature Finisar Corporation AN-2035 Rev G 18-May-2005 Page 4 of 19

5 97 Value in Units Define in MSA 98- VHR 2B Reserve A/D Chan. Reserve 00 Report 00 on rea VHR 2B TX Bias A/D Chan MSB in First Byte xxxxh Reporte TX Bias Value in Units Define in MSA VHR 2B TX Power A/D Chan MSB in First Byte xxxxh Reporte TX Power Value in Units Define in MSA VHR 2B RX Power A/D Chan MSB in First Byte xxxxh Reporte RX Power Value in Units Define in MSA VHR 2B AUX1 A/D Chan MSB in First Byte xxxxh Report +3.3V Supply voltage VHR 2B AUX2 A/D Chan MSB in First Byte xxxxh Report +5V Supply voltage. Signal Conitioner Control VHR 1b TX Disable State Reports TXDIS xb Ignore writes 6 VH 1b Soft TX Disable OR s with input pin 0b Rea an write by host, power up an reset to 0b 5 VHR 1b MOD-NR State Reports MOD_NR xb Ignore writes 4 VHR 1b P_Down State Reports P_Down xb Ignore writes 3 VH 1b Soft P_Down OR s with input pin 0b Rea an write by host, power up an reset to 0b, Do not reset 2 VHR 1b Interrupt State Reports Interrupt xb Ignore writes 1 VHR 1b LOS State Reports LOS xb Ignore writes 0 VHR 1b Data Not Reay Set low when A/D xb Ignore writes reay VH 1b TX_NR Ientifies TX_NR xb Ignore writes. Set if TX CDR loss of lock. 6 VH 1b TX_Fault Ientifies TX_Fault 0b Ignore writes. Conitions for set TBD. Set at 0b for now. 5 VH 1b TX_CDR not locke Ientifies TX_LOL xb Ignore writes. 4 VH 1b RX_NR Ientifies RX_NR xb Ignore writes. Set if RX CDR loss of lock. 3 VH 1b RX_CDR not locke Ientifies RX_LOL xb Ignore writes. 2-0 R 3b Reserve Reserve 000b Ignore writes, report 000b R 6B Reserve Ignore writes, report R 7b Reserve Reserve 0b Ignore writes, report b. 0 VH 1b Error Checking Switches PEC xb Host sets to 1b to enable packet error checking. Power up an reset to 0b VH 4B New Passwor entry. Host may enter to change Passwor Changes host passwor value if current correct passwor entere in Power up an reset to Finisar Corporation AN-2035 Rev G 18-May-2005 Page 5 of 19

6 VHW 4B Passwor entry. Host may enter Passwor to Acc Protecte Area 127 VHW 1B Table Select Host enters to select upper memory table 01h Allows Write Acc to Customer EEPROM. Power up an reset to Defines Table for subsequent upper memory map reas. Defaults to 01h on Power an reset. Upper Memory Map: I2C Ar: A0h, Table 0 Reserve by the XFP MSA. Moule returns 0 for any rea from this area, an ignore all writes. Upper Memory Map: I2C Ar: A0h, Table 1 Serial ID Section Rea only by Host, all Nonvolatile Byte Ar Bit Ar Size (Bytes) or (bits) Fiel Name Description of Fiel Value Value Meaning 128 1B Ientifier Type of serial transceiver b Ext. Ientifier - Defines Moule Moule Power Power Class Class b Ext. Ientifier - CDR Ientifies presence of a CDR b Ext. Ientifier - Ientifies nee for REFCLK REFCLK b CLEI Coe Present Inicates if CLEI Coe is present in Table 2 Finisar Corporation AN-2035 Rev G 18-May-2005 Page 6 of 19 06h XFP 01b Inicates Power Dissipation < 2.5W uner all specifie operating conitions. 0b Moule contains CDR function b Ext. Ientifier - Reserve Reserve 000b 130 1B Connector Coe for connector type 07h LC B Transceiver Coe for electronic compatibility or optical compatibility 10 Gigabit Ethernet Compliance Coes b 10GBASE-SR 0b 6 1b 10GBASE-LR 1b 5 1b 10GBASE-ER 0b 4 1b Reserve 0b 3 1b 10GBASE-SW 0b 2 1b 10GBASE-LW 1b 1 1b 10GBASE-EW 0b b Reserve 0b 10 Gigabit Fibre Channel Compliance Coes 7 1b 1200-MX-SN-I 0b 6 1b 1200-SM-LL-L 1b 5 1b Extene reach 1550nm 0b 4 1b Intermeiate reach 1310nm 0b 3 1b Reserve 0b 2 1b Reserve 0b 1 1b Reserve 0b 1b 0b Moule oes not nee REFCLK To be supporte on a customer basis. Value is 1b if CLEI Coe is present in Table 2

7 b Reserve 0b 10 Gigabit Copper Link Compliance Coes 7 1b Reserve 0b 6 1b Reserve 0b 5 1b Reserve 0b 4 1b Reserve 0b 3 1b Reserve 0b 2 1b Reserve 0b 1 1b Reserve 0b 0 1b Reserve 0b Lower Spee Link Compliance Coes 7 1b 1000BASE-SX/1xFC MMF 0b 6 1b 1000BASE-LX/1xFC SMF 0b 5 1b 2xFC MMF 0b 4 1b 2xFC SMF 0b 3 1b OC-48-SR 0b 2 1b OC-48-IR 0b 1 1b OC-48-LR 0b 0 1b Reserve 0b SONET/SDH Interconnect Link Compliance Coes 7 1b I-64.1r 1b (OC-192 VSR4-2 support, -1Bm max power) 6 1b I b (OC-192 SR-1 support, -1 Bm max power) 5 1b I-64.2r 0b 4 1b I b 3 1b I b 2 1b I b 1 1b Reserve 0b 0 1b Reserve 0b SONET/SDH Short Haul Link Compliance Coes 7 1b S b 6 1b S-64.2a 0b 5 1b S-64.2b 0b 4 1b S-64.3a 0b 3 1b S-64.3b 0b 2 1b S-64.5a 0b 1 1b S-64.5b 0b 0 1b Reserve 0b SONET/SDH Long Haul Link Compliance Coes 7 1b L b 6 1b L-64.2a 0b 5 1b L-64.2b 0b 4 1b L-64.2c 0b 3 1b L b 2 1b Reserve 0b 1 1b Reserve 0b 0 1b Reserve 0b SONET/SDH Very Long Haul Link Compliance Coes 7 1b V-64.2a 0b 6 1b V-64.2b 0b 5 1b V b 4 1b Reserve 0b 3 1b Reserve 0b 2 1b Reserve 0b Finisar Corporation AN-2035 Rev G 18-May-2005 Page 7 of 19

8 b Reserve 0b 0 1b Reserve 0b Encoing 7 1b 64B/66B 1b 10GE/10GFC Coing 6 1b 8B/10B 1b Not use in stanars but is supporte 5 1b SONET Scramble 1b OC-192 Coing 4 1b NRZ 1b NRZ only supporte 3 1b RZ 0b 2-0 3b Reserve 000b 140 1B BR, minimum Minimum Supporte 63h 9900 Mbps Bitrate (/100Mb) 141 1B BR, maximum Maximum Supporte 6Bh Mbps Bitrate (/100Mb) 142 1B Length (SMF) Link length supporte 0Ah 10km km for 9/125 um fiber, units of km 143 1B Length (E-50um) Link length supporte Not supporte for extene banwith MMF, units of 2 m 144 1B Length (50m) Link length supporte Not supporte for 50/125 mm fiber, units of 1 m 145 1B Length (62.5m) Link length supporte Not supporte for 62.5/125 mm fiber, units of 1 m 146 1B Length (Copper) Link length supporte for copper, units of 1m Not supporte Device Technology b Transmitter Technology 0100b 1310nm DFB laser 3 1b Wavelength Control 0b No wavelength control 2 1b Coole Transmitter 0b Transmitter is not coole 1 1b Detector Type 0b PIN Detector b Tunable Transmitter 0b Transmitter not Tunable 16B Venor name SFP venor name FINISAR (ASCII) blank pae CORP. CDR Support 7 1b CDR Support for 9.95 Gb/s 1b 6 1b CDR Support for 10.3 Gb/s 1b 5 1b CDR Support for 10.5 Gb/s 1b 4 1b CDR Support for 10.7 Gb/s 1b 3 1b CDR Support for 11.1 Gb/s 0b To be supporte in future versions. 2 1b Reserve 0b 1 1b Line-sie Loopback Moe Supporte 0b b XFI Loopback Supporte 1b 3B Venor OUI SFP venor IEEE h company ID 16B Venor PN Part number provie FTRXby venor (ASCII) 1411M3 2B Venor rev Revision level for part 3030h number provie by IEEE assigne Finisar part number Harware revision level fiel not use Finisar Corporation AN-2035 Rev G 18-May-2005 Page 8 of 19

9 venor (ASCII) 2B Wavelength Nominal Laser Wavelength(1/20nm) 6658h 1310nm * (20/nm) B Wavelength Tolerance +/- Wavelength (1/200nm) 0FA0h 20.0nm * (200/nm). Correspons to nm range B Max Case Temp Maximum Case Temperature 46h 70ºC 191 1B CC_BASE Check coe for Base ID Fiels (ares 128 to 190) EXTENDED ID FIELDS B Power Supply Fiels 192 1B Maximum Power Dissipation (/20mW) 7Dh = 2500 mw 193 1B Max. Power Diss. In Power-own (/10mW) 96h = 1500 mw xxh Calculate check coe, low 8 bits of sum of first 64 bytes of Serial ID info b Max. Current on +5V Supply (/50mA) 0111b = 350 ma (actual 320 ma) 0-3 4b Max. Current on +3.3V Supply (/100mA) 0011b = 300 ma (actual 265 ma) 4-7 4b Max. Current on +1.8V Supply (/100mA) 0000b Not use 0-3 4b Max. Current on -5V Supply (-/100mA) 0000b Not use 16B Venor SN Serial number e.g., Encoe serial number provie by venor A (ASCII) blank pae 6B Date coe Venor s e.g., yymm manufacturing ate B Lot Coe Venor lot coe 2020h May be blank Diagnostic Monitoring / Variable Power Supply / Special Function Support 7 1b Reserve 0b Reserve 6 1b Reserve 0b Reserve 5 1b Reserve 0b Reserve 4 1b FEC BER Support 0b No BER Support 3 1b Receive power measurement type 1b Average Power 2 1b Reserve 0b Reserve 1-0 2b Reserve 00b Will be Reserve Enhance Options b Moule supports VPS 0b Not supporte 6 1b Soft TX_DISABLE 1b Soft TX_DISABLE is supporte 5 1b Soft PWR_DWN 1b Soft PWR_DWN is supporte 4 1b Supports VPS LV Regulator Moe 0b We are not supporting VPS 3 1b Supports VPS Bypasse Regulator Moe 0b We are not supporting VPS 2 1b Active FEC Control 0b Not supporte. 1 1b Wavelength Tunability 0b Not supporte 0 1b Optional CMU Moe 0b Not supporte b Aux A/D Input b +3.3V Supply Monitor on Aux A/D b Aux A/D Input b +5V Supply Monitor on Aux A/D B CC_EXT Check coe for the Extene ID Fiels (ares 128 to 222) xxh Calculate check coe. Low 8 bits of sum of Bytes Finisar Corporation AN-2035 Rev G 18-May-2005 Page 9 of 19

10 Data Ar Size (Bytes) Fiel Name Customer Specific Fiels Description of Fiel Value Value Meaning 32 TBD TBD All at present Upper Memory Map: I2C Ar: A0h, Table 02h User-writable EEPROM. A passwor (entere into bytes ) is require to allow write acc to this table. The efault passwor is h per the XFP MSA, an it can be change by the user (i.e., host manufacturer) by writing the new passwor into bytes when the correct ol passwor has been written into bytes The host passwor must be in the range of to 7FFFFFFFh. This table is always reaable (passwor not require). Upper Memory Map: I2C Ar: A0h, Table 03h 7Fh Use by Finisar for internal parameter storage. Not reaable or writable without Finisar Passwor. Finisar Corporation AN-2035 Rev G 18-May-2005 Page 10 of 19

11 Description of Finisar Memory Map Contents Prouct: FTRX-1411D3 Type Coes: NVE: Non-volatile EEPROM. Rea only by Customer VH: Volatile Host Entry Fiel. Set to on power up or reset unl note. Rea/Write by Host VHW: Volatile Host Write Fiel. Set to on power up or reset unl note. Write only by Host VHR: Volatile Host Rea Fiel. Set to on power up or reset unl note. Rea only by Host R: Reserve. Ignore write, Return on rea. Lower Memory Map: I2C Ar: A0h, Bytes Byte Ar Bit Ar Type Coe Size (Bytes) or (bits) Fiel Name Description of Fiel Value Value Meaning 0 NVE 1B Ientifier Type of serial transceiver 06h XFP Signal Conitioner Control VH 4b Data Rate Control xxxxb Ignore 3 VHW 1b Reserve N/A Reserve 2 VH 1b Line-sie Loopback Control. 1b actuates loopback of optical input to optical output. 0b Not supporte, ignore write, rea back as 0b 1 VH 1b XFI Loopback Control. 1b actuates loopback of electrical input to electrical output xb Power up to 0b 0 VH 1b Signal Conitioner Control 0b Normal REFCLK moe only supporte. Ignore write, rea back as 0b Flag Threshols 2-3 NVE 2B Temp High Alarm Threshol for alarm C (assumes 3 C accuracy) 4-5 NVE 2B Temp Low Alarm Threshol for alarm C (assumes 3 C accuracy) 6-7 NVE 2B Temp High Warning Threshol for warn C (assumes 5 C accuracy) 8-9 NVE 2B Temp Low Warning Threshol for warn C (assumes 5 C accuracy) R 8B Reserve Reserve All Ignore write; return on rea. 18- NVE 2B Bias High Alarm Threshol for alarm ma NVE 2B Bias Low Alarm Threshol for alarm ma NVE 2B Bias High Warning Threshol for warn ma NVE 2B Bias Low Warning Threshol for warn ma NVE 2B TX Power High Alarm Threshol for alarm Bm (assumes 2B accuracy) NVE 2B TX Power Low Alarm Threshol for alarm Bm (assumes 2B accuracy) NVE 2B TX Power High Warning Threshol for warn Bm (assumes 2B accuracy) NVE 2B TX Power Low Warning Threshol for warn Bm (assumes 2B accuracy) Finisar Corporation AN-2035 Rev G 18-May-2005 Page 11 of 19

12 NVE 2B RX Power High Alarm Threshol for alarm Bm (assumes 1.5B accuracy) NVE 2B RX Power Low Alarm Threshol for alarm Bm NVE 2B RX Power High Threshol for warn Bm Warning (assumes 1.5B accuracy) NVE 2B RX Power Low Warning Threshol for warn Bm NVE 2B AUX1 High Alarm Threshol for alarm V NVE 2B AUX1Low Alarm Threshol for alarm V NVE 2B AUX1 High Warning Threshol for warn V (assumes 50mV accuracy) NVE 2B AUX1Low Warning Threshol for warn V (assumes 50mV accuracy) NVE 2B AUX2 High Alarm Threshol for alarm V NVE 2B AUX2 Low Alarm Threshol for alarm V NVE 2B AUX2 High Warning Threshol for warn V (assumes 50mV accuracy) NVE 2B AUX2 Low Warning Threshol for warn V (assumes 50mV accuracy) 7-4 NVE 4b VCC2 min with Reg Min. VCC2 with 0000b VPS not supporte. Return Regulator 0000b=1.8V 3-0 VH 4b VCC2 Host VCC2 Supplie by xxxxb Written an rea by host. Host Ignore an return 0000b VH 4b VCC2 min in Bypass Min. VCC2 in 0000b VPS not supporte. Return Regulator 0000b=1.8V 3-1 VH 3b Reserve Reserve 000b Ignore write, return 000b 0 VH 1b VPS Bypass Control Turns VPS Bypass 0b VPS not supporte. Ignore on or off write, return 0b 60- R 10B Reserve Reserve All Ignore write; return on 69 rea. 70 VH 1B Acceptable BER For FEC systems Not Supp. Ignore W, return. 71 VH 1B Actual BER For FEC systems Not Supp. Ignore W, return VH 2B Wavelength Set Host wavelength set 00 Not Supp. Ignore write, return VH 2B Wavelength Error Returne 00 Not Supp., return wavelength error 76 VH 1B FEC Amplitue Aj Set Amp Slice Not Supp. Ignore W, return. 77 VH 1B FEC Phase Aj Set Phase Slice Not Supp. Ignore W, return R 2B Reserve Reserve All VHR 8B Latche Interrupt Flag Iniviual bits set xb Bits per XFPMSA Ignore write; return on rea. Latche on flag conition. Cleare on host rea. (See MSA) VH 8B Interrupt Masking Bits Iniviual bits set per XFPMSA 0b Set an reaable by host. Cleare at power-up or reset 96- VHR 2B Temperature Reaout MSB in First Byte xxxxh Reporte Temperature Finisar Corporation AN-2035 Rev G 18-May-2005 Page 12 of 19

13 97 Value in Units Define in MSA 98- VHR 2B Reserve A/D Chan. Reserve 00 Report 00 on rea VHR 2B TX Bias A/D Chan MSB in First Byte xxxxh Reporte TX Bias Value in Units Define in MSA VHR 2B TX Power A/D Chan MSB in First Byte xxxxh Reporte TX Power Value in Units Define in MSA VHR 2B RX Power A/D Chan MSB in First Byte xxxxh Reporte RX Power Value in Units Define in MSA VHR 2B AUX1 A/D Chan MSB in First Byte xxxxh Report +3.3V Supply voltage VHR 2B AUX2 A/D Chan MSB in First Byte xxxxh Report +5V Supply voltage. Signal Conitioner Control VHR 1b TX Disable State Reports TXDIS xb Ignore writes 6 VH 1b Soft TX Disable OR s with input pin 0b Rea an write by host, power up an reset to 0b 5 VHR 1b MOD-NR State Reports MOD_NR xb Ignore writes 4 VHR 1b P_Down State Reports P_Down xb Ignore writes 3 VH 1b Soft P_Down OR s with input pin 0b Rea an write by host, power up an reset to 0b, Do not reset 2 VHR 1b Interrupt State Reports Interrupt xb Ignore writes 1 VHR 1b LOS State Reports LOS xb Ignore writes 0 VHR 1b Data Not Reay Set low when A/D xb Ignore writes reay VH 1b TX_NR Ientifies TX_NR xb Ignore writes. Set if TX CDR loss of lock. 6 VH 1b TX_Fault Ientifies TX_Fault 0b Ignore writes. Conitions for set TBD. Set at 0b for now. 5 VH 1b TX_CDR not locke Ientifies TX_LOL xb Ignore writes. 4 VH 1b RX_NR Ientifies RX_NR xb Ignore writes. Set if RX CDR loss of lock. 3 VH 1b RX_CDR not locke Ientifies RX_LOL xb Ignore writes. 2-0 R 3b Reserve Reserve 000b Ignore writes, report 000b R 6B Reserve Ignore writes, report R 7b Reserve Reserve 0b Ignore writes, report b. 0 VH 1b Error Checking Switches PEC xb Host sets to 1b to enable packet error checking. Power up an reset to 0b VH 4B New Passwor entry. Host may enter to change Passwor Changes host passwor value if current correct passwor entere in Power up an reset to Finisar Corporation AN-2035 Rev G 18-May-2005 Page 13 of 19

14 VHW 4B Passwor entry. Host may enter Passwor to Acc Protecte Area 127 VHW 1B Table Select Host enters to select upper memory table 01h Allows Write Acc to Customer EEPROM. Power up an reset to Defines Table for subsequent upper memory map reas. Defaults to 01h on Power an reset. Upper Memory Map: I2C Ar: A0h, Table 0 Reserve by the XFP MSA. Moule returns 0 for any rea from this area, an ignore all writes. Upper Memory Map: I2C Ar: A0h, Table 1 Serial ID Section Rea only by Host, all Nonvolatile Byte Ar Bit Ar Size (Bytes) or (bits) Fiel Name Description of Fiel Value Value Meaning 128 1B Ientifier Type of serial transceiver b Ext. Ientifier - Defines Moule Moule Power Power Class Class b Ext. Ientifier - CDR Ientifies presence of a CDR b Ext. Ientifier - Ientifies nee for REFCLK REFCLK b CLEI Coe Present Inicates if CLEI Coe is present in Table 2 Finisar Corporation AN-2035 Rev G 18-May-2005 Page 14 of 19 06h XFP 01b Inicates Power Dissipation < 2.5W uner all specifie operating conitions. 0b Moule contains CDR function b Ext. Ientifier - Reserve Reserve 000b 130 1B Connector Coe for connector type 07h LC B Transceiver Coe for electronic compatibility or optical compatibility 10 Gigabit Ethernet Compliance Coes b 10GBASE-SR 0b 6 1b 10GBASE-LR 1b 5 1b 10GBASE-ER 0b 4 1b Reserve 0b 3 1b 10GBASE-SW 0b 2 1b 10GBASE-LW 1b 1 1b 10GBASE-EW 0b b Reserve 0b 10 Gigabit Fibre Channel Compliance Coes 7 1b 1200-MX-SN-I 0b 6 1b 1200-SM-LL-L 1b 5 1b Extene reach 1550nm 0b 4 1b Intermeiate reach 1310nm 0b 3 1b Reserve 0b 2 1b Reserve 0b 1 1b Reserve 0b 1b 0b Moule oes not nee REFCLK To be supporte on a customer basis. Value is 1b if CLEI Coe is present in Table 2

15 b Reserve 0b 10 Gigabit Copper Link Compliance Coes 7 1b Reserve 0b 6 1b Reserve 0b 5 1b Reserve 0b 4 1b Reserve 0b 3 1b Reserve 0b 2 1b Reserve 0b 1 1b Reserve 0b 0 1b Reserve 0b Lower Spee Link Compliance Coes 7 1b 1000BASE-SX/1xFC MMF 0b 6 1b 1000BASE-LX/1xFC SMF 0b 5 1b 2xFC MMF 0b 4 1b 2xFC SMF 0b 3 1b OC-48-SR 0b 2 1b OC-48-IR 0b 1 1b OC-48-LR 0b 0 1b Reserve 0b SONET/SDH Interconnect Link Compliance Coes 7 1b I-64.1r 0b 6 1b I b 5 1b I-64.2r 0b 4 1b I b 3 1b I b 2 1b I b 1 1b Reserve 0b 0 1b Reserve 0b SONET/SDH Short Haul Link Compliance Coes 7 1b S b 6 1b S-64.2a 0b 5 1b S-64.2b 0b 4 1b S-64.3a 0b 3 1b S-64.3b 0b 2 1b S-64.5a 0b 1 1b S-64.5b 0b 0 1b Reserve 0b SONET/SDH Long Haul Link Compliance Coes 7 1b L b 6 1b L-64.2a 0b 5 1b L-64.2b 0b 4 1b L-64.2c 0b 3 1b L b 2 1b Reserve 0b 1 1b Reserve 0b 0 1b Reserve 0b SONET/SDH Very Long Haul Link Compliance Coes 7 1b V-64.2a 0b 6 1b V-64.2b 0b 5 1b V b 4 1b Reserve 0b 3 1b Reserve 0b 2 1b Reserve 0b 1 1b Reserve 0b 0 1b Reserve 0b Finisar Corporation AN-2035 Rev G 18-May-2005 Page 15 of 19

16 139 Encoing 7 1b 64B/66B 1b 10GE/10GFC Coing 6 1b 8B/10B 1b Not use in stanars but is supporte 5 1b SONET Scramble 1b OC-192 Coing 4 1b NRZ 1b NRZ only supporte 3 1b RZ 0b 2-0 3b Reserve 000b 140 1B BR, minimum Minimum Supporte 63h 9900 Mbps Bitrate (/100Mb) 141 1B BR, maximum Maximum Supporte 69h Mbps Bitrate (/100Mb) 142 1B Length (SMF) Link length supporte 0Ah 10km km for 9/125 um fiber, units of km 143 1B Length (E-50um) Link length supporte Not supporte for extene banwith MMF, units of 2 m 144 1B Length (50m) Link length supporte Not supporte for 50/125 mm fiber, units of 1 m 145 1B Length (62.5m) Link length supporte Not supporte for 62.5/125 mm fiber, units of 1 m 146 1B Length (Copper) Link length supporte for copper, units of 1m Not supporte Device Technology b Transmitter Technology 0100b 1310nm DFB laser 3 1b Wavelength Control 0b No wavelength control 2 1b Coole Transmitter 0b Transmitter is not coole 1 1b Detector Type 0b PIN Detector b Tunable Transmitter 0b Transmitter not Tunable 16B Venor name SFP venor name FINISAR (ASCII) blank pae CORP. CDR Support 7 1b CDR Support for 9.95 Gb/s 1b 6 1b CDR Support for 10.3 Gb/s 1b 5 1b CDR Support for 10.5 Gb/s 1b 4 1b CDR Support for 10.7 Gb/s 1b 3 1b CDR Support for 11.1 Gb/s 0b To be supporte in future versions. 2 1b Reserve 0b 1 1b Line-sie Loopback Moe Supporte 0b b XFI Loopback Supporte 1b 3B Venor OUI SFP venor IEEE h company ID 16B Venor PN Part number provie FTRXby venor (ASCII) 1411D3 2B Venor rev Revision level for part 3030h number provie by venor (ASCII) IEEE assigne Finisar part number Harware revision level fiel not use Finisar Corporation AN-2035 Rev G 18-May-2005 Page 16 of 19

17 B Wavelength Nominal Laser Wavelength(1/20nm) 6658h 1310nm * (20/nm) B Wavelength Tolerance +/- Wavelength (1/200nm) 2710h 20.0nm * (200/nm). Correspons to nm range B Max Case Temp Maximum Case Temperature 46h 70ºC 191 1B CC_BASE Check coe for Base ID Fiels (ares 128 to 190) EXTENDED ID FIELDS B Power Supply Fiels 192 1B Maximum Power Dissipation (/20mW) 7Dh = 2500 mw 193 1B Max. Power Diss. In Power-own (/10mW) 96h = 1500 mw xxh Calculate check coe, low 8 bits of sum of first 64 bytes of Serial ID info b Max. Current on +5V Supply (/50mA) 0111b = 350 ma (actual 320 ma) 0-3 4b Max. Current on +3.3V Supply (/100mA) 0011b = 300 ma (actual 265 ma) 4-7 4b Max. Current on +1.8V Supply (/100mA) 0000b Not use 0-3 4b Max. Current on -5V Supply (-/100mA) 0000b Not use 16B Venor SN Serial number e.g., Encoe serial number provie by venor A (ASCII) blank pae 6B Date coe Venor s e.g., yymm manufacturing ate B Lot Coe Venor lot coe 2020h May be blank Diagnostic Monitoring / Variable Power Supply / Special Function Support 7 1b Reserve 0b Reserve 6 1b Reserve 0b Reserve 5 1b Reserve 0b Reserve 4 1b FEC BER Support 0b No BER Support 3 1b Receive power measurement type 1b Average Power 2 1b Reserve 0b Reserve 1-0 2b Reserve 00b Will be Reserve Enhance Options b Moule supports VPS 0b Not supporte 6 1b Soft TX_DISABLE 1b Soft TX_DISABLE is supporte 5 1b Soft PWR_DWN 1b Soft PWR_DWN is supporte 4 1b Supports VPS LV Regulator Moe 0b We are not supporting VPS 3 1b Supports VPS Bypasse Regulator Moe 0b We are not supporting VPS 2 1b Active FEC Control 0b Not supporte. 1 1b Wavelength Tunability 0b Not supporte 0 1b Optional CMU Moe 0b Not supporte b Aux A/D Input b +3.3V Supply Monitor on Aux A/D b Aux A/D Input b +5V Supply Monitor on Aux A/D B CC_EXT Check coe for the Extene ID Fiels (ares 128 to 222) xxh Calculate check coe. Low 8 bits of sum of Bytes Finisar Corporation AN-2035 Rev G 18-May-2005 Page 17 of 19

18 Data Ar Size (Bytes) Fiel Name Customer Specific Fiels Description of Fiel Value Value Meaning 32 TBD TBD All at present Upper Memory Map: I2C Ar: A0h, Table 02h User-writable EEPROM. A passwor (entere into bytes ) is require to allow write acc to this table. The efault passwor is h per the XFP MSA, an it can be change by the user (i.e., host manufacturer) by writing the new passwor into bytes when the correct ol passwor has been written into bytes The host passwor must be in the range of to 7FFFFFFFh. This table is always reaable (passwor not require). Upper Memory Map: I2C Ar: A0h, Table 03h 7Fh Use by Finisar for internal parameter storage. Not reaable or writable without Finisar Passwor. Finisar Corporation AN-2035 Rev G 18-May-2005 Page 18 of 19

19 References 10 Gigabit Small Form Factor Pluggable Moule (XFP) MSA, rev. 4.0 April 13, Digital Diagnostic Monitoring Interface for Optical Transceivers SFF ocument number: SFF-8472, rev. 9.3 August 4, For More Information Finisar Corporation 1308 Moffett Park Drive Sunnyvale, CA Tel. (408) Fax (408) Finisar Corporation AN-2035 Rev G 18-May-2005 Page 19 of 19