DS1864T+ Maxim Integrated Products, DS1864T+ Datasheet
DS1864T+
Specifications of DS1864T+
Related parts for DS1864T+
DS1864T+ Summary of contents
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... Provides All Optional and Required SFF-8472 MSA EEPROM (Both A0h and A2h Memory) ♦ C-Compatible Serial Interface Applications ♦ Operates from a 3. Supply ♦ -40°C to +95°C Operating Temperature Range ♦ 28-Pin TQFN Package (5mm x 5mm) PART DS1864T DS1864T +Denotes lead-free only package DAC0 19 GND ...
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SFP Laser Controller and Diagnostic IC ABSOLUTE MAXIMUM RATINGS Voltage Range on V Relative to Ground ...........-0.5V to +6.0V CC Voltage Range on Inputs Relative to Ground* .................-0.5V to Voltage Range on DAC Pins Relative to Ground*............-0.5V to *Not to ...
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ANALOG OUTPUT CHARACTERISTICS (V = 2.97V to 5.5V -40°C to +95°C PARAMETER DESCRIPTION I and I DAC0 DAC1 I and tate ent ...
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SFP Laser Controller and Diagnostic IC DIGITAL THERMOMETER CHARACTERISTICS (V = 2.97V to 5.5V -40°C to +95°C PARAMETER SYMBOL Thermometer Error T Update Rate t frame AC ELECTRICAL CHARACTERISTICS (V = 2.97V to 5.5V ...
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AC ELECTRICAL CHARACTERISTICS (continued 2.97V to 5.5V -40°C to +95°C PARAMETER SYMBOL TIMING FOR SOFT CONTROL AND STATUS FUNCTIONS TX-D Assert Time TX-D Deassert time Time to Initialize, Including Reset of TX-F TX-F Assert ...
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SFP Laser Controller and Diagnostic IC NONVOLATILE MEMORY CHARACTERISTICS (V = 2.97V to 5.5V -40°C to +95°C PARAMETER SYMBOL EEPROM Writes Note 1: All voltages are referenced to ground. Currents into the IC are positive, and ...
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V > 2.97V CC TX-F TX-D DAC0, DAC1 Figure 1. Power-On Initialization with TX-D Low V > 2.97V CC TX-F TX-D DAC0, DAC1 Figure 2. Power-On Initialization with TX-D Asserted V > 2.97V CC TX-F TX-D DAC0, DAC1 Figure 3. ...
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SFP Laser Controller and Diagnostic IC TX-F TX-D DAC0, DAC1 Figure 4. TX-D Timing During Normal Operation OCCURRENCE OF FAULT TX-F TX-D DAC0, DAC1 Figure 5. Detection of Transmitter Safety Fault Operation OCCURRENCE OF FAULT TX-F TX-D DAC0, DAC1 NOTE: ...
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OCCURRENCE OF FAULT TX-F TX-D DAC0, DAC1 NOTE: TX-F IS ALSO DEPENDENT ON INTX-F. Figure 7. Unsuccessful Recovery from a Transient Safety Fault Condition OCCURRENCE OF LOS LOS Figure 8. Timing of LOS Detection TX-D DAC0, DAC1 Figure 9. Output ...
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SFP Laser Controller and Diagnostic +3.3V 25°C, unless otherwise noted SUPPLY CURRENT vs. VOLTAGE 2.5 SDA = SCL = V CC 2.4 2.3 2.2 2.1 2.0 3.0 3.5 4.0 4.5 5.0 5.5 VOLTAGE ...
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T = 25°C, unless otherwise noted DAC 0 DNL (LSB) 1.0 0.8 1.5mA MODE 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 100 125 150 175 200 225 250 SETTING ...
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SFP Laser Controller and Diagnostic +3.3V 25°C, unless otherwise noted DAC 1 CURRENT vs. SUPPLY VOLTAGE 2.0 DAC 1, 1.5mA 1.6 1.2 PROGRAMMED DAC SETTING (FFh) 0.8 0.4 0 3.0 3.5 4.0 4.5 ...
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PIN PIN NAME 1 RSELOUT Open-Drain Rate-Select Output 2 2 SDA I C Serial Data Input/Output 2 3 SCL I C Serial Clock Input 4 INTX-F TX-F Input from External Device 5 INLOS Loss of Signal Input from External Device ...
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SFP Laser Controller and Diagnostic IC ADDRESS SDA DATA BUS INTERFACE SCL R/W AD (AUXILIARY DEVICE DEVICE ENABLE A0h) ADDRESS MD (MAIN DEVICE ENABLE) ADFIX PASSWORD PROTECTION MD TABLE 01h (DS1852) MODE SELECT TABLE 00h (DS1859) TABLE ...
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TXDS TX-D TXDC HTXP flag HTXP ENABLE HBAL flag HBAL ENABLE LTXP flag LTXP ENABLE FAULT RESET TIMER (130ms) OUT IN OUT Figure 12. Block Diagram, Shutdown INV1 IN1C IN1 IN1S SELC RSEL SELS LOSC INVL ...
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SFP Laser Controller and Diagnostic IC Detailed Description The DS1864 manages all system monitoring functions in a fiber-optic data transceiver module in accordance with SFF-8472 MSA. The IC communicates with a host 2 system through bus, and ...
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Table 1. LUT Addresses For Corresponding Temperature Values CORRESPONDING ADDRESS (hex) TEMPERATURE (° ⎯ current temperature. The DAC value referenced in the LUT is then loaded into address 82h of Table 04h (Table 01h in ...
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SFP Laser Controller and Diagnostic IC Internal calibration applies to measured values acquired by the ADC, and does not apply to the fast alarms. If inter- nal calibration is desired, each analog channel requires that registers 8Eh through AFh in ...
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Table 4. Voltage Monitor Factory Default Calibration +FS +FS SIGNAL (V) (hex) V 6.5528V FFF8 CC MON1 2.4997V FFF8 MON2 2.4997V FFF8 MON3 2.4997V FFF8 To calculate the voltage measured from the register value, first calculate the LSB weight of ...
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SFP Laser Controller and Diagnostic IC The gain register is now set and the resolution of the conversion will match the expected LSB. Customers requiring nonzero null values (e.g., 0.5V as the example shows) must next calibrate the input’s offset. ...
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Table 6. MON3 Hysteresis Threshold Values # OF RIGHT FINE MODE MAX SHIFTS (HEX) 0 FFF8 1 7FFC 2 3FFE 3 1FFF 4 0FFF 5 07FF 6 03FF 7 01FF *This is the minimum reported course mode conversion. Table 7. ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 configuration) is the location of the LTXP programmable threshold. Register DDh of Table 04h (Table 01h in DS1859 configuration) is the location of the LOS programmable threshold. Alarms ...
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TX-F is set active. A falling edge of transmit disable (the logic OR of TX-D/TXDC) will initiate a safety fault recovery. At this point, the FETG output and the DACs are enabled. The TX-F output will not be disabled ...
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SFP Laser Controller and Diagnostic ADDRESS A0h I C ADDRESS A2h (DEFAULT) 00h 00h LOWER MEMORY PASSWORD ENTRY (PWE) (4 BYTES) TABLE SELECT BYTE GBIC EEPROM (256 BYTES) 80h TABLE 01h EEPROM (120 BYTES) F8h ...
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I C ADDRESS A0h I C ADDRESS A2h (DEFAULT) 00h 00h LOWER MEMORY PASSWORD ENTRY (PWE) (4 BYTES) TABLE SELECT BYTE GBIC EEPROM (256 BYTES) 80h TABLE 00h EEPROM (120 BYTES) F8h EEPROM (8 BYTES) FFh Figure 17. ...
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SFP Laser Controller and Diagnostic IC Table 8. Password-Enable Chart ENABLE BIT ENABLE BIT PW2 (C1h, C2h) TABLE 04h PW1 (D1h, D2h), (TABLE 01h IN TABLE 05h DS1859 CONFIGURATION Table 9. Memory Block Assignments ...
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A0h Auxiliary Device Memory Register Descriptions Auxiliary Registers 00h To FFh: GBIC Memory FACTORY DEFAULT: 00h MEMORY TYPE: EEPROM These registers are used to store GBIC data as called out by the SFF-8472 specification. This block of EEPROM is accessed ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 06h to 07h: Low Temperature Warning Limit FACTORY DEFAULT: 0000h MEMORY TYPE: Shadowed Memory (SEE) 6 06h 07h 2 2 bit7 Temperature measurements below this threshold will ...
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Lower Memory Register 0Eh to 0Fh: Low V FACTORY DEFAULT: 0000h MEMORY TYPE: Shadowed Memory (SEE 0Eh 0Fh 2 2 bit7 V ol tag e m easur em ents of the ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 16h to 17h: Low MON1 Warning Limit FACTORY DEFAULT: 0000h MEMORY TYPE: Shadowed Memory (SEE 16h 17h 2 2 bit7 V ol tag e m ...
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Lower Memory Register 1Eh to 1Fh: Low MON2 Warning Limit FACTORY DEFAULT: 0000h MEMORY TYPE: Shadowed Memory (SEE 1Eh 1Fh 2 2 bit7 V ol tag e m easur em ents of the M ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 26h to 27h: Low MON3 Warning Limit FACTORY DEFAULT: 0000h MEMORY TYPE: Shadowed Memory (SEE 26h 27h 2 2 bit7 V ol tag e m ...
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Lower Memory Register 64h to 65h: Measured MON1 FACTORY DEFAULT: N/A MEMORY TYPE: Volatile (SRAM 64h 65h 2 2 bit7 Unsigned voltage measurement of MON1 signal. Lower Memory Register 66h to 67h: Measured MON2 ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 6Eh: Logic States POWER-ON VALUE: x0xx0xxx b MEMORY TYPE: Volatile (SRAM) WRITE N/A ALL ACCESS 6Eh TXDS TXDC bit7 TXDS: TX-Disable Status bit. Indicates the state of the TX-D pin. bit7 ...
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Lower Memory Register 70h: Alarm Flags POWER-ON VALUE: Determined after each channel’s first analog-to-digital conversion. MEMORY TYPE: Volatile (SRAM) 70h TMPhi TMPlo bit7 TMPalmhi: High Alarm Status for Temperature measurement. bit7 0 = Temperature measurement is below set limit. 1 ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 71h: Alarm Flags POWER-ON VALUE: Determined after each channel’s first analog-to-digital conversion. MEMORY TYPE: Volatile (SRAM) 71h MON3hi MON3lo bit7 MON3almhi: High Alarm Status for MON3 measurement. bit7 0 = MON3 ...
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Lower Memory Register 73h: Fast-Trip Flags POWER-ON VALUE: 00h MEMORY TYPE: Volatile (SRAM) 73h 0 0 bit7 These are the results from the fast-trip comparators. If these flags are latched, they can be cleared by writing the flags to 0. ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 74h: Warning Flags POWER-ON VALUE: Determined after each channel’s first analog-to-digital conversion. MEMORY TYPE: Volatile (SRAM) 74h TMPhi TMPlo bit7 TMPwrnhi: High Warning Status for Temperature measurement. bit7 0 = Temperature ...
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Lower Memory Register 75h: Warning Flags POWER-ON VALUE: Determined after each channel’s first analog-to-digital conversion. MEMORY TYPE: Volatile (SRAM) 75h MON3hi MON3lo bit7 MONwrn3hi: High Warning Status for MON3 measurement. bit7 0 = MON3 measurement is below set limit. 1 ...
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SFP Laser Controller and Diagnostic IC Lower Memory Register 77h: Conversion Updates POWER-ON VALUE: 00h MEMORY TYPE: Volatile (SRAM) 77h TAU bit7 Each of the status bits becomes a 1 after an update has occurred for the ...
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Lower Memory Register 7Bh to 7Eh: Password Entry Bytes POWER-ON VALUE: 0000 0000h MEMORY TYPE: Volatile (SRAM 7Bh 7Ch 7Dh 7Eh 2 2 bit7 The password ...
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SFP Laser Controller and Diagnostic IC Table 01h (Table 00h in DS1859 Configuration), F8h: Alarm Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) F8h TMPhi TMPlo bit7 Bytes F8h and F9h configure a maskable interrupt, determining which alarm flags ...
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Table 01h (Table 00h in DS1859 Configuration), F9h: Alarm Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) F9h MON3hi MON3lo bit7 These bytes configure a maskable interrupt, determining which alarm flags assert the MINT bit (Lower Memory, byte 71h, ...
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SFP Laser Controller and Diagnostic IC Table 01h (Table 00h in DS1859 Configuration), FAh: Warning Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) FAh TMPhi TMPlo bit7 These bytes configure a maskable interrupt, determining which warning flags assert the ...
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Table 01h (Table 00h in DS1859 Configuration), FBh: Warning Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) FBh MON3hi MON3lo bit7 These bytes configure a maskable interrupt, determining which warning flags assert the MINT bit (Lower Memory, byte 71h, ...
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SFP Laser Controller and Diagnostic IC Table 03h Register Descriptions Table 03h, 80h to C7h: Temperature Lookup Table For DAC1 FACTORY DEFAULT: 00h MEMORY TYPE: Nonvolatile (EEPROM) 80h to C7h bit7 This is the lookup table (LUT) for the DAC1 ...
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Table 04h (Table 01h in DS1859 Configuration), 82h: DAC0 Value DAC0 value is high-impedance (Hi-Z) until programmed value is recalled from FACTORY DEFAULT: MEMORY TYPE: Volatile (SRAM 82h 2 2 bit7 DAC values from 00h to FFh for ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), 88h: Configuration And Status FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) 88h IN1C X bit7 IN1C: Software control bit for IN1 value. bit7 ...
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Table 04h (Table 01h in DS1859 Configuration), 89h: Logic Configuration FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) 89h X LOSC bit7 Logic control bits for alarm and warning flags, as well as internal and external signals. bit7 This bit ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), 8Bh: Reserved Memory 8Bh Table 04h (Table 01h in DS1859 Configuration), 8Ch: Main Device Address FACTORY DEFAULT: A2h MEMORY TYPE: Shadowed Memory (SEE 8Ch 2 ...
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Table 04h (Table 01h in DS1859 Configuration), 8Fh: Right-Shift Control FACTORY DEFAULT: 30h MEMORY TYPE: Shadowed Memory (SEE) 8Fh RESERVED MON3 bit7 Control right shifts for the monitor channels. bit7 Reserved 2 MON3 -MON3 bit6:4 scaling the measurements to the ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), 98h to 99h: Gain Calibration For MON3 (Fine) FACTORY DEFAULT: ####h MEMORY TYPE: Shadowed Memory (SEE 98h 99h 2 2 bit7 ...
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Table 04h (Table 01h in DS1859 Configuration), A8h to A9h: Offset Calibration For MON3 (Fine) FACTORY DEFAULT: ####h MEMORY TYPE: Shadowed Memory (SEE) A8h A9h 2 2 bit7 Controls offset of the MON3 Fine measurements. Table ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), B0h to B7h: Thresholds For High-Bias Alarm Flags (HBAL) FACTORY DEFAULT: FFh MEMORY TYPE: Shadowed Memory (SEE B0h B1h 2 2 ...
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Table 04h (Table 01h in DS1859 Configuration), B8h to BFh: Thresholds For High-Bias Warning Flags (HBWA) FACTORY DEFAULT: FFh MEMORY TYPE: Shadowed Memory (SEE B8h B9h BAh ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), C1h: PW2 Password Write-Enable Byte FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE C1h 2 2 bit7 This byte configures the Write protection of PW2. ...
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Table 04h (Table 01h in DS1859 Configuration), C2h: PW2 Password Read-Enable Byte FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE C2h 2 2 bit7 This byte configures the Read protection of PW2. This is discussed in more detail ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), C3h to C6h: PW2 Password Setting FACTORY DEFAULT: 0000 0000h MEMORY TYPE: Shadowed Memory (SEE C3h C4h ...
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Table 04h (Table 01h in DS1859 Configuration), DAh: Control And Shutdown Configuration And Status FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) DAh enab BAL enab l e LTX P enab ...
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SFP Laser Controller and Diagnostic IC Table 04h (Table 01h in DS1859 Configuration), DDh: LOS Threshold (LOS) FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE DDh 2 2 bit7 This byte sets a low D/A threshold for comparing ...
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Table 05h, D1h: PW1 Password Write-Enable Byte FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE D1h 2 2 bit7 This byte configures the Write protection of PW1. This is discussed in more detail in the Memory Protection and ...
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SFP Laser Controller and Diagnostic IC Table 05h, D2h: PW1 Password Read-Enable Byte FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE D2h 2 2 bit7 This byte configures the Read protection of PW1. This is discussed in more ...
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Table 05h, D3h to D6h: PW1 Password Setting FACTORY DEFAULT: 0000 0000h MEMORY TYPE: Shadowed Memory (SEE D3h D4h D5h D6h 2 2 bit7 These four ...
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SFP Laser Controller and Diagnostic IC Table 05h, F8h: Alarm Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) F8h TMPhi TMPlo bit7 These bytes configure a maskable interrupt, determining which alarm flags assert the MINT bit (Lower Memory, byte ...
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Table 05h, F9h: Alarm Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) F9h MON3hi MON3lo bit7 These bytes configure a maskable interrupt, determining which alarm flags assert the MINT bit (Lower Memory, byte 71h, bit 0). If one of ...
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SFP Laser Controller and Diagnostic IC Table 05h, FAh: Warning Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) FAh TMPhi TMPlo bit7 These bytes configure a maskable interrupt, determining which warning flags assert the MINT bit (Lower Memory, byte ...
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Table 05h, FBh: Warning Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) FBh MON3hi MON3lo bit7 These bytes configure a maskable interrupt, determining which warning flags assert the MINT bit (Lower Memory, byte 71h, bit 0). If one of ...
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SFP Laser Controller and Diagnostic Definitions The following terminology is commonly used to describe data transfers. Master Device: The master device controls the slave devices on the bus. The master device generates SCL ...
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I C Communication Writing a Single Byte to a Slave: The master must generate a start condition, write the slave address byte (R/W = 0), write the memory address, write the byte of data, and generate a stop condition. ...
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SFP Laser Controller and Diagnostic IC SDA MSB SLAVE ADDRESS SCL 1 2 START CONDITION 2 Figure 18 Data Transfer Protocol SDA t BUF t LOW SCL t HD:STA STOP START 2 Figure 19 Characteristics ...
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COMMUNICATIONS KEY WHITE BOXES INDICATE THE MASTER IS S START A ACK CONTROLLING SDA NOT SHADED BOXES INDICATE THE SLAVE IS P STOP N ACK CONTROLLING SDA REPEATED START WRITE A ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. 72 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 72 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 72 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...