PD69012 - 12 Ports Power Over Ethernet Manager Supported Features __________ Description _________________ Microsemi’s PD69012 Power over Ethernet (PoE) Manager chip integrates power, analog and state of the art embedded core logic into a single 80-pin, plastic QFP package. The device is used in Ethernet switches and Midspans to enable network devices to share power and data over the same cable. PD69012 device is a 12-port, mixed-signal, highvoltage Power over Ethernet driver. It enables detection of IEEE802.3af-2003 compliant PDs (Powered Devices) and IEEE802.3AT High Power Devices, thus, ensuring safe power feeding and disconnection of ports. With full digital control via a serial communication interface and a minimum of external components, the device integrates into multiport and highly populated Ethernet switches and routers. The PD69012 executes all real time functions as specified in the IEEE802.3af-2003 (“AF”) standard and IEEE802.3at High Power (“AT”) functionality, including load detection, “AF” and “AT” classification and port status monitoring. In addition it performs system level activities such as: power management and MIB support for system management. The PoE device is designed to detect and disable disconnected ports utilizing both DC and AC disconnection methods, as specified in the IEEE 802.3af-2003 standard. The PD69012 is designed to support 2 main configurations: • Auto mode: For Basic ”AF” and “AT” PSE equipment • Enhanced mode: For High End, Extended features set of AF and AT PSE equipment Vport_pos0 1 Vport_pos1 2 61 62 Port_neg0 63 64 65 66 67 69 68 71 LSD 70 LSC CS_EEPROM_n/ LSL / Interrupt_n 60 LSC/ GPIO3 Ext_reg 59 LSD/ GPIO2 3 ADC2p5 58 CS_EEPROM_n/ LSL / Interrupt_n 4 QGND 57 Vperi 5 I2CINI 56 Ext_reg 6 Vcc2p5 55 ADC2p5 Vport_pos6 7 ASIC_INI 54 Qgnd Vport_pos7 8 Iref 53 I2CINI Vport_pos8 9 Reset_n 52 Vcc2p5 Vport_pos9 10 SDA 51 ASIC_INI SDA_out PD69012 50 Iref SCL 49 Reset_n SCK 48 SDA Vport_pos2 Vport_pos3 Vport_pos4 Vport_pos5 Vport_pos10 11 Vport_pos11 12 CP_OUT 13 CP_IN 14 47 SDA_out / Test_mode 15 46 SCL Ref_port_neg 16 Dgnd2 17 Date Code Disable_ports_n 18 45 SCK 44 MOSI 43 MISO 42 CS_n 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Port_neg7 Port_neg8 port_sense8 gate_8 gate_9 port_sense9 Port_neg9 Port_neg10 port_sense10 gate_10 gate_11 port_sense11 Port_neg11 Dgnd1 24 gate_7 gate_6 Agnd1 Copyright © 2009 Rev. 1.0, 2009-03-03 port_sense7 41 23 20 22 19 PowerGood2/GPIO4 21 PowerGood1/GPIO1 Port_neg6 PowerGood0/GPIO0 port_sense6 Vmain ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Fully IEEE802.3af-2003 compliant Designed to support IEEE802.3at including two-event classification Supports Pre-standard PD detection Supports Cisco devices detection IETF Power Ethernet MIB (RFC 3621) compliant Single DC voltage input (44v-57v) Wide temperature range: -40° C to +85° C Low thermal dissipation (0.5Ω sense resistor) Drives 12 independent 2-pairs power ports or 6 independent 4-pairs ports Can cascade up to 8 PoE devices (96 ports) EEPROM interface for software patching and parameter configuration I2C Host interface Supports Interrupt out pin Dynamic Power management Emergency power management supporting 3 Configurable Power Bank I/Os Direct register communication Direct LED drive Continuous monitoring per port and system data Parameter setting per port and per system Power soft start algorithm Thermal monitoring/protection Voltage monitoring/protection H/W disable ports input Built in 3.3 V regulator Internal power on reset Enhanced SPI bus for internal communication External EEPROM for system parameters update SW ROM patch option RoHS compliant Enhanced Modes Additional Features: ♦ ♦ Sense_Neg port_sense0 72 Agnd2 gate_3 73 gate_1 port_sense3 74 gate_0 Port_neg3 75 Port_neg2 Port_neg4 76 port_sense1 port_sense4 77 Port_neg1 gate_4 78 port_sense2 gate_5 79 gate_2 Port_neg5 port_sense5 80 Pin Configuration _____________ PD69012 Auto Mode Features: ♦ ♦ ♦ ♦ ♦ I2C or UART host interface Serial Communication Protocol backwards compatible with PD63000 and PDIC66000 Additional monitoring Extended parameter setting Port matrix for flexible PCB layout Field upgradeable software Emergency Power Management with 4 power supplies Ordering Information __________ Part number Temperature range PART PD69012 TEMP. RANGE -40 to +85 °C Disable_ports_n Package PIN PACKAGE LQFP 80 pin This datasheet refers to ICs with date code "XAA0843" or later. Date code: See the bottom line (XAA0843) in the Pin Configuration drawing. Where “0843" is the date code, “08” is the year (2008), and “43” is the week. Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 page 1 PD69012 - 12 Ports Power Over Ethernet Manager Package Information____________________________________________ The PD69012 is packed in an 80-pin LQFP plastic package, 12 x 12 x 1.4 mm with exposed pad. Copyright © 2009 Rev. 1.0, 2009-03-03 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 2 PD69012 - 12 Ports Power Over Ethernet Manager Figure 1: PD69012 Package Description Copyright © 2009 Rev. 1.0, 2009-03-03 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 3 PD69012 - 12 Ports Power Over Ethernet Manager Maximum Ratings ____________ Vmain………………………………………………… -0.3 to 80 V(1) DGND, AGND, QGND, SENSE_NEG…………..-0.3 to 0.3 V(2) ESD (Human Body Model)…………….….… -2 to 2 kV(3) Max junction temperature (Tjunc)…………..…+150° C Junction-ambient thermal resistance (θJA)….. 30° C/W(4) Junction-case thermal resistance (θJC)………10° C/W Lead temperature (soldering, 10 s)…………. 260° C Storage temperature…………………………..-40 to +125 °C VPORT_POSx ………………………………..…… -0.3 to 80 V(1) VPORT_NEGx, REF_PORT_NEG……..………..… -8.4 to 80V(1) VPORT_POSx - VPORT_NEGx……………..…..…… -0.3 to 80 V(1) PORT_SENSEx …..……..……..……..………..…-7.2 to 25 V (1) Gate_x………………………………..……… -0.3 to 18 V VCC2p5, ADC2p5………….………………………... -0.3 to 3 V VPERI……………………………..…………………. 4 V EXT_REG……………………………………..…… -0.3 to 6 V I2CINI, ASICINI…………………………………… -0.3 to 3 V MISO, MOSI, SCK, SCL, SDA, CLK, RESETN, CS_N, INTERRUPT, POWER_BANK[2..0], LSD, LSC, LSL, SDA_OUT….…………………………………... -0.3 to (VPERI + 0.3) V Notes: “x” defines port numbers, 0 thru 3, inclusive. (1) 80 V is the transient voltage that can be applied for 1 min max. (2) Maximum value between grounds. (3) ESD testing is performed in accordance with the Human Body Model (CZap = 100 pF, RZap = 1500 Ω). (4) with 4ML PCB – no air flow . Stress beyond those listed above may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Operating Conditions ____________________________________________ PARAMETER Operating temperature At full load ambient Operational limitations (1) (1) MIN. NOM. -40 15 to 44 44 to 55 MAX. UNIT +85 °C 55 to 57 V Operating functions depend on the input voltage, as shown in Figure 2. AC Disconnect (only up to 55v) POE IEEE 802.3at compliance (from 50v to 57v) POE IEEE802.3af compliance (from 44v to 57v) Communication (operates over entire range) 15 44 50 55 57 V Figure 2: Operational Ranges Copyright © 2009 Rev. 1.0, 2009-03-03 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 4 PD69012 - 12 Ports Power Over Ethernet Manager Electrical Characteristics _________________________________________ PIN NAME: PAD TYPE: PARAMETER • • SCL DISABLE_PORTS_N Schmitt Trigger CMOS input, TTL Level with no internal Res. SYMBOL MIN High Level Input Voltage VIH 2.0 Low Level Input Voltage VIL TYP MAX 0.3 V V Input High Current IIH -1 1 μA Input Low Current IIL -1 1 μA PIN NAME: PAD TYPE: PARAMETER • • • • • CMOS Input LSD Multiplexed with GPIO_2 LSC Multiplexed with GPIO_3 POWER_GOOD0 Multiplexed with GPIO_0 POWER_GOOD1 Multiplexed with GPIO_1 POWER_GOOD2 Multiplexed with GPIO_4 I/O, TTL Level with no internal pull up / pull down resistor, with Schmitt trigger SYMBOL MIN High Level Input Voltage VIH 2.0 Low Level Input Voltage VIL Input Voltage Hysteresis TYP MAX UNIT NOTE V 0.8 0.3 V V Input High Current IIH -1 +1 μA Input Low Current IIL -1 +1 μA High Level Output Voltage NOTE V 0.8 Input Voltage Hysteresis UNIT VPERI- V Iout = -2 mA V Iout = 2 mA 0.4 V Low Level Output Voltage Copyright © 2009 Rev. 1.0, 2009-03-03 0.4 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 5 PD69012 - 12 Ports Power Over Ethernet Manager PIN NAME: PAD TYPE: PARAMETER • SCK • CS_N • MOSI CMOS I/O, TTL Level with internal pull up current source, with Schmitt trigger Input SYMBOL MIN High Level Input Voltage VIH 2.0 Low Level Input Voltage VIL TYP MAX 0.3 V V Input High Current IIH -1 +1 μA Input Low Current IIL -1 +1 μA High Level Output Voltage NOTE V 0.8 Input Voltage Hysteresis UNIT VPERI- V Iout = -2 mA 0.4 V Iout = 2 mA 50 uA 0.4 V Low Level Output Voltage Pull Up Current PIN NAME: PAD TYPE: PARAMETER 10 • 20 MISO CMOS I/O, TTL Level with internal pull up current source, with Schmitt trigger Input SYMBOL MIN High Level Input Voltage VIH 2.0 Low Level Input Voltage VIL Input Voltage Hysteresis TYP MAX UNIT V 0.8 0.3 V V Input High Current IIH -1 +1 μA Input Low Current IIL -1 +1 μA High Level Output Voltage NOTE VPERI- V Iout = -2 mA 0.4 V Iout = 2 mA 50 uA 0.4 V Low Level Output Voltage Pull Down Current Copyright © 2009 Rev. 1.0, 2009-03-03 10 20 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 6 PD69012 - 12 Ports Power Over Ethernet Manager PIN NAME: PAD TYPE: PARAMETER • RESET_N • SDA • SDA_OUT Multiplexed with TEST_MODE Digital I/O – input/output open drain CMOS Open Drain Output with Schmitt Trigger Input, TTL Level (external pull up resistor Only)) SYMBOL MIN TYP MAX UNIT NOTE High Level Input Voltage VIH 2.0 Low Level Output Voltage VOL 0.4 V Low Level Input Voltage VIL 0.8 V Input Voltage Hysteresis 0.3 OFF State Output Current -1 PIN NAME: PAD TYPE: PARAMETER • V V +1 CMOS Open Drain Output (external pull up res. Only)) SYMBOL OFF State Output Current PAD TYPE: PARAMETER uA CS_EEPROM & LSL Multiplexed with INTERRUPT_N MIN TYP Low Level Output Voltage PIN NAME: Iout = 6 mA -1 MAX UNIT 0.4 V +1 uA MAX UNIT +10 uA NOTE Iout = 6mA • VPORT_NEGx • REF_PORT_NEG High Voltage Analog Pad SYMBOL Pin Current Consumption MIN TYP -10 NOTE Port driver OFF, Vport differential measurement OFF, AC generator OFF PIN NAME: PAD TYPE: PARAMETER Operating Voltage • PORT_SENSEx Low Voltage Analog Pad SYMBOL MIN TYP 0 MAX UNIT 0.5 V NOTE With external 0.5 ohm 2% to GND Internal Current Consumption Copyright © 2009 Rev. 1.0, 2009-03-03 20 uA Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 7 PD69012 - 12 Ports Power Over Ethernet Manager PIN NAME: PAD TYPE: PARAMETER • VPORT_POSx • VPORT_NEGx High Voltage Analog Pad SYMBOL Operating Voltage (to GND) PIN NAME: PAD TYPE: PARAMETER MIN • PARAMETER UNIT 62 V MAX UNIT 57 V 13.6 16 mA TYP MAX UNIT 68 V 5 mA MAX UNIT 57 V High Voltage Supply Pad SYMBOL MIN TYP 44 • PARAMETER Operating Voltage Copyright © 2009 Rev. 1.0, 2009-03-03 Total on VMAIN Analog SYMBOL MIN 44 Pin Internal Current Consumption PAD TYPE: NOTE CP_OUT Operating Voltage PIN NAME: NOTE VMAIN VMAIN Current Consumption PAD TYPE: MAX 0 Operating Voltage PIN NAME: TYP • NOTE CP_IN Analog SYMBOL MIN TYP 34 NOTE Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 8 PD69012 - 12 Ports Power Over Ethernet Manager PIN NAME: PAD TYPE: PARAMETER • • • • Analog ADC2p5 VCC2p5 VPERI EXT_REG SYMBOL MIN ADC2p5 Output voltage TYP 2.45 ADC2p5 Internal Current MAX UNIT 2.55 V 6 mA Consumption NOTE Recommended external cap. = 47 nF to 135 nF VCC2p5 Output Voltage 2.37 2.62 V Recommended external cap. = 47 nF to 135 nF VPERI Output Voltage 3.10 3.5 V Recommended external cap. = 1 uF to 4.7 uF VPERI External Current Load 6 mA EXT_REG Output Current 6 mA PIN NAME: PAD TYPE: PARAMETER • ASICINI • I2CINI (max. capacitance between mode input to GND should NOT exceed 1nF) Analog SYMBOL MIN TYP MAX UNIT Operating Voltage 0 ADC2p5 V Current Consumption -1 +1 uA MAX UNIT 1.34 V PIN NAME: PAD TYPE: PARAMETER • PAD TYPE: PARAMETER Output Voltage Copyright © 2009 Rev. 1.0, 2009-03-03 NOTE IREF Analog SYMBOL Output Voltage PIN NAME: Without external NPN MIN TYP 1.21 • NOTE With external 24.9 K resistor to GND FET_Gx Analog SYMBOL MIN TYP 12 MAX UNIT 15 V NOTE Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 9 PD69012 - 12 Ports Power Over Ethernet Manager Dynamic Characteristics The PD69012 utilizes three programmable current level thresholds (Imin, Icut, Ilim) and three timers (Tmin, Tcut, Tlim). Loads that dissipate more than Icut for longer than Tcut are classified as ‘overloads’ and are automatically shutdown. Loads that consume Ilim current for more than Tlim are shutdown and classified as 'short circuits'. If the PD69012 is configured to operate in DC-Disconnect mode and the output power is below Imin for more than Tmin, the PD is classified as ‘no-load’ and is shutdown. If the PD69012 is configured to operate in AC-Disconnect mode, then if the load's impedance is above a pre-defined impedance for more than Tmin, the PD is classified as ‘no-load’ and is shutdown. Automatic recovery from overload and no-load conditions is attempted every period of TOVLREC and TUDLREC (typically 5 and 1 seconds respectively). Output power is limited to Ilim, which is a maximum peak current allowed at the port. AF PORTS PARAMETERS PARAMETER Automatic recovery from overload shutdown Automatic recovery from no-load shutdown Cutoff timers accuracy Inrush current Output current operating range Output power available, operating range Off mode current PD power maintenance request drop-out time limit Over load current detection range Over load time limit Turn on rise time Turn off time Time Maintain Power Signature AC disconnect impedance Copyright © 2009 Rev. 1.0, 2009-03-03 CONDITIONS TOVLREC value, measured from port shutdown (can be modified through control port) TUDLREC value, measured from port shutdown (can be modified through control port) Typical accuracy of Tcut IInrsh Iport Pport Imin1 Imin2 TPMDO Icut TOVL Trise Toff TMPS Zac For t=50 ms, Cload=180 uF max. Continuous operation after startup period. Continuous operation after startup period, at port output. Must disconnect for t greater than TUVL May or may not disconnect for t greater than TUVL Buffer period to handle transitions Time limited to TOVL From 10% to 90% of Vport (Specified for PD load consisting of 100 uF capacitor in parallel to 200 Ω). From Vport to 2.8 Vdc DC modulation time for dc disconnect MIN. 4 TYP. MAX. UNIT 5 s 1 s 2 400 10 0.57 0 ms 450 375 mA mA 15.4 W 5 mA 10 mA 300 400 ms 350 50 400 75 mA ms 0 5 7.5 15 us 500 27 49 600 2000 ms ms KΩ Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 10 PD69012 - 12 Ports Power Over Ethernet Manager AT PORTS PARAMETERS PARAMETER Automatic recovery from overload shutdown Automatic recovery from no-load shutdown Cutoff timers accuracy Inrush current Output current operating range Output power available, operating range Off mode current PD power maintenance request drop-out time limit Over load current detection range Over load time limit Turn on rise time CONDITIONS TOVLREC value, measured from port shutdown (can be modified through control port) TUDLREC value, measured from port shutdown (can be modified through control port) Typical accuracy of Tcut IInrsh Iport Pport Imin1 Imin2 TPMDO Icut TOVL Trise For t=50 ms, Cload=180 uF max. Continuous operation after startup period. Continuous operation after startup period, at port output. Must disconnect for t greater than TUVL May or may not disconnect for t greater than TUVL Buffer period to handle transitions Time limited to TOVL From 10% to 90% of Vport (Specified for PD load consisting of 100 uF capacitor in parallel to 200 Ω). Turn off time Time Maintain Power Signature AC disconnect impedance Copyright © 2009 Rev. 1.0, 2009-03-03 Toff TMPS Zac MIN. 4 TYP. s 1 s 2 0.57 0 ms 450 643 mA mA 36 0 7.5 300 686 50 728 mA 10 mA 400 ms 771 75 mA ms us 500 27 W 5 15 From Vport to 2.8 Vdc DC modulation time for dc disconnect UNIT 5 400 10 5 MAX. 49 600 2000 ms ms KΩ Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 11 PD69012 - 12 Ports Power Over Ethernet Manager Pin Description_____________________________________________ Pin Pin Name Pin Type 0 1 PAD VPORT_POS0 Gnd Analog I/O Exposed pad connected to underside of die Port 0 positive input 2 VPORT_POS1 Analog I/O Port 1 positive input 3 VPORT_POS2 Analog I/O Port 2 positive input 4 VPORT_POS3 Analog I/O Port 3 positive input 5 VPORT_POS4 Analog I/O Port 4 positive input 6 VPORT_POS5 Analog I/O Port 5 positive input 7 VPORT_POS6 Analog I/O Port 6 positive input 8 VPORT_POS7 Analog I/O Port 7 positive input 9 VPORT_POS8 Analog I/O Port 8 positive input 10 VPORT_POS9 Analog I/O Port 9 positive input 11 VPORT_POS10 Analog I/O Port 10 positive input 12 VPORT_POS11 Analog I/O Port 11 positive input 13 CP_OUT Analog I/O Charge pump output pulse 14 CP_IN Supply Charge pump input 15 VMAIN Supply Main Voltage supply 16 REF_PORT_NEG Analog I/O 17 DGND2 GND 18 POWER_GOOD0 MULTIPLEXED WITH GPIO_0 Digital I/O Power supply monitoring multiplexed with general purpose I/O 19 POWER_GOOD1 MULTIPLEXED WITH GPIO_1 Digital I/O Power supply monitoring multiplexed with general purpose I/O 20 POWER_GOOD2 MULTIPLEXED WITH GPIO_4 Digital I/O Power supply monitoring multiplexed with general purpose I/O 21 AGND1 GND 22 VPORT_NEG6 Analog I/O Port 6 negative voltage feeding 23 PORT_SENSE6 Analog I/O Channel current monitoring 24 FET_G6 Analog I/O Port 6 – Gate control 25 FET_G7 Analog I/O Port 7 – Gate control 26 PORT_SENSE7 Analog I/O Channel current monitoring 27 VPORT_NEG7 Analog I/O Port 7 negative voltage feeding 28 VPORT_NEG8 Analog I/O Port 8 negative voltage feeding Copyright © 2009 Rev. 1.0, 2009-03-03 Description Port negative reference Digital ground Analog ground Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 12 PD69012 - 12 Ports Power Over Ethernet Manager Pin Pin Name Pin Type 29 PORT_SENSE8 Analog I/O Channel current monitoring 30 FET_G8 Analog I/O Port 8 – Gate control 31 FET_G9 Analog I/O Port 9 – Gate control 32 PORT_SENSE9 Analog I/O Channel current monitoring 33 VPORT_NEG9 Analog I/O Port 9 negative voltage feeding 34 VPORT_NEG10 Analog I/O Port 10 negative voltage feeding 35 PORT_SENSE10 Analog I/O Channel current monitoring 36 FET_G10 Analog I/O Port 10 – Gate control 37 FET_G11 Analog I/O Port 11 – Gate control 38 PORT_SENSE11 Analog I/O Channel current monitoring 39 VPORT_NEG11 Analog I/O Port 11 negative voltage feeding 40 DGND1 GND 41 DISABLE_PORTS_N Digital Input 42 CS_N Digital I/O SPI bus, Chip Select 43 MISO Digital I/O SPI bus, Master Data in/slave out 44 MOSI Digital I/O SPI bus, Master Data out/slave in 45 SCK Digital I/O SPI bus, Serial clock I/O 46 SCL Digital Input 47 SDA_OUT MULTIPLEXED WITH TEST_MODE Digital I/O Third pin in I2C protocol Test Mode Pin – Must be tied to VPERI with pull-up resistor if not used 48 SDA Digital I/O I2C bus, open drain 49 RESET_N Digital I/O Active Low Reset I/O 50 IREF Analog I/O Current reference 51 ASICINI Analog Input 52 VCC2P5 53 I2CINI Analog Input 54 QGND GND 55 ADC2P5 56 EXT_REG Analog Out External regulation 57 VPERI Analog Out Regulated 3.3 v output voltage source for external devices 58 CS_EEPROM_N & LSL MULTIPLEXED WITH INTERRUPT_N Digital Output Open drain SPI bus, EEPROM Chip Select & Led Stream Latch (if set) Multiplexed with interrupt out Copyright © 2009 Rev. 1.0, 2009-03-03 Description Digital ground Disable All Ports Power – Active Low I2C bus, Serial Clock Input Analog input for chip initialization Internal Regulator Internal 2.5 v source – not to be used for external devices Analog input for I2C initialization Quiet analog ground Internal reference ADC reference – not to be used for external devices Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 13 PD69012 - 12 Ports Power Over Ethernet Manager Pin Pin Name Pin Type Description 59 LSD MULTIPLEXED WITH GPIO_2 Digital I/O LED Stream Data – data out Multiplexed with General purpose I/O 60 LSC MULTIPLEXED WITH GPIO_3 Digital I/O Led Stream CLK– CLK out Multiplexed purpose I/O 61 SENSE_NEG Analog I/O Port sense reference 62 AGND2 GND 63 VPORT_NEG0 Analog I/O Port 0 negative voltage feeding 64 PORT_SENSE0 Analog I/O Channel current monitoring 65 FET_G0 Analog I/O Port 0 – Gate control 66 FET_G1 Analog I/O Port 1 – Gate control 67 PORT_SENSE1 Analog I/O Channel current monitoring 68 VPORT_NEG1 Analog I/O Port 1 negative voltage feeding 69 VPORT_NEG2 Analog I/O Port 2 negative voltage feeding 70 PORT_SENSE2 Analog I/O Channel current monitoring 71 FET_G2 Analog I/O Port 2 – Gate control 72 FET_G3 Analog I/O Port 3 – Gate control 73 PORT_SENSE3 Analog I/O Channel current monitoring 74 VPORT_NEG3 Analog I/O Port 3 negative voltage feeding 75 VPORT_NEG4 Analog I/O Port 4 negative voltage feeding 76 PORT_SENSE4 Analog I/O Channel current monitoring 77 FET_G4 Analog I/O Port 4 – Gate control 78 FET_G5 Analog I/O Port 5 – Gate control 79 PORT_SENSE5 Analog I/O Channel current monitoring 80 VPORT_NEG5 Analog I/O Port 5 negative voltage feeding Copyright © 2009 Rev. 1.0, 2009-03-03 with General Analog ground Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 14 PD69012 - 12 Ports Power Over Ethernet Manager Configuration Pins _________________________________________ There are two main configuration pins (see Figure 3) utilized in the PD69012. These pins configure the operation mode of the chip and the communication addresses (SPI and I2C) VMain VPeri 3.3v R2 R1 ADC 2P5 Vmain Vperi Ex _Reg ASIC _IN I P D69012 10k 10k I2C_INI QG N D Figure 3: Electronic Connection of Configuration Pins Copyright © 2009 Rev. 1.0, 2009-03-03 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 15 PD69012 - 12 Ports Power Over Ethernet Manager Application Information _______________________________________ The PD69012 can be integrated into a number of applications such as daughter boards, Ethernet switches or routers. Examples of such applications are described below: Integrated directly into a switch: Facilitates entire PoE concept by including the IC(s) on the main switch’s PCB. Daughter board add-on: The IC is integrated into a small PCB dedicated for PoE, mounted on top of the switch’s main PCB or in the DIMM module Integrated into an RJ45 connector: Saves space on the main board and creates small differences between the PoE and non-PoE versions of a switch Midspans: Stand alone devices, installed between the Ethernet switch and PDs (Powered Devices) such as telephones, cameras, wireless LANs, etc. These Midspans include the PD69012 IC as a PoE control element, destined to inject power over the communication lines. Figure 4 and Figure 5 illustrate an example of basic applications of the PD69012 in an AC Disconnect Mode and the DC Disconnect Mode: Vmain : 44÷ 57 v Vport_ Pos0 Vp eri 3.3v CP_ OUT Vport_ Sense CP_IN VCC2P5 ADC2P5 R1 x12 Sense_ Neg MOSI MISO SCK CS0 EEPROM_ CS LSC LSD PG 0 Ref PG1 PG2 Port Neg 2 SDA SCL SDA_ OUT Iref Vp eri 3.3 v 22.6k 46.4k 24.9k 10K Add if line is not in use Vport_Pos 11 Vport_ Neg 11 Vport_ Sense I2 C_ INI Reset Disable_ Ports_ N Interupt_ Out I C Co mmunication Bus Vport_ Neg0 x12 R3 R4 Fuse 0.5R Vport_ Pos Vport_ Neg ASIC_ INI R2 200nF Vport_ Pos Vport_ Neg FET_ gate Vmai n Vper i Ext_ Reg 46 .4 K SPI Communication Bus LED Driving To Power Supplies Power Good Signals V main Figure 4: Basic Application with AC Disconnect Support Copyright © 2009 Rev. 1.0, 2009-03-03 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 16 PD69012 - 12 Ports Power Over Ethernet Manager Vmain : 44 ÷57 v Vport_ Pos0 Vp eri 3.3v CP_ OUT Vmai n Vperi Ext_ Reg 46 .4K Vport_ Pos Vport_Neg FET_ gate Vport_ Sense CP_ IN VCC2 P5 ADC2 P5 R1 x12 Vport_Pos 11 Vport_ Neg 11 Vport_ Sense I2C_ INI Sense_ Neg R4 Reset Disable_ Ports_N Interupt_ Out 2 SDA SCL SDA_ OUT Iref MOSI MISO SCK CS0 EEPROM_ CS LSC LSD PG 0 Ref PG1 Port Neg PG2 Vp eri 3 .3 v 22.6k 46.4k 24.9k 10K Add if line is not in use Vport_ Neg0 x12 R3 I C Co mmunication Bus Fuse 0 .5 R Vport_ Pos Vport_ Neg ASIC_ INI R2 47 nF SPI Communication Bus LED Driving To Power Supplies Power Good Signals V main Figure 5: Basic Application with DC Disconnect Support Copyright © 2009 Rev. 1.0, 2009-03-03 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 17 PD69012 - 12 Ports Power Over Ethernet Manager This document and the information contained herein may not be modified, by any person other than authorized personnel of Microsemi. No license under any patent, copyright, trade secret or other intellectual property right is granted to or conferred upon you by disclosure or delivery of the information, either expressly, by implication, inducement, estoppels or otherwise. Any license under such intellectual property rights must be approved by Microsemi in writing signed by an officer of Microsemi. Microsemi reserves the right to change the configuration, functionality and performance of its products at anytime without any notice. This product has been subject to limited testing and should not be used in conjunction with life-support or other mission-critical equipment or applications. Microsemi assumes no liability whatsoever, and Microsemi disclaims any express or implied warranty, relating to sale and/or use of Microsemi products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. The product is subject to other terms and conditions which can be located on the web at http://www.microsemi.com/legal/tnc.asp" Revision History Revision Level / Date Para. Affected Description 0.1 / 03 March 2009 - Initial preliminary release 1.0 / 25-Aug-09 Release © 2009 Microsemi Corp. All rights reserved. For support contact: [email protected] Visit our web site at: www.microsemi.com Copyright © 2009 Rev. 1.0, 2009-03-03 Cat. No. 06-0078-058 Microsemi Analog Mixed Signal Group 2381 Morse Avenue, Irvine, CA 92614, USA; Phone (USA): (800) 713-4113, (ROW): (949) 221-7100 Fax: (949) 756-0308 Page 18