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PD69008 - 8 Ports Power Over Ethernet Manager
Description _________________
Microsemi's PD69008 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. PD69008 device is an 8-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 PD69008 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 PD69008 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
Supported Features __________
PD69008 Auto Mode features: Fully IEEE802.3af-2003 compliant Designed to support IEEE802.3at including twoevent 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 (0.5 sense resistor) Drives 8 independent two-pairs power ports or 64-pairs ports Can cascade up to 8 PoE devices (64 ports) EEPROM interface for software patching and parameter configuration I2C Host interface Supports Interrupt out pin Dynamic power management Emergency power management supporting three configurable Power Bank I/Os Direct register communication Direct LED drive supporting one or two colors 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
Pin Configuration _____________
port_sense5 port_sense4 port_sense3 port_sense2 port_sense1 port_sense0 Sense_Neg Port_neg5 Port_neg2 Port_neg4 Port_neg3 Port_neg1 Port_neg0 gate_3 AGND2 gate_5 gate_4 gate_2 gate_1
Enhanced Modes Additional Features:
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
LSC/ GPIO3 LSD/ GPIO2 CS_EEPROM_n/ LSL / Interrupt_n Vperi Ext_reg ADC2p5 QGND I2CINI Vcc2p5 ASIC_INI Iref Reset_n SDA SDA_out / Test_mode SCL SCK MOSI MISO CS_n Disable_ports_n
Vport_pos0 Vport_pos1 Vport_pos2 Vport_pos3 Vport_pos4 Vport_pos5 Vport_pos6 Vport_pos7 NC NC NC NC CP_OUT CP_IN Vmain Ref_port_neg DGND2 Good0/GPIO0 Good1/GPIO1 rGood2/GPIO4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

PD69008
Date Code
I2C or UART Host interface Serial communication protocol backwards compatible with PD63000 and PDIC66000 Added monitoring Extended parameters setting Port matrix for flexible PCB Layout Field upgradeable software Emergency Power Management with four power supplies
80
79
78
77
76
75
74
73
72
71
70
69 68
67
66
65
gate_0
64
63
62
61
Ordering Information __________
Part number PD69008 Temperature range -40 to 85C 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.
NC
NC
NC
NC
Port_neg7
NC
AGND1
port_sense7
port_sense6
Copyright (c) 2009 Rev. 1.0, 2009-03-15
Port_neg6
DGND1
NC
NC
NC
NC
NC
gate_6
gate_7
NC
NC
Microsemi
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
Package Information___________
The PD69008 is packed in an 80-pin LQFP plastic package, 12 x 12 x 1.4 mm with exposed pad
Figure 1: PD69008 Package Description
Copyright (c) 2009 Rev. 1.0, 2009-03-15
Microsemi
Analog Mixed Signal Group
Page 2 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 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) 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 ESD (Human Body Model)....................... -2 to 2 kV(3) Max junction temperature (Tjunc).................+150 C Junction-ambient thermal resistance (JA)..... 30 C/W(4) Junction-case thermal resistance (JC).........10 C/W Lead temperature (soldering, 10 s)............. 260 C Storage temperature................................-40 to +125 C
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 ). (4) with 4ML PCB - no air flow Stresses 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 MIN. NOM. MAX. +85 55 to 57 UNIT C V Operating temperature -40 At full load ambient Operational limitations (1) 15 to 44 44 to 55 (1) Operating functions depend on the input voltage, as shown in Figure 2.
Figure 2: Operational Ranges
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PD69008 - 8 Ports Power Over Ethernet Manager
Electrical Characteristics ______________________________________
PIN NAME: PAD TYPE: PARAMETER High Level Input Voltage Low Level Input Voltage Input Voltage Hysteresis Input High Current Input Low Current IIH IIL * SCL * DISABLE_PORTS_N Schmitt Trigger CMOS input, TTL Level with no internal Res. SYMBOL VIH VIL 0.3 -1 -1 1 1 MIN 2.0 0.8 TYP MAX UNIT V V V A A NOTE
PIN NAME:
PAD TYPE:
* * * * * CMOS
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 Input PARAMETER High Level Input Voltage Low Level Input Voltage Input Voltage Hysteresis Input High Current Input Low Current High Level Output Voltage IIH IIL SYMBOL VIH VIL 0.3 -1 -1 VPERI0.4V Low Level Output Voltage 0.4 V Iout=2 mA +1 +1 MIN 2.0 0.8 TYP MAX UNIT V V V A A V Iout=-2 mA NOTE
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 4 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME: * * * CMOS
PAD TYPE:
SCK CS_N MOSI I/O, TTL Level with internal pull up current source, with Schmitt
trigger Input PARAMETER High Level Input Voltage Low Level Input Voltage Input Voltage Hysteresis Input High Current Input Low Current High Level Output Voltage Low Level Output Voltage Pull up current 10 20 50 uA IIH IIL SYMBOL VIH VIL 0.3 -1 -1 VPERI0.4 V 0.4 V Iout = 2 mA +1 +1 MIN 2.0 0.8 TYP MAX UNIT V V V A A V Iout = -2 mA NOTE
PIN NAME: PAD TYPE: PARAMETER High Level Input Voltage Low Level Input Voltage Input Voltage Hysteresis Input High Current Input Low Current High Level Output Voltage Low Level Output Voltage Pull down current
*
MISO
CMOS I/O, TTL Level with internal pull up current source, with Schmitt trigger Input SYMBOL MIN TYP MAX UNIT NOTE VIH VIL 0.3 IIH IIL -1 -1 VPERI0.4V 0.4 V Iout = 2 mA +1 +1 2.0 0.8 V V V A A V Iout = -2 mA
10
20
50
uA
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 5 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME: * 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 res. Only)) SYMBOL MIN TYP MAX UNIT NOTE VIH 2.0 V
PAD TYPE:
PARAMETER High Level Input Voltage Low Level Output Voltage Low Level Input Voltage Input Voltage Hysteresis OFF State Output Current
VOL
0.4
V
Iout = 6 mA
VIL
0.8
V
0.3
V
-1
+1
uA
PIN NAME: PAD TYPE: PARAMETER Low Level Output Voltage OFF State Output Current
*
CS_EEPROM & LSL Multiplexed with INTERRUPT_N
CMOS Open Drain Output (external pull up res. Only)) SYMBOL MIN TYP MAX 0.4 UNIT V Iout = 6 mA NOTE
-1
+1
uA
PIN NAME: PAD TYPE: PARAMETER Pin Current Consumption
* VPORT_NEGx * REF_PORT_NEG High Voltage Analog Pad SYMBOL MIN -10 TYP MAX +10 UNIT uA NOTE Port driver OFF, Vport differential measurement OFF, AC generator OFF
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 6 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME: PAD TYPE: PARAMETER Operating Voltage Internal Current Consumption
*
PORT_SENSEx
Low Voltage Analog Pad SYMBOL MIN 0 TYP MAX 0.5 20 UNIT V uA NOTE With external 0.5 Ohms 2% to GND
PIN NAME: PAD TYPE: PARAMETER Operating Voltage (to GND) PIN NAME: PAD TYPE: PARAMETER Operating Voltage VMAIN Current Consumption
* VPORT_POSx * VPORT_NEGx High Voltage Analog Pad SYMBOL MIN 0 TYP MAX 62 UNIT V NOTE
*
VMAIN
High Voltage Supply Pad SYMBOL MIN 44 13.6 TYP MAX 57 16 UNIT V mA Total on VMAIN NOTE
PIN NAME: PAD TYPE: PARAMETER Operating voltage Pin Internal Current Consumption
* Analog
CP_OUT
SYMBOL
MIN 44
TYP
MAX 68 5
UNIT V mA
NOTE
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 7 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME: PAD TYPE: PARAMETER Operating Voltage * Analog SYMBOL MIN 34 TYP MAX 57 UNIT V NOTE
CP_IN
PIN NAME: PAD TYPE: PARAMETER ADC2p5 Output Voltage ADC2p5 Internal Current Consumption VCC2p5 Output Voltage
* Analog
ADC2p5, VCC2p5, VPERI, EXT_REG
SYMBOL
MIN 2.45
TYP
MAX 2.55 6
UNIT V mA
NOTE
Recommended external cap. = 47 nF to 135 nF
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 EXT_REG Output Current PIN NAME: PAD TYPE: PARAMETER Operating Voltage Current Consumption
6
mA
Without external NPN
6
mA
* ASICINI, I2CINI (max. capacitance between mode input to GND should NOT exceed 1nF) Analog SYMBOL MIN 0 -1 TYP MAX ADC2p5 +1 UNIT V uA NOTE
PIN NAME: PAD TYPE: PARAMETER Output Voltage
* Analog
IREF
SYMBOL
MIN 1.21
TYP
MAX 1.34
UNIT V
NOTE With external 24.9 K resistor to GND
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 8 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME: PAD TYPE: PARAMETER Output voltage
* Analog
FET_Gx
SYMBOL
MIN 12
TYP
MAX 15
UNIT V
NOTE
Dynamic Characteristics
The PD69008 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 circuit state'. In cases where the PD69008 is configured to operate in DC-Disconnect mode, and the output current is below Imin for more than Tmin , the PD is classified as `no-load' and is shutdown. In cases where the PD69008 is configured to operate in AC-Disconnect mode, and 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 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 ).
MIN.
TYP. 5 1
MAX.
UNIT s s
4 400 10 0.57 0 5 300 350 50 15
2
0 450 375 15.4 5
ms mA mA W mA mA ms mA ms us
7.5
10 400 400 75
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
From Vport to 2.8 Vdc DC modulation time for dc disconnect 27
500 49 600 2000
ms ms K
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 9 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 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 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 ).
MIN.
TYP. 5 1
MAX.
UNIT s s
4 400 10 0.57 0 5 300 686 50 15
2
0 450 643 36.25 5
ms mA mA W mA mA ms mA ms us
7.5
10 400
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
728
771 75
From Vport to 2.8 Vdc DC modulation time for dc disconnect 27
500 49 600 2000
ms ms K
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 10 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
Pin Description
Pin 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
________________________________________________________________________________
Pin Name [Package] Pin Type Gnd Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Description Exposed pad connected to underside of die Port 0 positive input Port 1 positive input Port 2 positive input Port 3 positive input Port 4 positive input Port 5 positive input Port 6 positive input Port 7 positive input Not Connected Not Connected Not Connected Not Connected Charge Pump Output Pulse Charge pump input Main Voltage supply Port negative reference Digital ground Power supply monitoring Multiplexed with General purpose I/O Power supply monitoring Multiplexed with General purpose I/O Power supply monitoring Multiplexed with General purpose I/O Analog ground Port 6 negative voltage feeding Channel current monitoring Port 6 - Gate control Port 7 - Gate control Channel current monitoring Port 7 negative voltage feeding Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected GND Digital Input Digital I/O Digital I/O Digital ground Disable All Ports Power - Active Low SPI bus, Chip Select SPI bus, Master Data in/slave out
PAD VPORT_POS0 VPORT_POS1 VPORT_POS2 VPORT_POS3 VPORT_POS4 VPORT_POS5 VPORT_POS6 VPORT_POS7 NC NC NC NC CP_OUT CP_IN VMAIN REF_PORT_NEG DGND2 POWER_GOOD0 MULTIPLEXED WITH GPIO_0 POWER_GOOD1 MULTIPLEXED WITH GPIO_1 POWER_GOOD2 MULTIPLEXED WITH GPIO_4 AGND1 VPORT_NEG6 PORT_SENSE6 FET_G6 FET_G7 PORT_SENSE7 VPORT_NEG7 NC NC NC NC NC NC NC NC NC NC NC NC DGND1 DISABLE_PORTS_N CS_N MISO
Analog I/O Supply Supply Analog I/O GND Digital I/O Digital I/O Digital I/O GND Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O
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PD69008 - 8 Ports Power Over Ethernet Manager
Pin 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
Pin Name [Package] MOSI SCK SCL SDA_OUT MULTIPLEXED WITH TEST_MODE SDA RESET_N IREF ASICINI VCC2P5 I2CINI QGND ADC2P5 EXT_REG VPERI CS_EEPROM_N & LSL MULTIPLEXED WITH INTERRUPT_N LSD MULTIPLEXED WITH GPIO_2 LSC MUXED WITH GPIO_3 SENSE_NEG AGND2 VPORT_NEG0 PORT_SENSE0 FET_G0 FET_G1 PORT_SENSE1 VPORT_NEG1 VPORT_NEG2 PORT_SENSE2 FET_G2 FET_G3 PORT_SENSE3 VPORT_NEG3 VPORT_NEG4 PORT_SENSE4 FET_G4 FET_G5 PORT_SENSE5 VPORT_NEG5
Pin Type Digital I/O Digital I/O Digital Input Digital I/O Digital I/O Digital I/O Analog I/O Analog Input Internal Regulator Analog Input GND Internal reference Analog Out Analog Out Digital Output Open drain Digital I/O Digital I/O Analog I/O GND Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O Analog I/O
Description SPI bus, Master Data out/slave in SPI bus, Serial clock I/O I2C bus, Serial Clock Input Third pin in I2C protocol Test Mode Pin - Must be tied to VPERI with pull-up resistor if not used I2C bus, open drain Active Low Reset I/O Current reference Analog input for Asic initialization Internal 2.5v source - not to be used for external devices Analog input for I2C initialization Quiet analog ground ADC reference - not to be used for external devices External regulation Regulated 3.3v output voltage source for external devices SPI bus, EEPROM Chip Select & LED Stream Latch (if set) Multiplexed with interrupt out LED Stream Data - data out Multiplexed with General purpose I/O LED Stream CLK- CLK out Multiplexed with General purpose I/O Port sense reference Analog ground Port 0 negative voltage feeding Channel current monitoring Port 0 - Gate control Port 1 - Gate control Channel current monitoring Port 1 negative voltage feeding Port 2 negative voltage feeding Channel current monitoring Port 2 - Gate control Port 3 - Gate control Channel current monitoring Port 3 negative voltage feeding Port 4 negative voltage feeding Channel current monitoring Port 4 - Gate control Port 5 - Gate control Channel current monitoring Port 5 negative voltage feeding
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 12 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
Configuration Pins _________________________________________
There are two main configuration pins utilized in the PD69008 (as shown in Figure 3) which configure the operation mode of the chip and the communication addresses (SPI and I2C).
VMain VPeri 3.3v
Vperi
Vmain
Ex _Reg AD C2P5
R1 R2
ASIC_INI
P D69008
I2C _IN I
10k 10k
QGN D
Figure 3: Electronic Connection of Configuration Pins
Application information _______________________________________
The PD69008 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 dedicated PoE PCB, mounted on top of the switch's main PCB or into a 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 the PDs (Powered Devices) such as telephones, cameras, wireless LANs, etc. These Midspans include the PD69008 IC as a PoE control element, destined to inject power over the communication lines. Figure 4 and Figure 5 provide examples of basic applications of the PD69008 in an AC Disconnect Mode and the DC Disconnect Mode:
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 13 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
PD69008 - 8 Ports Power Over Ethernet Manager
Vperi
Vmain
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 14 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
10K Vperi 10K
Figure 4: Basic Application with AC Disconnect Support
Figure 5: Basic Application with DC Disconnect Support
24.9k Vmain 24.9k
46.4k 46.4k
22.6k 22.6k
PD69008 - 8 Ports Power Over Ethernet Manager
The information contained in the document is PROPRIETARY AND CONFIDENTIAL information of Microsemi and cannot be copied, published, uploaded, posted, transmitted, distributed or disclosed or used without the express duly signed written consent of Microsemi If the recipient of this document has entered into a disclosure agreement with Microsemi, then the terms of such Agreement will also apply . 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 lifesupport 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 0.1 / 15 March 2009 1.0 / 25-Aug-09 Para. Affected Description Initial Preliminary Release Release
(c) 2009 Microsemi Corp. All rights reserved.
For technical support contact:sales_AMSG@microsemi.com.
Cat. No. 06-0079-058
Copyright (c) 2009 Microsemi Rev. 1.0, 2009-03-15 Analog Mixed Signal Group Page 15 2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308

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