PD69008 [MICROSEMI]
8 Ports Power Over Ethernet Manager; 8端口以太网供电管理器
| 型号： | PD69008 |
| 厂家： | 
Microsemi |
| 描述： | 8 Ports Power Over Ethernet Manager |
| 文件： | 总15页 (文件大小：460K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PD69008 - 8 Ports Power Over Ethernet Manager
Description _________________
Supported Features __________
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 Auto Mode features:
♦
♦
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 8 independent two-pairs power ports or
64-pairs ports
PD69008 device is an 8-port, mixed-signal, high-
voltage 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 multi-
port and highly populated Ethernet switches and
routers.
♦
♦
Can cascade up to 8 PoE devices (64 ports)
EEPROM interface for software patching and
parameter configuration
♦
♦
♦
♦
I2C Host interface
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
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
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
Enhanced SPI bus for internal communication
External EEPROM for system parameters update
SW ROM patch option
RoHS compliant
Pin Configuration _____________
Enhanced Modes Additional Features:
♦
♦
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
60
59
58
57
56
55
54
53
LSC/ GPIO3
LSD/ GPIO2
Vport_pos0
Vport_pos1
1
2
♦
♦
♦
♦
♦
CS_EEPROM_n/ LSL /
Interrupt_n
Vport_pos2
Vport_pos3
Vport_pos4
3
Vperi
4
Ext_reg
5
Vport_pos5
Vport_pos6
ADC2p5
QGND
6
7
I2CINI
Vport_pos7
8
Vcc2p5
52
51
50
NC
NC
9
ASIC_INI
Iref
10
11
12
13
14
15
16
17
18
NC
49
48
47
46
Reset_n
NC
PD69008
SDA
CP_OUT
SDA_out/ Test_mode
SCL
CP_IN
Vmain
Ordering Information __________
45
44
43
SCK
Ref_port_neg
DGND2
Date Code
MOSI
MISO
Good0/GPIO0
Good1/GPIO1
rGood2/GPIO4
Part number
Temperature
range
Package
42
41
CS_n
19
20
Disable_ports_n
PD69008
-40 to 85°C
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.
Copyright © 2009
Rev. 1.0, 2009-03-15
Microsemi
Analog Mixed Signal Group
Page 1
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
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 © 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 ………………………………..……
PORT_NEGx, REF_PORT_NEG……..………..… -8.4 to 80V(1)
VPORT_POSx - VPORT_NEGx……………..…..……
-0.3 to 80 V(1)
-0.3 to 80 V(1)
V
PORT_SENSEx …..……..……..……..………..…-7.2 to 25 V (1)
Gate_x………………………………..………
VCC2p5, ADC2p5………….………………………...
-0.3 to 18 V
-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 (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
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
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.
UNIT
Operating temperature
At full load ambient
-40
+85
° C
Operational limitations (1)
15 to 44
44 to 55
55 to 57
V
(1) Operating functions depend on the input voltage, as shown in Figure 2.
Figure 2: Operational Ranges
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Page 3
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PD69008 - 8 Ports Power Over Ethernet Manager
Electrical Characteristics ______________________________________
PIN NAME:
PAD TYPE:
•
•
SCL
DISABLE_PORTS_N
Schmitt Trigger CMOS input, TTL Level with no internal Res.
PARAMETER
SYMBOL
VIH
MIN
TYP
MAX
UNIT
V
NOTE
High Level Input Voltage
Low Level Input Voltage
Input Voltage Hysteresis
Input High Current
2.0
VIL
0.8
V
0.3
-1
V
IIH
IIL
1
1
μA
μA
Input Low Current
-1
PIN NAME:
•
•
•
•
•
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
PAD TYPE:
CMOS 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
SYMBOL
VIH
MIN
TYP
MAX
UNIT
V
NOTE
2.0
VIL
0.8
V
0.3
-1
V
IIH
IIL
+1
+1
μA
μA
V
Input Low Current
-1
High Level Output Voltage
VPERI-
0.4V
Iout=-2 mA
Iout=2 mA
Low Level Output Voltage
0.4
V
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Page 4
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
•
•
•
SCK
CS_N
MOSI
CMOS I/O, TTL Level with internal pull up current source, with Schmitt
trigger Input
PARAMETER
SYMBOL
VIH
MIN
TYP
MAX
UNIT
V
NOTE
High Level Input Voltage
Low Level Input Voltage
Input Voltage Hysteresis
Input High Current
2.0
VIL
0.8
V
0.3
-1
V
IIH
IIL
+1
+1
μA
μA
V
Input Low Current
-1
High Level Output
Voltage
VPERI-
0.4 V
Iout = -2 mA
Low Level Output
Voltage
0.4
50
V
Iout = 2 mA
Pull up current
10
20
uA
PIN NAME:
PAD TYPE:
•
MISO
CMOS I/O, TTL Level with internal pull up current source, with Schmitt
trigger Input
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
High Level Input Voltage
Low Level Input Voltage
Input Voltage Hysteresis
Input High Current
VIH
2.0
V
VIL
0.8
V
0.3
-1
V
IIH
IIL
+1
+1
μA
μA
V
Input Low Current
-1
High Level Output
Voltage
VPERI-
0.4V
Iout = -2 mA
Low Level Output
Voltage
0.4
50
V
Iout = 2 mA
Pull down current
10
20
uA
Copyright © 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:
PAD TYPE:
•
•
•
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))
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
High Level Input
Voltage
VIH
2.0
V
Low Level Output
Voltage
VOL
0.4
0.8
V
V
Iout = 6 mA
Low Level Input
Voltage
VIL
Input Voltage
Hysteresis
0.3
-1
V
OFF State Output
Current
+1
uA
PIN NAME:
•
CS_EEPROM & LSL Multiplexed with INTERRUPT_N
PAD TYPE:
CMOS Open Drain Output (external pull up res. Only))
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
Low Level Output
Voltage
0.4
V
Iout = 6 mA
OFF State Output
Current
-1
+1
uA
PIN NAME:
•
•
VPORT_NEGx
REF_PORT_NEG
PAD TYPE:
High Voltage Analog Pad
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
Pin Current Consumption
-10
+10
uA
Port driver OFF, Vport
differential measurement
OFF, AC generator OFF
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
•
PORT_SENSEx
Low Voltage Analog Pad
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
Operating Voltage
0
0.5
V
With external 0.5 Ohms 2%
to GND
Internal Current
Consumption
20
uA
PIN NAME:
•
•
VPORT_POSx
VPORT_NEGx
PAD TYPE:
High Voltage Analog Pad
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
Operating Voltage (to
GND)
0
62
V
PIN NAME:
PAD TYPE:
PARAMETER
•
VMAIN
High Voltage Supply Pad
SYMBOL
MIN
TYP
MAX
57
UNIT
V
NOTE
Operating Voltage
44
VMAIN Current
Consumption
13.6
16
mA
Total on VMAIN
PIN NAME:
PAD TYPE:
PARAMETER
•
CP_OUT
Analog
SYMBOL
MIN
TYP
MAX
68
UNIT
V
NOTE
Operating voltage
44
Pin Internal Current
Consumption
5
mA
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
•
CP_IN
Analog
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
Operating Voltage
34
57
V
PIN NAME:
PAD TYPE:
PARAMETER
•
ADC2p5, VCC2p5, VPERI, EXT_REG
Analog
SYMBOL
MIN
TYP
MAX
2.55
6
UNIT
V
NOTE
ADC2p5 Output Voltage
2.45
ADC2p5 Internal Current
Consumption
mA
Recommended external cap.
= 47 nF to 135 nF
VCC2p5 Output Voltage
2.37
3.10
2.62
3.5
6
V
V
Recommended external cap.
= 47 nF to 135 nF
VPERI Output Voltage
Recommended external cap.
= 1 uF to 4.7 uF
VPERI External Current
Load
mA
mA
Without external NPN
EXT_REG Output
Current
6
PIN NAME:
•
ASICINI, I2CINI
(max. capacitance between mode input to GND should NOT exceed 1nF)
PAD TYPE:
Analog
PARAMETER
SYMBOL
MIN
0
TYP
MAX
ADC2p5
+1
UNIT
V
NOTE
Operating Voltage
Current Consumption
-1
uA
PIN NAME:
PAD TYPE:
PARAMETER
•
IREF
Analog
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
Output Voltage
1.21
1.34
V
With external 24.9 K resistor
to GND
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
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PD69008 - 8 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
•
FET_Gx
Analog
PARAMETER
Output voltage
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
12
15
V
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
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Automatic recovery from
overload shutdown
TOVLREC value, measured from port shutdown
(can be modified through control port)
5
s
Automatic recovery from no-load
shutdown
TUDLREC value, measured from port shutdown
(can be modified through control port)
1
2
s
Cutoff timers accuracy
Typical accuracy of Tcut
4
0
ms
mA
mA
For t=50 ms, Cload=180 uF max.
Inrush current
IInrsh
Iport
400
10
450
375
Continuous operation after startup period.
Output current operating range
Output power available,
operating range
Pport
Continuous operation after startup period,
at port output.
0.57
0
15.4
5
W
Off mode current
Imin1
Imin2
Must disconnect for t greater than TUVL
mA
mA
May or may not disconnect for t greater
than TUVL
5
7.5
10
PD power maintenance request
drop-out time limit
TPMDO
Buffer period to handle transitions
300
400
ms
Over load current detection range Icut
Time limited to TOVL
350
50
400
75
mA
ms
Over load time limit
Turn on rise time
TOVL
Trise
From 10% to 90% of Vport
(Specified for PD load consisting of 100 uF capacitor
in parallel to 200 Ω).
15
us
Turn off time
Toff
TMPS
Zac
From Vport to 2.8 Vdc
500
ms
ms
KΩ
Time Maintain Power Signature
AC disconnect impedance
DC modulation time for dc disconnect
49
27
600
2000
Copyright © 2009
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Microsemi
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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
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Automatic recovery from
overload shutdown
TOVLREC value, measured from port shutdown
(can be modified through control port)
5
s
Automatic recovery from no-load
shutdown
TUDLREC value, measured from port shutdown
(can be modified through control port)
1
2
s
Cutoff timers accuracy
Typical accuracy of Tcut
4
0
ms
mA
mA
For t=50 ms, Cload=180 uF max.
Inrush current
IInrsh
Iport
400
10
450
643
Continuous operation after startup period.
Output current operating range
Output power available,
operating range
Pport
Continuous operation after startup period,
at port output.
0.57
0
36.25
W
Off mode current
Imin1
Imin2
Must disconnect for t greater than TUVL
5
mA
mA
May or may not disconnect for t greater
than TUVL
5
7.5
10
PD power maintenance request
drop-out time limit
TPMDO
Buffer period to handle transitions
300
400
ms
Over load current detection range Icut
Time limited to TOVL
686
50
728
771
75
mA
ms
Over load time limit
Turn on rise time
TOVL
Trise
From 10% to 90% of Vport
(Specified for PD load consisting of 100 uF capacitor
in parallel to 200 Ω).
15
us
Turn off time
Toff
From Vport to 2.8 Vdc
500
ms
ms
KΩ
Time Maintain Power Signature
AC disconnect impedance
TMPS
Zac
DC modulation time for dc disconnect
49
27
600
2000
Copyright © 2009
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Microsemi
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
Pin Name
[Package]
Pin Type
Description
0
1
2
3
4
5
6
7
8
PAD
VPORT_POS0
VPORT_POS1
VPORT_POS2
VPORT_POS3
VPORT_POS4
VPORT_POS5
VPORT_POS6
VPORT_POS7
NC
Gnd
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
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
9
10
11
12
13
14
15
16
17
18
NC
NC
NC
CP_OUT
CP_IN
VMAIN
Not Connected
Not Connected
Not Connected
Charge Pump Output Pulse
Charge pump input
Main Voltage supply
Port negative reference
Digital ground
Analog I/O
Supply
Supply
Analog I/O
GND
Digital I/O
REF_PORT_NEG
DGND2
POWER_GOOD0 MULTIPLEXED
WITH GPIO_0
Power supply monitoring Multiplexed with General
purpose I/O
19
20
21
POWER_GOOD1 MULTIPLEXED
WITH GPIO_1
Digital I/O
Digital I/O
GND
Power supply monitoring Multiplexed with General
purpose I/O
POWER_GOOD2 MULTIPLEXED
WITH GPIO_4
Power supply monitoring Multiplexed with General
purpose I/O
AGND1
Analog ground
22
23
24
25
26
27
VPORT_NEG6
PORT_SENSE6
FET_G6
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Port 6 negative voltage feeding
Channel current monitoring
Port 6 – Gate control
FET_G7
Port 7 – Gate control
PORT_SENSE7
VPORT_NEG7
Channel current monitoring
Port 7 negative voltage feeding
28
29
30
31
32
33
34
35
36
37
38
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
39
40
NC
Not Connected
Digital ground
DGND1
GND
41
42
43
DISABLE_PORTS_N
Digital Input
Digital I/O
Digital I/O
Disable All Ports Power – Active Low
SPI bus, Chip Select
SPI bus, Master Data in/slave out
CS_N
MISO
Copyright © 2009
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Microsemi
Page 11
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PD69008 - 8 Ports Power Over Ethernet Manager
Pin
Pin Name
[Package]
Pin Type
Description
44
45
46
47
MOSI
SCK
SCL
Digital I/O
Digital I/O
Digital Input
Digital I/O
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
SDA_OUT MULTIPLEXED WITH
TEST_MODE
48
49
50
51
52
SDA
RESET_N
IREF
ASICINI
VCC2P5
Digital I/O
Digital I/O
Analog I/O
Analog Input
I2C bus, open drain
Active Low Reset I/O
Current reference
Analog input for Asic initialization
Internal Regulator Internal 2.5v source – not to be used for external
devices
53
54
55
I2CINI
QGND
ADC2P5
Analog Input
GND
Analog input for I2C initialization
Quiet analog ground
Internal reference ADC reference – not to be used for external
devices
56
57
EXT_REG
VPERI
Analog Out
Analog Out
External regulation
Regulated 3.3v output voltage source for external
devices
58
59
60
CS_EEPROM_N & LSL
MULTIPLEXED WITH INTERRUPT_N
Digital Output Open SPI bus, EEPROM Chip Select & LED Stream
drain
Latch (if set) Multiplexed with interrupt out
LSD MULTIPLEXED WITH GPIO_2
Digital I/O
LED Stream Data – data out Multiplexed with
General purpose I/O
LSC MUXED WITH GPIO_3
Digital I/O
LED Stream CLK– CLK out Multiplexed with
General purpose I/O
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
SENSE_NEG
AGND2
VPORT_NEG0
PORT_SENSE0
FET_G0
Analog I/O
GND
Port sense reference
Analog ground
Port 0 negative voltage feeding
Channel current monitoring
Port 0 – Gate control
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
FET_G1
Port 1 – Gate control
PORT_SENSE1
VPORT_NEG1
VPORT_NEG2
PORT_SENSE2
FET_G2
Channel current monitoring
Port 1 negative voltage feeding
Port 2 negative voltage feeding
Channel current monitoring
Port 2 – Gate control
FET_G3
Port 3 – Gate control
PORT_SENSE3
VPORT_NEG3
VPORT_NEG4
PORT_SENSE4
FET_G4
FET_G5
PORT_SENSE5
VPORT_NEG5
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 © 2009
Rev. 1.0, 2009-03-15
Analog Mixed Signal Group
Microsemi
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
Ex_Reg
ADC2P5
ASIC_INI
PD69008
I2C_INI
QGND
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 © 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
Figure 4: Basic Application with AC Disconnect Support
Figure 5: Basic Application with DC Disconnect Support
Copyright © 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
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
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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-
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Microsemi disclaims any express or implied warranty, relating to sale and/or use of Microsemi products including
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located on the web at http://www.microsemi.com/legal/tnc.asp
Revision History
© 2009 Microsemi Corp.
All rights reserved.
For technical support contact:sales_AMSG@microsemi.com.
Cat. No. 06-0079-058
Copyright © 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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