PD69012 [MICROSEMI]
12 Ports Power Over Ethernet Manager; 12端口以太网供电管理器
| 型号： | PD69012 |
| 厂家： | 
Microsemi |
| 描述： | 12 Ports Power Over Ethernet Manager |
| 文件： | 总18页 (文件大小：426K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PD69012 - 12 Ports Power Over Ethernet Manager
Description _________________
Supported Features __________
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 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 12 independent 2-pairs power ports or 6
independent 4-pairs ports
PD69012 device is a 12-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 (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
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
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
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
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:
Internal power on reset
• 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
Enhanced Modes Additional Features:
Pin Configuration _____________
♦
♦
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
♦
♦
♦
♦
♦
LC
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
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
Emergency Power Management with 4 power
supplies
Vport_pos5
Vport_pos6
ADC2p5
Qgnd
6
7
I2CINI
Vport_pos7
Vport_pos8
Vport_pos9
8
Vcc2p5
9
ASIC_INI
Iref
10
11
12
13
14
15
16
17
18
Vport_pos10
Reset_n
Vport_pos11
CP_OUT
PD69012
SDA
Ordering Information __________
Part number Temperature range
SDA_out/ Test_mode
CP_IN
Vmain
SCL
SCK
Ref_port_neg
Date Code
Package
PIN PACKAGE
MOSI
MISO
Dgnd2
PowerGood0/GPIO0
PowerGood1/GPIO1
PowerGood2/GPIO4
PART
TEMP. RANGE
CS_n
19
20
Disable_ports_n
PD69012
-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, 2009-03-03
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 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
Microsemi
Rev. 1.0, 2009-03-03
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 ………………………………..……
VPORT_NEGx, REF_PORT_NEG……..………..… -8.4 to 80V(1)
PORT_POSx - VPORT_NEGx……………..…..……
-0.3 to 80 V(1)
-0.3 to 80 V(1)
V
PORT_SENSEx …..……..……..……..………..…-7.2 to 25 V (1)
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.
Gate_x………………………………..………
VCC2p5, ADC2p5………….………………………...
-0.3 to 18 V
-0.3 to 3 V
.
(3) ESD testing is performed in accordance with the Human Body
Model (CZap = 100 pF, RZap = 1500 Ω).
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
(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
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.
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
Microsemi
Rev. 1.0, 2009-03-03
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:
•
•
SCL
DISABLE_PORTS_N
PAD TYPE:
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:
PAD TYPE:
•
•
•
•
•
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
CMOS I/O, TTL Level with no internal pull up / pull down resistor, 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
V
Iout = 2 mA
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-03
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:
•
•
•
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
Pull Up Current
0.4
50
V
Iout = 2 mA
10
20
uA
PIN NAME:
•
MISO
PAD TYPE:
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
Input Low Current
High Level Output Voltage
2.0
VIL
0.8
V
0.3
-1
V
IIH
IIL
+1
+1
μA
μA
V
-1
VPERI-
0.4 V
Iout = -2 mA
Low Level Output Voltage
Pull Down Current
0.4
50
V
Iout = 2 mA
10
20
uA
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-03
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:
•
•
•
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))
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
NOTE
High Level Input Voltage
Low Level Output Voltage
VIH
2.0
V
VOL
0.4
0.8
V
Iout = 6 mA
Low Level Input Voltage
Input Voltage Hysteresis
OFF State Output Current
VIL
V
V
0.3
-1
+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
0.4
UNIT
V
NOTE
Low Level Output Voltage
OFF State Output Current
Iout = 6mA
-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
PIN NAME:
•
PORT_SENSEx
PAD TYPE:
Low Voltage Analog Pad
PARAMETER
Operating Voltage
SYMBOL MIN
TYP
MAX
UNIT
NOTE
0
0.5
V
With external 0.5 ohm 2% to
GND
Internal Current Consumption
20
uA
Copyright © 2009
Microsemi
Rev. 1.0, 2009-03-03
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:
•
•
VPORT_POSx
VPORT_NEGx
High Voltage Analog Pad
PARAMETER
SYMBOL MIN
TYP
MAX
UNIT
NOTE
Operating Voltage (to GND)
0
62
V
PIN NAME:
•
VMAIN
PAD TYPE:
High Voltage Supply Pad
PARAMETER
SYMBOL MIN
TYP
MAX
57
UNIT
V
NOTE
Operating Voltage
VMAIN Current Consumption
44
13.6
16
mA
Total on VMAIN
PIN NAME:
•
CP_OUT
PAD TYPE:
Analog
PARAMETER
Operating Voltage
SYMBOL MIN
TYP
MAX
68
UNIT
V
NOTE
44
Pin Internal Current
Consumption
5
mA
PIN NAME:
•
CP_IN
PAD TYPE:
Analog
PARAMETER
Operating Voltage
SYMBOL MIN
TYP
MAX
UNIT
NOTE
34
57
V
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 8
PD69012 - 12 Ports Power Over Ethernet Manager
PIN NAME:
PAD TYPE:
•
•
•
•
ADC2p5
VCC2p5
VPERI
EXT_REG
Analog
PARAMETER
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
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
EXT_REG Output Current
6
6
mA
mA
Without external NPN
PIN NAME:
•
•
ASICINI
I2CINI
(max. capacitance between mode input to GND should NOT exceed 1nF)
Analog
PAD TYPE:
PARAMETER
SYMBOL MIN
TYP
MAX
ADC2p5
+1
UNIT
V
NOTE
Operating Voltage
Current Consumption
0
-1
uA
PIN NAME:
PAD TYPE:
•
IREF
Analog
PARAMETER
SYMBOL MIN
TYP
MAX
UNIT
NOTE
Output Voltage
1.21
1.34
V
With external 24.9 K resistor
to GND
PIN NAME:
PAD TYPE:
•
FET_Gx
Analog
PARAMETER
Output Voltage
SYMBOL MIN
TYP
MAX
UNIT
NOTE
12
15
V
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 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
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Automatic recovery from
overload shutdown
TOVLREC value, measured from port shutdown
(can be modified through control port)
5
s
s
Automatic recovery from no-load
shutdown
TUDLREC value, measured from port shutdown
(can be modified through control port)
1
2
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
15
us
(Specified for PD load consisting of 100 uF
capacitor in parallel to 200 Ω).
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, 2009-03-03
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 10
PD69012 - 12 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
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
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, 2009-03-03
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 11
PD69012 - 12 Ports Power Over Ethernet Manager
Pin Description_____________________________________________
Pin
Pin Name
Pin Type
Description
0
PAD
VPORT_POS0
Gnd
Analog I/O
Exposed pad connected to underside of die
Port 0 positive input
1
VPORT_POS1
VPORT_POS2
VPORT_POS3
VPORT_POS4
VPORT_POS5
VPORT_POS6
VPORT_POS7
VPORT_POS8
VPORT_POS9
VPORT_POS10
VPORT_POS11
CP_OUT
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
Supply
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
Port 8 positive input
Port 9 positive input
Port 10 positive input
Port 11 positive input
Charge pump output pulse
Charge pump input
Main Voltage supply
Port negative reference
Digital ground
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CP_IN
VMAIN
Supply
REF_PORT_NEG
DGND2
Analog I/O
GND
POWER_GOOD0 MULTIPLEXED WITH
GPIO_0
Digital I/O
Power supply monitoring multiplexed with general purpose
I/O
POWER_GOOD1 MULTIPLEXED WITH
GPIO_1
Digital I/O
Digital I/O
Power supply monitoring multiplexed with general purpose
I/O
19
20
POWER_GOOD2 MULTIPLEXED WITH
GPIO_4
Power supply monitoring multiplexed with general purpose
I/O
AGND1
GND
Analog ground
21
22
23
24
25
26
27
28
VPORT_NEG6
PORT_SENSE6
FET_G6
Analog I/O
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
VPORT_NEG8
Channel current monitoring
Port 7 negative voltage feeding
Port 8 negative voltage feeding
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 12
PD69012 - 12 Ports Power Over Ethernet Manager
Pin
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
Pin Name
PORT_SENSE8
FET_G8
Pin Type
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
GND
Description
Channel current monitoring
Port 8 – Gate control
FET_G9
Port 9 – Gate control
PORT_SENSE9
VPORT_NEG9
VPORT_NEG10
PORT_SENSE10
FET_G10
Channel current monitoring
Port 9 negative voltage feeding
Port 10 negative voltage feeding
Channel current monitoring
Port 10 – Gate control
FET_G11
Port 11 – Gate control
PORT_SENSE11
VPORT_NEG11
DGND1
Channel current monitoring
Port 11 negative voltage feeding
Digital ground
DISABLE_PORTS_N
CS_N
Digital Input
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital Input
Digital I/O
Disable All Ports Power – Active Low
SPI bus, Chip Select
MISO
SPI bus, Master Data in/slave out
SPI bus, Master Data out/slave in
SPI bus, Serial clock I/O
I2C bus, Serial Clock Input
MOSI
SCK
SCL
SDA_OUT MULTIPLEXED WITH
TEST_MODE
Third pin in I2C protocol
Test Mode Pin – Must be tied to VPERI with pull-up
resistor if not used
SDA
RESET_N
IREF
Digital I/O
Digital I/O
Analog I/O
I2C bus, open drain
Active Low Reset I/O
Current reference
48
49
50
51
52
53
54
55
56
57
58
ASICINI
VCC2P5
I2CINI
Analog Input Analog input for chip initialization
Internal Regulator Internal 2.5 v source – not to be used for external devices
Analog Input Analog input for I2C initialization
QGND
GND
Quiet analog ground
ADC2P5
EXT_REG
VPERI
Internal reference ADC reference – not to be used for external devices
Analog Out
Analog Out
External regulation
Regulated 3.3 v output voltage source for external devices
CS_EEPROM_N & LSL MULTIPLEXED
WITH INTERRUPT_N
Digital Output SPI bus, EEPROM Chip Select & Led Stream Latch (if set)
Open drain
Multiplexed with interrupt out
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 13
PD69012 - 12 Ports Power Over Ethernet Manager
Pin
Pin Name
Pin Type
Description
LSD MULTIPLEXED WITH GPIO_2
Digital I/O
LED Stream Data – data out Multiplexed with General
purpose I/O
59
LSC MULTIPLEXED WITH GPIO_3
Digital I/O
Led Stream CLK– CLK out Multiplexed with General
purpose I/O
60
SENSE_NEG
AGND2
Analog I/O
GND
Port sense reference
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Analog ground
VPORT_NEG0
PORT_SENSE0
FET_G0
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
Port 0 negative voltage feeding
Channel current monitoring
Port 0 – Gate control
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
Channel current monitoring
Port 3 negative voltage feeding
Port 4 negative voltage feeding
Channel current monitoring
Port 4 – Gate control
FET_G5
Port 5 – Gate control
PORT_SENSE5
VPORT_NEG5
Channel current monitoring
Port 5 negative voltage feeding
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 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
Ex_Reg
ADC2P5
ASIC_INI
PD69012
I2C_INI
QGND
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÷57v
Vport_ Pos0
Vperi 3.3v
46.4K 200nF
Vport_Pos
Vport_Neg
FET_gate
Ext_Reg
CP_ OUT
CP_IN
Vport_ Sense
Vport_ Neg0
Fuse
0.5R
x12
VCC2P5
ADC2P5
x12
R1
R2
Vport_Pos
Vport_ Neg
Vport_Pos 11
Vport_Neg11
ASIC_INI
I2 C_ INI
Vport_ Sense
Sense_ Neg
MOSI
R3
R4
MISO
Reset
Disable_ Ports_N
Interupt_Out
SCK
SPI Communication
Bus
CS0
EEPROM_CS
LSC
I2C Co mmunication Bus
LSD
LED Driving
SDA
PG0
PG1
PG2
SCL
Ref
Port Neg
To Power Supplies
Iref
SDA_OUT
Vperi 3.3v
Power Good
Signals
Add if line
is not in use
Vmain
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÷57v
Vport_Pos0
Vperi 3.3v
46.4K 47nF
Vport_Pos
Vport_Neg
FET_ gate
Ext_Reg
CP_OUT
CP_IN
Vport_ Sense
Vport_Neg0
Fuse
0.5R
x12
VCC2P5
ADC2P5
x12
R1
R2
Vport_Pos
Vport_Neg
Vport_Pos 11
Vport_Neg11
ASIC_INI
I2C_INI
Vport_ Sense
Sense_Neg
R3
R4
MOSI
MISO
SCK
Reset
Disable_ Ports_N
Interupt_Out
SPI Communication
Bus
CS0
EEPROM_CS
LSC
I2C Co mmunication Bus
LSD
LED Driving
SDA
PG0
PG1
PG2
SCL
Ref
Port Neg
To Power Supplies
Iref
SDA_ OUT
Vperi 3.3v
Power Good
Signals
Add if line
is not in use
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
© 2009 Microsemi Corp.
All rights reserved.
For support contact: sales_AMSG@microsemi.com
Visit our web site at: www.microsemi.com
Cat. No. 06-0078-058
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 18
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