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PD64012 Datasheet(PDF) 7 Page - List of Unclassifed Manufacturers

Part # PD64012
Description  12-channel PoE Manager
PDF  16 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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PD64012 Datasheet(HTML) 7 Page - List of Unclassifed Manufacturers

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PD64012
12-CHANNEL PoE MANAGER
PIN
PIN NAME
PIN TYPE
PIN DESCRIPTION
51. AGND
Supply
Analog ground
52. PORT_SENSE5
Analog I/O
Channel current monitoring
53. VPORT_NEG4
Analog I/O
Port 4 negative voltage feeding
54. PORT_SENSE4
Analog I/O
Channel current monitoring
55. VPORT_NEG3
Analog I/O
Port 3 negative voltage feeding
56. PORT_SENSE3
Analog I/O
Channel current monitoring
57. PORT_SENSE2
Analog I/O
Channel current monitoring
58. VPORT_NEG2
Analog I/O
Port 2 negative voltage feeding
59. PORT_SENSE1
Analog I/O
Channel current monitoring
60. VPORT_NEG1
Analog I/O
Port 1 negative voltage feeding
61. PORT_SENSE0
Analog I/O
Channel current monitoring
62. SENSE_NEG
Analog I/O
Port sense reference
63. VPORT_NEG0
Analog I/O
Port 0 negative voltage feeding
64. Reserved
TBD
Not connected
Functional Description ________
Operational Modes
The PD64012 supports two main modes of operation,
based on two different architectures, as described
hereafter. The two modes are: Enhanced mode and
Automatic mode.
Enhanced mode – in this mode of operation, the
PD64012s communicate with the PD63000 PoE
MCU (dedicated MCU for Power over Ethernet
tasks), through a Serial Parallel Interface (SPI) bus.
In this mode, all PD64012s are directly connected to
the PD63000 through the SPI, in slave mode. The
MCU is used for additional Power over Ethernet
features, such as:
♦ Legacy PDs detection (including Cisco discovery)
♦ Enhanced power management algorithms
♦ LED indicators support
♦ Port matrix control
♦ Communication protocol translator.
The
switch host
CPU
communicates
with
the
PD63000, via an isolated I
2C or UART bus, as shown
in Figure 3.
PD64012
#00
PD64012
#01
PD64012
#10
PD64012
#11
MISO
SCK
MOSI
I/O Opto
Host
CPU
CS0_N
CS1_N
CS0_N
CS1_N
CS0_N
CS1_N
CS0_N
CS1_N
CS3
CS2
CS1
CS0
I2C or UART
SPI Bus
PD63000
PoE MCU
Pull-down
resistor
Figure 3: Enhanced Mode
www.powerdsine.com
© PowerDsine 2003
Information in this document subject
06-0003-058 (Rev. 2.8) / 5 August 2004
to change without prior notice.
7



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