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PANASONIC AVIONICS CORPORATION
Enhanced Cell Modem
5.3 Digital Inputs and Outputs Characteristics
5.3.1 Ethernet Interface
➢
Frame Format & Protocol:
•
IEEE802.3 Ethernet Specification.
➢
Data Rate:
•
1000Mbits/s.
➢ Data Encoding:
•
Differential Manchester Encoding for 10Base-T.
•
3-level 4b/5b MLT-3 Encoding for 100Base-T.
•
5-level 4 Dimensional PAM-5 Encoding for 1000Base-T.
➢
Transmitter Impedance:
•
100 + 10 Ω, balanced.
➢
Transmitter Voltage Level:
•
Differential + 2.5V minimum for 10Base-T.
•
Differential 3-level + 950mV minimum for 100Base-T.
•
Differential 5-level + 670mV minimum for 1000Base-T.
➢
Receiver Sensitivity:
•
Differential + 200mV minimum.
➢
Feature:
•
Head-of-line blocking prevention, port-based data rate / traffic storm control, port-based VLAN, port
trunking, QoS and Spanning Tree protocol, unicast/multicast addresses filtering, port-based unregistered
multicast filtering.
➢
MAC Address:
•
Ethernet Switch has 8K MAC address entries with automatic learning and aging.
➢
Switch Configuration:
•
The Ethernet switch ports are initialized to disabled (closed) state at power up to prevent Ethernet loop.
•
The switch configuration data can be loaded from both the EEPROM and the host processor.
•
The EEPROM is required to provide switch configuration data in case the host processor does not boot.
•
The EEPROM is accessible from both the Ethernet switch and the host processor.
•
The Ethernet switch remains operational in the event that the host processor fails or does not boot.
➢
PoE Tolerance:
•
The unit Ethernet switch ports are capable of accepting power input from an external device with PoE
capability per IEEE 802.af without damaging its Ethernet ports even though the unit does not have the
PoE feature.
➢
Port Status:
•
The unit provides Ethernet link/activity status indicator. The LED has green color.
➢
Cable Length:
•
Up to 100meters on Cat 5e cable.
PROPRIETARY AND CONFIDENTIAL
PAGE 16 OF 22
ASC-AA8190-01
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