DA82562ET Intel, DA82562ET Datasheet - Page 13

• Manufacturer Part Number: DA82562ET
• Manufacturer: Intel

Specifications of DA82562ET

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.45V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Not Compliant

4.0
4.1
4.1.1
4.1.1.1
Datasheet
Figure 3. 82562ET 10/100 Mbps Ethernet Solution
Table 2. 4B/5B Encoder
Physical Layer Interface Functionality
The 82562ET is designed to work in Data Terminating Equipment (DTE) mode only. It supports a
direct glueless interface to all components that comply with the LAN Connect specification. The
following figure shows how the 82562ET PLC can be used in a 10/100 Mbps Ethernet switch
design.
100BASE-TX Mode
100BASE-TX Transmit Blocks
The transmit subsection of the 82562ET accepts 3 bit wide data from the LAN Connect unit.
Another subsection passes data unconditionally to the 4B/5B encoder.
The 4B/5B encoder accepts nibble-wide data (4 bits) from the CSMA unit and compiles it into 5-
bit-wide parallel symbols. These symbols are scrambled and serialized into a 125 Mbps bit stream,
converted by the analog transmit driver into a MLT-3 waveform format, and transmitted onto the
Unshielded Twisted Pair (UTP) or Shielded Twisted Pair (STP) wire.
100BASE-TX 4B/5B Encoder
The 4B/5B encoder complies with the IEEE 802.3u 100BASE-TX standard. Four bits are encoded
according to the transmit 4B/5B lookup table. The lookup table matches a 5-bit code to each 4-bit
code. The table below illustrates the 4B/5B encoding scheme associated with the given symbol.
Symbol
0
1
2
3
4
5
System Bus Interface
I/O Control Hub 2
(ICH2) LAN
5B Symbol Code
Controller
01001
10100
10101
01010
01011
11110
4B Nibble Code
(LAN Connect
82562ET
Device)
0000
0001
0010
0100
0101
0011
Magnetics
Networking Silicon — 82562ET
Transmit Differential Pair
(TDP/TDN)
Receive Differential Pair
(RDP/RDN)
9