LAN8810I-AKZE Datasheet, PDF (8/100 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support

GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Chapter 1 Introduction
1.1
General Description
The SMSC LAN8810/LAN8810i is a low-power 10BASE-T/100BASE-TX/1000BASE-T Gigabit Ethernet
physical layer (PHY) transceiver with variable I/O voltage that is fully compliant with the IEEE 802.3
and 802.3ab standards.
The LAN8810/LAN8810i can be configured to communicate with an Ethernet MAC via the standard
MII(IEEE 802.3u)/GMII(IEEE 802.3z) interfaces. It contains a full-duplex transceiver for 1000Mbps
operation on four pairs of category 5 or better balanced twisted pair cable. Per IEEE 802.3-2005
standards, all digital interface pins are tolerant to 3.6V.
The LAN8810/LAN8810i is configurable via hardware and software, supporting both IEEE 802.3-2005
compliant and vendor-specific register functions via SMI. The LAN8810/LAN8810i implements Auto-
Negotiation to automatically determine the best possible speed and duplex mode of operation. HP
Auto-MDIX support allows the use of direct connect or cross-over cables.
An internal block diagram of the LAN8810/LAN8810i is shown in Figure 1.1. A typical system-level
diagram is shown in Figure 1.2.
LEDs
GMII
JTAG
PLL
LEDs
Physical
Coding
Sublayer
TAP
Controller
3
Digital TX ₂
Scrambler
Trellis
1
4DPAM-5 Encoders
0
3
2
1
0
Spectral
Shaper
Digital RX
Descrambler
Viterbi Decoder
4DPAM-5 Decoders
3
3
2
2
1
10
0 ^DSP
3
3
2
2
1
10
Analog
0
TX
3
3
2
2
1
10
Analog
0 RX
3
2
1
0
3
2
1
0
Active
Hybrid
3210
10/100/1000
Ethernet
LAN8810/LAN8810i
Figure 1.1 Internal Block Diagram
Revision 1.0 (02-06-13)
8
DATASHEET
SMSC LAN8810/LAN8810i