EQCO400T8 Datasheet PDF - Microchip

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EQCO400T8
Microchip

Part Number EQCO400T8
Description UTP Cable Equalizer
Page 24 Pages


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EQCO400T8
EQCO400T8 UTP Cable Equalizer
Features
• Multi-Rate Adaptive Equalization for UTP Cables
up to 500 Mbps
• Supports General 8B/10B Coded Signaling over
UTP
• Supports FireWire IEEE 1394b at S400, S200 and
S100 Data Rates
• Seamless Connection with any IEEE1394b
Compliant PHY
• Internal Termination Resistors for Low External
Discrete Count
• Fully Compatible with Power over Ethernet(1)
• Carrier Detect and Mute Functionality with Direct
Light Emitting Diode Driving Capability
• Single 3.3V Supply
• Low-Power Operation
- 42 mA (140 mW) Active
- 4.25 mA (14 mW) Mute
• 16-pin, 0.65 mm Pin Pitch, 4 mm QFN Package
• Pb-free and RoHS Compliant
General Description
The EQCO400T8 is a multi-rate adaptive cable equal-
izer designed to restore signals received over Cat 5 or
Cat 6 Unshielded Twisted Pair (UTP) cable. For correct
operation, the signals must be NRZ (Non-Return-to-
Zero) encoded, DC-balanced with a maximum run
length of 10 bits and have a speed (edge rate) of
between 100 Mbps and 500 Mbps.
Typical Equalization Performance
Device
Bit Rate
(8B/10B Coding)
1394 Data Rate
Cat 5e
Range(2) using
Cat 6
EQCO400T8
125 Mbps
S100
0m-85m
0m-85m
250 Mbps
S200
0m-75m
0m-85m
500 Mbps
S400
0m-50m
0m-75m
Note 1: IEEE 802.3-2008, clause 33 - "Power over Ethernet" (formerly known as IEEE 802.3af)
2: Measured on UTP pairs 1, 2, 3 and 6 as per IEEE 1394-2008 using recommended Coilcraft magnetics as
per Table 2-1.
2006-2016 Microchip Technology Inc.
DS60001310B-page 1



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EQCO400T8
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 3
2.0 Application Information ................................................................................................................................................................. 9
3.0 Electrical Characteristics ............................................................................................................................................................ 11
4.0 Packaging................................................................................................................................................................................... 13
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DS60001310B-page 2
2006-2016 Microchip Technology Inc.



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EQCO400T8
1.0 DEVICE OVERVIEW
The EQCO400T8 is ideally suited for long-haul IEEE
1394b-2002 connections over Category 5 or Category
6 Ethernet cable at the S400 data rate. It can also be
used at S200 and S100 data rates over even longer
cables, as illustrated in the typical long-haul connection
in Figure 1-1. The EQCO400T8 connects seamlessly
to any IEEE 1394b-2002 compliant physical layer
controller (PHY).
The achievable connection reach with the
EQCO400T8 depends on the input jitter tolerance of
the IEEE 1394 PHY and the quality of the connectors
and cables used. Figure 1-1 shows the typical
performance with CAT5e and CAT6 cables under
nominal conditions.
FIGURE 1-1:
LONG-HAUL IEEE 1394B-2002, IEEE 1394-2008 CONNECTION
IEEE
1394b
Compliant
PHY
EQCO400T
Up to 100 meters
CAT5/CAT6
UTP
EQCO400T
IEEE
1394b
Compliant
PHY
2006-2016 Microchip Technology Inc.
DS60001310B-page 3



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EQCO400T8
FIGURE 1-2:
EQCO400T8 PIN DIAGRAM (VIEWED FROM TOP)
NC NC NC GND
16 15 14 13
SDIp 1
12 SDOp
VCC 2
SDIn 3
NC 4
EQCO
400T.8
GND TAB
11 VCC
10 SDOn
9 NC
5678
GND CLI LED NC
TABLE 1-1: EQCO400T8 PIN DESCRIPTIONS
Pin Number
Pin Name
Signal Type
Description
2, 11
5, 13
1, 3
12, 10
6
VCC
GND
SDIp/SDIn
SDOp/SDOn
CLI
Power
Power
LVDS Input
LVDS Output
Analog Output
7 LED Output
4, 8, 9, 14, 15, 16 NC
Connect to +3.3V power supply.
Connect to power supply ground.
Differential serial data input pair.
Differential serial data output pair.
Cable length indicator:
Analog voltage can be used to indicate the length of the cable
being equalized; this gives an indication of the amount of
equalization being applied. A higher output voltage results
from more compensation being used to recover the signal.
Leave unconnected when not used.
Carrier detect with light emitting diode driver.
High means a valid input signal, and SDOp/SDOn are turned on.
Low means no RX signal or the signal is too low, and SDOp/
SDOn are muted.
This pin can source up to 3 mA to directly drive an LED.
Leave unconnected when not in use.
Leave unconnected.
DS60001310B-page 4
2006-2016 Microchip Technology Inc.



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