Allied Telesis AT-MX400T4 User Manual

AT-MX400T4 10BASE-T/100BASE-T4 T ransceiver

Installation Guide

Overview

The Fast Ethernet and 802.3u Ethernet ports all common Ethernet media with Micro Transceivers for 10 Mb/s thin coax (10BASE2), UTP (10BASE-T) and Fiber Optic (10BASE-FL, FOIRL) and 100Mb/s UTP (100BASE-T4, 100BASE-TX) and Fiber Optic (100BASE-FX) LAN systems.

The AT-MX400T4 transceiver provides the media-dependent-interface (MDI) to media-independent-interface (MII) services required of the 100BASE-T4 physicallayer-device (PHY) sublayer. The AT-MX400T4 complies with ANSI/IEEE 802.3 and

802.3u. Direct connection of the AT-MX400T4 to the 40-pin MII connector found on most 100BASE Ethernet stations (DTEs) reduces cabling costs.

Installation

Hot Insertion.

ON. This does not damage the transceiver. Follow these steps:

1. Do not power down the device (DTE) to which you are attaching the

2. Set DIP switches on the transceiver. (See the “PHY Address” section

3. Plug in the transceiver.

4. Reset the DTE. This is necessary to latch in the correct address and

Cold Insertion.

1. Power down the device (DTE) to which you are attaching the

2. Set DIP switches on the transceiver. (See the “PHY Address” section

3. Plug in the transceiver.

4. Power ON.

Micro Transceiver Series of products are direct-attach IEEE 802.3

10 Mb/s and 100Mb/s Data Terminal Equipment (DTE). ATI sup-

The transceiver can be inserted in the MII connector with power

transceiver.

of this guide.)

set up Default Operation Mode.

For Cold insertion (the most common), follow these steps:

transceiver.

of this guide.)

Status Indicators

The AT-MX400T4 shows status by means of LEDs as listed in Table 1.

Table 1: LED Guide

LED Name Meaning When LED Is Illuminated

100 Mb/s Indicates 100 Mbps speed LNK Indicates Link established ACT Indicates transmit or receive Activity (ﬂashes) PWR Indicates Power applied

Half or Full Duplex

At power up, the default operation mode is 100Mb/s half duplex. To set the ATMX400T4 to another operation mode (10 Mb/s full or half duplex), refer to the adapter card or hub manual; the adapter card driver or hub management software accesses the MII Mode Control Register on the AT-MX400T4.

PHY Address

The PHY section of the micro transceiver is always set to an address (typically 1). This address is used locally by the DTE to differentiate multiple PHYs connected to a single MII. Addresses are selected using the Physical Address DIP switch on the front of the transceiver. The address range is 0-1 decimal; the default setting as shipped is address 1.

When the address is set to 0, the transceiver is in Isolation Mode. In Isolation Mode, the transceiver responds only to MDIO and MDC signals and ignores all other MII signals.

NOTE

Auto-Detection

The AT-MX400T4 suppor ts auto-detection. If the other end supports 100Base-T4, the AT-MX400T4 will auto switch to 100mb/s at half duplex. If the other end supports 10Base-T the AT-MX400T4 will auto switch to 10mb/s at half duplex.

Cabling

The AT-MX400T4 uses RJ45 connectors and 4-pair wire of category 3, 4, or 5 unshielded twisted pair (UTP) or type 1 shielded twisted pair (STP). The recommended maximum cable length is 100 meters.

Automatic polarity correction.

straight-through cable to a hub or a crossover cable to another PHY. See Figure 1 for standard wiring to a hub. If the polarity is inverted, the MX400T4 automatically corrects polarity.

Figure 1: Link Segment Wiring

1  2

3  6

4   5

7   8

PHY PHY

The transceiver should be connected with a

TX_D1+   TX_D1-   RX_D2+   RX_D2-   B1_D3+   B1_D3-   B1_D4+   B1_D4-

1  2

3  6

4   5

7   8

Warranty

The AT-MX400T4 transceiver has a lifetime warranty.

Electrical Safety and Installation Requirements

RADIATED ENERGY

U.S. Federal Communications Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Note: Modiﬁcations or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate this equipment. Canadian Department of Communications This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

STANDARDS: This product meets the following standards

RFI EmissionEN55022 Class A

WARNING: In a domestic environment this product may cause radio interference in which case the

user may be required to take adequate measures. Immunity EN50082-1 Electrical Safety EN60950, UL1950, CSA 950

SAFETY LIGHTNING DANGER

DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING ACTIVITY.

Operating temperature

This product is designed for a maximum ambient temperature of 40 degrees C.

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