# TNETE2004 QuadPHY Datasheet Summary

## Overview
The TNETE2004 is a single-chip, multi-PHY (four 10BASE-T devices) solution for 10BASE-T networking systems. It offers integrated features and requires minimal external components.

## Key Features
️· Four 10BASE-T PHYs: Supports four independent 10BASE-T interfaces.
️· Full/Half Duplex: Supports both full-duplex (20 Mbps aggregate) and half-duplex operation.
️· Auto-Negotiation: Implements IEEE 802.3u auto-negotiation to establish the highest common protocol.
️· Management Interface: MDIO serial interface compliant with IEEE 802.3 MII for network management.
️· Integrated Filters: Eliminates the need for external filters on receive and transmit circuits.
️· Smart Squelch: Reduces noise and improves signal detection.
️· LED Support: Provides direct connection for LED status indicators (Link, Activity, Collision).
️· Loopback & Test Modes: Offers built-in loopback for testing and IEEE 1149.1 JTAG test port.
️· Compatibility Modes: Facilitates connection with third-party MACs.
️· Low Power Consumption: Utilizes CMOS technology and offers a power-down mode.

## Functional Blocks
️· Transmitter
️· Receiver
️· Collision/Signal Quality Error Detection
️· Jabber Detection
️· Auto-Negotiation
️· Management Data Interface
️· Link Test
️· LED Status Indicator
️· Test Port
️· Compatibility Modes

## Interfaces & Signals
️· XMTN/XMTP: Transmit and receive differential pairs
️· TXD/RXD: Transmit and receive data
️· TXCLK/RXCLK: Transmit and receive clock
️· CRS: Carrier Sense
️· COL: Collision Detect
️· LINK: Link Status
️· MDIO/MDCLK: Management Data Interface
️· Power: Various VDD and GND pins for different circuit sections (L, R, T, A).

## Compliance
️· IEEE 802.3 10BASE-T
️· IEEE 802.3u Auto-Negotiation
️· IEEE 1149.1 JTAG Boundary Scan

## Package Options
️· 120-Pin Plastic Quad Flat Package (PBE)
️· 128-Pin Plastic Quad Flat Package (PAC)