KSZ8091RNDCA-TR

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KSZ8091RNDCA-TR

IC TRANSCEIVER FULL 1/1 24QFN

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規格

Supplier Microchip Technology
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type Transceiver
Protocol Ethernet
NumberofDrivers/Receivers 1/1
Duplex Full
Voltage-Supply 1.8V, 2.5V, 3.3V
OperatingTemperature 0°C ~ 70°C
MountingType Surface Mount
Package/Case 24-VFQFN Exposed Pad

概述

Description

KSZ8091RNDCA-TR is a 10/100 Mbps Fast Ethernet PHY transceiver from Microchip (Micrel). It provides the physical layer between an Ethernet MAC core and a copper network (RJ45 with magnetics).
Key points:
- Interfaces: supports MII or RMII to the MAC and MDIO/MDC for management.
- PHY features: auto-negotiation, 10/100 Mbps operation, link/activity indication, and support for basic PHY functions.
- Power/packaging: designed for embedded systems; -TR indicates tape-and-reel packaging for automated assembly (CA variant specifies specific packaging/grade per datasheet).
- Applications: connects a microcontroller/SoC Ethernet MAC to Ethernet networks in embedded designs; commonly used with external magnetics and RJ45.
Note: For exact pinout, voltage, timing, and magnetics recommendations, refer to the KSZ8091RNDCA-TR datasheet and evaluation hardware.

Features

KSZ8091RNDCA-TR is a Microchip/Micrel 10/100 Mbps Ethernet PHY/transceiver. Key features:
- 10/100 Mbps Ethernet PHY with auto-negotiation and speed/duplex detection
- Auto MDI/MDI-X crossover
- Flexible MAC interfaces: supports MII and RMII to MAC
- IEEE 802.3 / 802.3u compliant (10BASE-T/100BASE-TX)
- Full- and half-duplex operation
- LED indicators for Link and Activity
- Low-power modes and power-down support
- RoHS-compliant, Tape-and-Reel (TR) packaging
Note: exact pinout, voltage, and clock requirements depend on the specific package variant.

Package

A 28‑pin leadless QFN package (QFN-28) with an exposed pad; Tape & Reel (TR).

Pinout

- Pin count: 28 pins (QFN package for KSZ8091RNDCA-TR).
- Function: 10/100 Mbps Ethernet PHY (physical layer transceiver) with RMII interface to MAC, includes MDIO/MDC management and LED outputs; requires RMII reference clock input (about 50 MHz) and power/ground pins.

Manufacturer

- Manufacturer: Microchip Technology Inc. (formerly Micrel; KSZ parts originated with Micrel and are now sold under Microchip after the acquisition).
- What kind of company: A global fabless semiconductor company that designs, develops, and markets analog, mixed-signal, microcontroller, and other integrated circuits, including Ethernet PHYs.

Application

KSZ8091RNDCA-TR is a single-port 10/100 Mbps Ethernet PHY. Typical applications:
- Embedded systems and microcontroller-based designs needing an Ethernet PHY (RMII/MII)
- Networked consumer electronics (printers, IP cameras, set-top boxes)
- Industrial automation and M2M equipment
- IoT gateways and edge devices (mini-routers, access points)
- Test/evaluation boards and NIC implementations requiring Ethernet PHY connectivity

Equivalent

Equivalent 10/100 Mbps Ethernet PHYs (MII/RMII) to KSZ8091RNDCA-TR include:
- TI DP83848C
- Microchip LAN8720A
- Microchip LAN8740A / LAN8742A
- Realtek RTL8201N
- Realtek RTL8211 (and RTL8211B)
Note: These are common drop-in PHYs with RMII/MII interfaces used as alternatives to KSZ8091RNDCA-TR. Exact pinout, clocking, and LED behavior should be checked for each part.

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