KSZ9021GNI

MICREL SEMICONDUCTOR  KSZ9021GNI  以太网控制器, 1000 Mbps, IEEE 802.3, 3.135 V, 3.465 V, QFN, 64 引脚

The is a completely integrated triple speed 10Base-T/100Base-TX/1000Base-T Ethernet Physical-layer Transceiver for transmission and reception of data on standard CAT-5 unshielded twisted pair UTP cable. It provides the industry standard GMII/MII gigabit media independent interface / media independent interface for connection to GMII/MII MACs in gigabit Ethernet processors and switches for data transfer at 1000Mbps or 10/100Mbps speed. It reduces board cost and simplifies board layout by using on-chip termination resistors for the four differential pairs and by integrating a LDO controller to drive a low cost MOSFET to supply the 1.2V core. It provides diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment. Parametric NAND tree support enables fault detection between KSZ9021 I/Os and board. LinkMD® TDR-based cable diagnostics permit identification of faulty copper cabling.

.

On-chip termination resistors for the differential pairs

.

125MHz Reference clock output

.

Programmable LED outputs for link, activity and speed

.

Baseline wander correction

.

LinkMD® TDR-based cable diagnostics for identification of faulty copper cabling

.

Parametric NAND Tree support for fault detection between chip I/Os and board

.

Loopback modes for diagnostics

.

Automatic MDI/MDI-X crossover for detection and correction of pair swap at all speeds of operation

.

Power down and power saving modes