BCM84846A1KFSBLG

BCM84846A1KFSBLG is a Broadcom Ethernet PHY (physical-layer transceiver). It provides the copper line interface between an Ethernet MAC and the cable, handling signaling, clocking, link management, and related PHY functions. The A1KFSBLG suffix encodes revision, packaging, and related options; exact electrical characteristics, pinout, and supported speeds depend on the specific revision and package. This device is used in networking equipment such as NICs, switches, and embedded systems. Typical capabilities in the BCM84846 family include support for common Ethernet speeds (10/100/1000 Mbps), auto-negotiation, and low-power modes. For precise specs, references, and pinout, consult the official Broadcom datasheet and product brief for BCM84846A1KFSBLG.

BCM84846A1KFSBLG is Broadcom’s quad-port Ethernet PHY in a BGA package. Key features:
- Four independent 10/100/1000BASE-T PHY ports
- Auto-negotiation with support for full/half duplex on each port
- MAC interfaces: configurable MII/GMII/SGMII/RGMII to host
- IEEE 802.3 10/100/1000BASE-T compliance
- Energy-Efficient Ethernet (EEE) and power-saving modes
- Cable Diagnostics and per-port link/status visibility
- Auto-MDIX and integrated test/loopback features
- RoHS-compliant, Pb-free BGA package (BLG)
Note: For exact electrical specs, pinout, and supported interfaces, refer to the official datasheet.

- Pin count: 256-pin BGA
- Function: Broadcom Ethernet PHY (physical-layer transceiver) for copper Ethernet, supporting 10/100/1000BASE-T with MAC interface (GMII/RGMII) and MDIO management.

- Manufacturer: Broadcom Inc. (Broadcom)
- What kind of company: A global semiconductor company (largely fabless) that designs and sells a wide range of integrated circuits and SoCs for networking, data centers, broadband, wireless, storage, and related technologies.

BCM84846A1KFSBLG is a Broadcom PHY/SerDes device for high‑speed Ethernet interfaces. Typical application areas include:
- Data center and enterprise networking gear (switches, routers, servers, NICs)
- Storage systems and backplanes requiring SerDes links
- Telecom access/aggregation equipment
- Embedded/industrial networking with reliable PHY‑to‑MAC interfaces
In short: used wherever high‑speed Ethernet PHYs and SerDes are needed in networking, storage, telecom, and industrial applications.

Ball Grid Array (BGA) package.