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Description:

The BCM81381A0KFSBG is a low-power, low-latency PHY that integrates retimer and equalizer functions to support 100Gb Ethernet (GbE), 40GbE, 25GbE, and 10GbE applications.

In 100G mode, the BCM81381 supports two full-duplex 100G ports (CAUI4 to CAUI4) for SR4, LR4 and copper CR4 CFP2 / CFP4 / QSFP2 line card applications.

In 40G mode, the BCM81381 supports two full-duplex 40GbE ports (XLPPI-to-XLAUI) for SR4, LR4, and copper CR4 QSFP + line card applications.

In 25G / 10G mode, the BCM81381 supports 8x25GbE / 10GbE ports for SR, LR, and copper CR/KR applications.

On-chip clock synthesis consists of a low-cost 156.25MHz execution reference clock (for all IEEE standard 10G / 40G / 100G rates) via a high-frequency, low-jitter phase-locked loop (PLL). Individual clock recovery is performed on the device by synchronizing directly with the respective input data streams.

Designed in 28nm CMOS technology, the BCM82381 provides low-power, low-latency solution coupling capacitors with integrated AC for direct connection to Broadcom's switch products. The BCM82381 comes in a 19mm x 19mm, 324-pin BGA, RoHS compliant package.

Features:

- Dual 100GE PHY supports CR4, SR4, and LR4

- Article 92 100G-CR4 Transmission training

- Article 91 100G FEC, bypass

- Article 85 40G-CR4 transmission training

- 25GbE mode, 8 independent 25GBase-CR/SR/KR (per IEEE 802.3by) or 25GBase-CR1 / KR1 (per 25G alliance specification)

- 50GbE mode, 50GBase-KR2 to 50GBase-CR2 / KR2 (per 25G alliance specification)

- Supports a mix of 10GbE and 25GbE operations in each of all eight channels

- Low speed CFP2 / CFP4 / QSFP2 / QSFP + Data I/O

- Low power 16nm CMOS design

- High performance receive balance > 35dB channel loss

- 19x19mm BGA package, 1mm ball pitch

Applications:

• Blade server

• Enterprise LAN switching

• Cable card

• Router

• Server

• Switch

• Overhead switch