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BCM81724 - 8 x 56 Gb/s PAM-4 to 16 x 25 Gb/s NRZ Forward and Reverse Gearbox

General Description

4 1.1 Reverse, Retimer, and Forward Gearbox Modes 4 1.2 Device Functions 10 1.2.1 Host-Side Interface 11 1.2.2 Line-Side Interface11 1.3 Adaptive Voltage Scaling 12 1.4 Loss of Signal and Signal Detector13 1.5 Reset 14 1.6 Microcode Loading 14 Chapter 2: Ball Assignments and Descriptions 15 2.1 Fu

Key Features

  • Host-side interface: 30 dB (both NRZ and PAM-4 modes).
  • Line-side interface:.
  • 35 dB (NRZ mode).
  • 20 dB (PAM-4 mode).
  • Chip-to-module (C2M) compliant.
  • Forward and Reverse Gearbox mode and Retimer mode.
  • Supports forward error correction (FEC).
  • Supports CR mode in Reverse Gearbox mode.
  • Integrated AC-coupling capacitors on the system-side and line-side receivers.
  • Multiple standard and line rate support for both PAM-4 and NRZ.
  • Continuou.

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Datasheet Details

Part number BCM81724
Manufacturer Broadcom
File Size 586.04 KB
Description 8 x 56 Gb/s PAM-4 to 16 x 25 Gb/s NRZ Forward and Reverse Gearbox
Datasheet download datasheet BCM81724 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Data Sheet BCM81724 8 x 56 Gb/s PAM-4 to 16 x 25 Gb/s NRZ Forward and Reverse Gearbox with 8 x 56 Gb/s PAM-4 Pass-Through Mode PHY Overview The Broadcom® BCM81724 is a single-chip 8 × 56 Gb/s to 16 × 25 Gb/s NRZ forward and reverse gearbox with 8 × 56 Gb/s PAM-4 Pass-Through mode PHY. It supports both the PAM-4 and NRZ data formats. It supports Retimer, Forward, and Reverse Gearbox modes. It also supports 1G, 10G, 25G, 40G, 50G, 100G, 200G, and 400G line-card applications. On-chip clock synthesis is performed by a low-cost 156.25-MHz reference clock through high-frequency, low-jitter phase-locked loops (PLLs). The BCM81724 is fabricated in advanced low-power 16-nm CMOS technology. The BCM81724 is available in a 19 mm × 19 mm, 0.8-mm pitch, 484-ball BGA, RoHS-compliant package.