: Enabling high-port-count 100G, 200G, and 400G configurations in cloud environments. Hyperscale Connectivity
Latency is critical for AI training (which uses GPUs over PCIe) and NVMe storage.
: it converts 8 lanes of 56 Gb/s PAM-4 data into 16 lanes of 25 Gb/s NRZ data. Backward Compatibility bcm81724
The BCM81724 is a low-power, 800G PAM-4 PHY device designed by Broadcom. It serves as a for optical modules. Its primary function is to bridge the gap between high-speed ASIC SerDes (typically running at 50G or 100G per lane) and optical transceivers (like QSFP-DD and OSFP). It is a cornerstone device for enabling 800G switch ports and disaggregated compute fabrics.
A single Intel Xeon or AMD EPYC CPU has a limited number of PCIe lanes (typically 128-160 lanes). Backward Compatibility The BCM81724 is a low-power, 800G
The BCM81724 serves as a critical translation layer for bandwidth upgrades:
For hardware engineers considering the BCM81724, here are practical implementation considerations. It is a cornerstone device for enabling 800G
signaling) to communicate with the massive existing ecosystem of optical modules. Conversion
The is a high-performance, single-chip 400GbE physical layer (PHY) transceiver designed to serve as a critical connectivity bridge in hyperscale data centers and cloud networks . Operating primarily as an 8 × 56 Gb/s PAM-4 to 16 × 25 Gb/s NRZ reverse gearbox , the chip enables next-generation network switches to maintain complete backwards compatibility with legacy network infrastructure.
In modern AI clusters (e.g., NVIDIA DGX H100/GH200), the BCM81724 is found inside modules or "Optical Breakout" cables. It allows: