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2.4 SerDes interface
The LS1046A SerDes block provides eight high-speed serial communication lanes that support a variety of protocols, such as
SATA, XFI, PCIe, SGMII 1G, SGMII 2.5G, and RGMII. The SerDes lanes are partitioned as four lanes for SerDes1 (SD1) and
four lanes for SerDes2 (SD2). See
QorIQ LS1046A Reference Manual
(LS1046ARM) for information on supported SerDes
combinations.
The LS1046A SerDes block supports the following features:
• Supports PCIe (5.0 Gbit/s) with x1 operation, SATA 3.0 (6.0 Gbit/s), SGMII 1G (1.25 Gbit/s), and SGMII 2.5G (3.125 Gbit/s)
• Three PCIe connectors supporting:
— SLOT 1: Mini-PCIe x1
— SLOT 2: Standard PCIe x1
— SLOT 3: Standard PCIe x1
• One SATA 3.0 connector
• One SFP + module with XFI retimer
The following figure shows the SerDes architecture with PCI Express support.
LS1046ARDB Functional Description
QorIQ LS1046A Reference Design Board Reference Manual, Rev. 2, 30 May 2019
24
NXP Semiconductors