DS320PR822数据手册TI中文资料规格书

描述 Description

The DS320PR 822 is a low-power high-performance linear repeater or redriver designed to support PCIe 5.0, CXL 2.0, UPI 2.0, and other interfaces up to 32 Gbps. The DS320PR 822 provides four 2x2 cross-point mux functionality.

The DS320PR 822 receivers deploy continuous time linear equalizers (CTLE) to provide a programmable high-frequency boost. The equalizer can open an input eye that is completely closed due to inter-symbol interference (ISI) induced by an interconnect medium, such as PCB traces. The CTLE receiver is followed by a linear output driver. The linear data-paths of DS320PR 822 preserve transmit preset signal characteristics. The linear redriver becomes part of the passive channel that as a whole get link trained for best transmit and receive equalization settings. This transparency in the link training protocol results in best electrical link and lowest possible latency. Low channel-channel cross-talk, low additive jitter and excellent return loss makes the device almost a passive element in the link, but with its useful equalization. The data-path of the device uses an internally regulated power rail that provides high immunity to any supply noise on the board.

The device also has low AC and DC gain variation providing consistent equalization in high volume platform deployment.

特性 Features

• Linear redriver supporting PCIe 5.0, CXL 2.0, UPI 2.0 up to 32 Gbps
• Supports most ac coupled interfaces including DP, SAS, SATA, XFI
• Provides four 2x2 Crosspoint mux function
• CTLE boosts up to 22 dB at 16 GHz
• Ultra-low latency of 100 ps
• Low additive random jitter of 75 fs for PRBS data
• Excellent return loss of −10 dB at 16 GHz
• Single 3.3 V supply
• Internal voltage regulator provides immunity to supply noise
• Low active power of 160 mW per channel
• No heat sink required
• Pin-strap, SMBus or EEPROM programming
• Automatic receiver detection for PCIe use cases
• Protocol agnostic linear redriver allows seamless support for PCIe link training
• Support for x2, x4, x8, x16, x24 bus width with one or multiple DS320PR 822
• Temperature range of –40 °C to 85 °C
• 5.5 mm × 10 mm, 64 pin WQFN package