VSC8228XRC-01 - Dual 4.25G Retimer | Microchip
MPN： VSC8228XRC-01 ✓ 啟用中VSC8228XRC-01 概覽
A clock and data recovery IC, or CDR, extracts timing information from a corrupted or degraded serial stream and reconstructs a clean data and clock output. Within the hierarchy of integrated circuits, a CDR belongs to the Clock & Timing and Interface IC families, supporting reliable data transfer when transmitted signals experience attenuation, jitter, or noise. The VSC8228 is designed for Fibre Channel, Gigabit Ethernet, SONET/SDH, and InfiniBand system interconnect.
The primary features of the VSC8228XRC-01 include two retiming ports, support for data rates up to 4.25 Gbps, operation from a minimum rate of 125 Mbps, and two independent clock recovery units. Its dual-channel architecture allows a single device to condition two serial links, reducing component count and simplifying board-level clock distribution. The 64-TQFP surface-mount package also supports compact backplane and communications equipment layouts.
Technically, the FibreTimer architecture separates clock recovery from ordinary signal buffering and performs bidirectional signal conditioning. This is particularly useful when loss, skew, or accumulated jitter would compromise a high-speed point-to-point link. A single reference clock can be used for acquisition, allowing the two recovered channels to share a coherent timing reference. Confirm the required reference-clock topology, operating mode, and channel configuration against the Microchip VSC8228 documentation before laying out the PCB.
Typical uses include Fibre Channel links, Gigabit Ethernet backplanes, SONET/SDH equipment, and InfiniBand interconnects. The device is also appropriate for proprietary serial backplanes operating at or below 4.25 Gbps where recovered clock and data outputs are required at both ends of a link.
PCB implementation should prioritize short, controlled-impedance traces, solid reference planes, and symmetric routing between the transmit and receive channels. Place clock-generation and decoupling networks close to their associated device pins, and follow the manufacturer’s recommended termination and layout guidance to minimize signal-integrity degradation.
This page combines the manufacturer’s device description with application-focused engineering guidance, package information, sourcing questions, and selection criteria that help engineers determine whether the VSC8228XRC-01 fits a high-speed recovery or retiming requirement.
直接替換替代品，適用於 VSC8228XRC-01 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品VSC8228XRC-01 規格
| Product Type | Dual clock and data recovery retimer |
| Maximum Data Rate | 4.25 Gbps |
| Minimum Data Rate | 125 Mbps |
| Number of Ports | 2 ports |
| 輸出數量 | 2 outputs |
| Clock Recovery Units | 2 FibreTimer CRUs |
| Supported Protocols | Fibre Channel, Gigabit Ethernet, SONET/SDH, and InfiniBand |
| Signal Conditioning | Bidirectional |
| Reference Clock | Single reference clock for acquisition |
| Package Type | 64-TQFP |
| Package Dimensions | 10 mm x 10 mm |
| 安裝類型 | Surface mount |
| Channel Count | 2 channels |
VSC8228XRC-01 10 mm x 10 mm 腳位配置指南
VSC8228XRC-01（10 mm x 10 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： VSC8228XRC-01.
請參閱 資料表 以查看完整腳位配置。
典型應用
VSC8228XRC-01 適用於 6 應用s: Fibre Channel Backplane Conditioning, Gigabit Ethernet Link Retiming, SONET and SDH Equipment, InfiniBand Interconnect, High-Speed Server Interconnect, Industrial Serial Backplane.
Fibre Channel Backplane Conditioning
The VSC8228XRC-01 fits Fibre Channel backplane links that require recovered clock and data outputs instead of relying on degraded source-synchronous timing. Its dual FibreTimer architecture provides two recovery units, while the supported operating range of 125 Mbps to 4.25 Gbps covers multiple Fibre Channel rates. Place the device near the link endpoint so recovered outputs remain short and preserve timing margin. Bidirectional conditioning also allows one package to serve both communication directions. Final channel length, loss, skew, and protocol margin must be validated against the manufacturer’s application guidance before production release.
推薦
Gigabit Ethernet Link Retiming
The VSC8228XRC-01 is suitable for Gigabit Ethernet paths where connector or backplane transitions introduce timing degradation and the system needs locally regenerated data and clock signals. Supporting rates through 4.25 Gbps provides headroom above 1 Gb/s while the two-channel arrangement can condition two links. The device should operate in the mode and reference-clock configuration specified for the target Ethernet physical layer. Validate receiver sensitivity, equalization requirements, and recovered-clock jitter against the system mask before releasing the board.
推薦
SONET and SDH Equipment
The VSC8228XRC-01 supports SONET/SDH system-interconnect applications where a clean timing reference is needed after transmission through a lossy path. Its clock recovery units can regenerate timing for serial links operating within the documented 125 Mbps to 4.25 Gbps range, and the dual-channel design can address two recovery functions in one 64-TQFP device. Engineers should match the exact line rate, reference frequency, and jitter tolerance to the relevant equipment specification. Maintain controlled impedance and symmetric channel geometry to prevent the retimer from compensating for uncontrolled board-level skew.
推薦
InfiniBand Interconnect
The VSC8228XRC-01 is applicable to InfiniBand and similar high-speed serial backplanes where endpoint receivers need recovered timing after connector or PCB losses. The maximum supported rate of 4.25 Gbps and dual-port architecture allow two channels to be conditioned in a compact 10 mm by 10 mm package. Use the manufacturer’s reference-clock and operating-mode guidance to configure the FibreTimer recovery units, then verify lane-by-lane eye margin and jitter. Short matched routes, continuous reference planes, and correct termination are essential because retiming cannot repair an incorrectly designed channel.
推薦
High-Speed Server Interconnect
The VSC8228XRC-01 can support server and storage interconnect sections that require local timing recovery across a passive backplane or cable connection. Two recovered channels share one reference-clock acquisition arrangement, helping simplify synchronization in systems with multiple high-speed links. The 4.25 Gbps ceiling defines the usable envelope, so higher-rate server fabrics require a different retimer. Before schematic capture, confirm protocol transparency, reference-clock stability, reset behavior, and channel-loss limits. Preserve symmetry between each transmit and receive path to minimize recovery latency imbalance.
推薦
Industrial Serial Backplane
The VSC8228XRC-01 fits industrial control and test systems with long, connector-heavy serial paths that would otherwise suffer accumulated skew or timing drift. Its two clock recovery units allow bidirectional condition on a pair of links, while support for rates from 125 Mbps to 4.25 Gbps accommodates multiple industrial serial architectures. Configure the reference clock and operating mode according to the target protocol, and test operation across temperature and the full range of cable or board losses. Keep power and ground distribution quiet because supply disturbance can degrade recovered timing even when the data channel itself is within budget.
推薦
推薦產品摘要
工程參考資料，適用於 VSC8228XRC-01 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Brand | Microchip Technology |
| Package | 64-TQFP (10 mm x 10 mm) |
| Product Type | Dual clock and data recovery retimer |
| Maximum Data Rate | 4.25 Gbps |
| Minimum Data Rate | 125 Mbps |
| Port Count | 2 ports |
| Output Count | 2 outputs |
| Clock Recovery Units | 2 FibreTimer CRUs |
| Signal Direction | Bidirectional signal conditioning |
| Supported Applications | Fibre Channel, Gigabit Ethernet, SONET/SDH, and InfiniBand |
主要差異化特點
- Dual FibreTimer recovery in one package (對比Single-channel clock-buffer or retimer implementations)
- Broad rate range within one device (對比Single-rate retimer families)
- Purpose-built multi-protocol support (對比General-purpose signal buffers)
- Compact surface-mount implementation (對比Larger through-hole retimer packages)
設計說明
Route each high-speed channel as a controlled-impedance transmission line with continuous reference planes and minimal stubs. Keep the recovered data and clock outputs short, preserve symmetry between transmit and receive paths, and place the VSC8228XRC-01 near the link endpoint that requires timing recovery. Consult the Microchip reference-circuit and layout guidance for the exact termination, component placement, and reference-clock connection arrangement.
Treat the reference clock and recovered-clock routing as controlled-impedance nets, and keep the clock source physically close to the acquisition circuitry. Avoid routing high-speed data beneath unrelated noisy or discontinuous reference planes. Validate insertion loss, return loss, skew, and jitter at every connector and transition because the retimer can recover timing only within the documented channel and operating-mode limits.
Decouple the device locally and follow the manufacturer’s recommended capacitor placement and values. Separate clock and data return paths from noisy power switching loops, and provide a stable reference clock because acquisition quality directly affects recovered timing. Review the supply-voltage tolerance and power-consumption limits in the Microchip datasheet before finalizing the power tree and thermal design.
Do not treat the VSC8228 base-family description as proof that an arbitrary competing retimer is interchangeable. A valid replacement must reproduce the 64-TQFP footprint, pin functions, dual recovery architecture, supported rate range, and protocol-specific behavior. Likewise, do not enable a retimer simply because a link is slow; configure the device for the intended line rate, reference clock, and recovery mode to avoid inconsistent system timing.
合規資訊
Compliance attributes are not stated on the manufacturer product page or listing excerpts and require confirmation against the manufacturer’s material declaration or product documentation.
