VSC8658XHJ - Octal Gigabit Ethernet PHY | Microchip
MPN: VSC8658XHJ ✓ Hoạt độngVSC8658XHJ Tóm tắt
An Ethernet transceiver combines physical-layer and interface functions within an Ethernet communication system. The physical layer converts logical data into electrical or optical signaling, while the associated SerDes interface transfers data between parallel PHY functions and a network processor or switch ASIC. VSC8658XHJ belongs to the transceiver hierarchy that supports copper and fiber media in a single multiport design.
The principal feature set includes eight Gigabit Ethernet channels, support for 10/100/1000BASE-T copper operation, 100BASEFX and 1000BASE-X fiber operation, and two 1.25 G SerDes interfaces. This combination allows one transceiver to support both electrical and optical network ports, reducing the number of external physical-layer devices in suitable switch, router, and industrial networking designs.
The VSC8658 architecture integrates eight Gigabit Ethernet PHYs with dual SerDes connectivity in one compact ball grid array package. Integration can simplify board partitioning by bringing copper and fiber media interfaces into one device. The 27 x 27 mm 444-BGA format nevertheless requires careful escape routing, power-plane planning, high-speed return-path management, and thermal verification during PCB implementation.
Typical uses include multiport switches, routers, aggregation equipment, and industrial Ethernet systems. A copper-focused design can use the 10/100/1000BASE-T channels directly, while a fiber uplink can use 100BASEFX or 1000BASE-X through the integrated SerDes path. Network processors and switching ASICs require compatible link interfaces, clocking, and reference circuitry to operate with the PHY correctly.
For PCB design, follow the manufacturer’s package, reference-design, layout, and decoupling instructions rather than routing high-speed links from general package conventions. Ball-grid-array escape routing, power delivery, thermal management, and high-speed SerDes return paths require constraint-driven layout and measurement-based verification.
This page organizes the identified device capabilities with application guidance, engineering considerations, a parameter comparison framework, and sourcing information. It distinguishes the VSC8658 family-level functions from the exact XHJ ordering code and helps designers confirm package, media, lifecycle, and procurement requirements before schematic capture.
Bộ thay thế dễ dàng lắp đặt cho VSC8658XHJ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếVSC8658XHJ Thông số kỹ thuật
| Ethernet Port Count | 8 ports |
| Copper Ethernet Standards | 10/100/1000BASE-T |
| Fiber Ethernet Standards | 100BASEFX/1000BASE-X |
| SerDes Interface Count | 2 interfaces |
| SerDes Data Rate | 1.25 Gbit/s per interface |
| Device Type | Octal Gigabit Ethernet transceiver |
| Architecture | Low-power octal Gigabit Ethernet architecture |
| Hộp | 444-BGA, 27 x 27 mm |
| Kiểu lắp đặt | Surface-mount ball grid array |
| Maximum Data Rate per Ethernet Port | 1 Gbit/s |
Hướng dẫn cấu hình chân VSC8658XHJ 444-bga, 27 x 27 mm
Cấu hình chân cho VSC8658XHJ (444-bga, 27 x 27 mm gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho VSC8658XHJ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
VSC8658XHJ phù hợp cho 6 Áp dụngs: Multiport Gigabit Ethernet Switch, Router with Copper and Fiber Uplinks, Ethernet Aggregation Equipment, Industrial Ethernet Gateway, Network Processor Access Platform, Secure Network Appliance.
Multiport Gigabit Ethernet Switch
The VSC8658XHJ fits an eight-port access switch because it combines eight 10/100/1000BASE-T channels in one 444-BGA device while retaining 100BASEFX and 1000BASE-X connectivity through two 1.25 Gbit/s SerDes interfaces. This arrangement can reduce PHY component count compared with eight separate copper transceivers. The switching ASIC must support the device’s electrical interface and configuration method, while the PCB must provide clean power delivery and controlled routing for all copper and SerDes channels.
Được đề xuất
Router with Copper and Fiber Uplinks
For a router requiring eight copper LAN ports and high-speed uplink flexibility, the VSC8658XHJ provides 10/100/1000BASE-T access ports plus 100BASEFX/1000BASE-X-capable SerDes connectivity. The dual 1.25 Gbit/s SerDes interfaces allow the network processor or switch ASIC to connect through the manufacturer-supported architecture. Designers should validate media compatibility, lane assignment, reference clocks, and recovery behavior against the complete system requirements before finalizing the interface.
Được đề xuất
Ethernet Aggregation Equipment
The VSC8658XHJ is suitable for aggregation equipment that combines multiple copper access ports with optical uplinks. Eight 10/100/1000BASE-T PHYs provide local connectivity, while two 1.25 Gbit/s SerDes interfaces support 100BASEFX or 1000BASE-X media. This can simplify a mixed-media chassis, but system architects must account for the BGA package’s routing complexity, thermal concentration, synchronization requirements, and compatibility with the aggregation ASIC’s host-side interface.
Được đề xuất
Industrial Ethernet Gateway
A gateway can use the VSC8658XHJ to consolidate eight copper Ethernet connections and optional fiber links into a single physical-layer device. The mixed 10/100/1000BASE-T and 100BASEFX/1000BASE-X capability is useful where field equipment uses copper while backbone links use fiber. Before using it in industrial environments, verify the exact temperature grade, lifecycle commitment, EMC design requirements, isolation strategy, and regulatory constraints rather than assuming general industrial qualification.
Được đề xuất
Network Processor Access Platform
The VSC8658XHJ can serve as the physical-layer access device in a network processor platform requiring eight copper ports and high-speed SerDes connectivity. Its two integrated 1.25 Gbit/s SerDes interfaces permit a supported host or switching architecture to combine copper PHY functions with fiber links. Interface selection must account for data format, reference-clock sourcing, latency, error handling, configuration registers, and any required clock or data recovery features documented by Microchip.
Được đề xuất
Secure Network Appliance
The VSC8658XHJ is appropriate for a network appliance that needs multiple Ethernet service ports plus optical uplink options. Eight copper channels provide local access, and the fiber-capable SerDes interfaces offer deployment flexibility for longer backbone links. Power budgeting, thermal analysis, secure boot support, and interface isolation are system-level responsibilities; the PHY selection should be validated against the appliance processor, switching fabric, clocking plan, and environmental test requirements.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho VSC8658XHJ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này |
|---|---|
| Brand | Microchip Technology |
| Package | 444-BGA (27 x 27 mm) |
| Ethernet Port Count | 8 ports |
| Copper Ethernet Support | 10/100/1000BASE-T |
| Fiber Ethernet Support | 100BASEFX/1000BASE-X |
| SerDes Interface Count | 2 interfaces |
| SerDes Data Rate | 1.25 Gbit/s per interface |
| Maximum Ethernet Rate | 1 Gbit/s per port |
| Device Classification | Octal Gigabit Ethernet transceiver |
Bảo phân biệt quan trọng
- Eight copper Ethernet channels in one package (vsDP83867IRRGZR)
- Copper and fiber media in one transceiver (vsDP83867IRRGZR)
- Integrated dual high-speed SerDes connectivity (vsKSZ9897RTXI)
Ghi chú thiết kế
Treat the 444-BGA land pattern as a constraint-driven layout rather than a conventional two-layer breakout problem. Follow the manufacturer’s ball map and reference layout for escape routing, maintain continuous ground references beneath high-speed paths, and keep input, output, and power-return routes as short as practical. Confirm drill, pad, solder-mask, and paste details against the current package drawing because an incorrect generic BGA footprint can create open or shorted connections across hundreds of balls.
Plan separate clean distribution for the PHY, SerDes, clock, and digital interface domains if the manufacturer recommends it. Place required bypass and bulk-decoupling capacitors at their specified locations, preserve low-impedance return paths, and use stitching vias to connect plane layers. Because exact rail voltages, capacitor values, tolerances, and sequencing requirements are not available in the product summary, obtain those values from the manufacturer datasheet before releasing the power network.
Design the two 1.25 Gbit/s SerDes links with controlled impedance, continuous reference planes, minimal stubs, and symmetrical routing where practical. Avoid placing test pads, vias, or unrelated copper in the immediate return path unless the manufacturer’s layout guidance permits them. Validate timing and signal integrity with the exact reference clocks, media, PCB stack-up, connectors, magnetics, and optical components used in production rather than relying on a generic channel simulation.
Estimate junction temperature from actual board copper, enclosure airflow, ambient temperature, and the device’s verified power dissipation rather than using package size alone. The VSC8658XHJ integrates eight PHYs and two SerDes interfaces in one 27 x 27 mm BGA, so local thermal spreading and board-level heat removal deserve early review. Use the manufacturer’s thermal model or application guidance and measure a production-intent assembly under worst-case traffic and ambient conditions.
Do not treat the VSC8658 family name as proof that every ordering suffix has identical software, temperature, or lifecycle characteristics. The XHJ code identifies a specific 444-BGA assembly, so confirm its complete orderable configuration, clock and power requirements, exposed-ball connections, programming procedure, and document revision. Also avoid assuming that a different Ethernet PHY with similar headline port counts is a drop-in replacement; ball assignments and host interfaces must match.
Thông tin tuân thủ
The identified product and distributor results do not state specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for the exact VSC8658XHJ ordering code. Confirm these requirements with Microchip using the exact ordering code and applicable regulatory documentation.
