PS8650 - DisplayPort 2.1a MST Hub Controller | Parade Technologies
料号： PS8650 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
PS8650 概述
A DisplayPort MST hub controller is a type of video interface IC that splits a single DisplayPort source stream into multiple independent display outputs. Within the signal-chain hierarchy (MST hub -> DisplayPort controller -> video interface IC -> display semiconductor), it sits between a DP source (GPU, dock SoC, or accessory processor) and one or more DP sinks (monitors or panels), managing link training, lane mapping, and stream routing.
Key features include a DP 2.1a receiver supporting both MST and SST modes across up to 4 lanes at UHBR20 (20 Gbps/lane), DSC v1.2a (Display Stream Compression) decode and pass-through, and conversion of DP 2.1 streams to DP 1.4 outputs. The device can handle up to 12 DP audio/video streams, both compressed and uncompressed, enabling four independent 4K-class displays or high-resolution multi-panel configurations from a single source port.
Technically, the PS8650 performs full link training on the UHBR20 input and re-transmits at rates the downstream sinks support, aggregating up to 12 A/V streams. Its DSC support allows compressed high-resolution streams to be routed or decoded, conserving downstream bandwidth. The four output ports each negotiate independently with attached sinks.
Typical applications include USB-C/DisplayPort docking stations, video wall controllers and display accessories, graphics card multi-output designs, and commercial display products requiring DP 2.1 to DP 1.4 down-conversion.
A key design consideration is signal integrity at 20 Gbps per lane: BGA274 fanout, dielectric selection, and short, impedance-controlled differential traces on the UHBR20 input path are essential; consult Parade layout guidelines for via stitching and reference-plane continuity.
This page synthesizes distributor sourcing data, application context, and practical design notes not found in the manufacturer datasheet.
PS8650 规格参数
| Product Type | DisplayPort 2.1a MST Hub Controller |
| Input Ports | 1x DisplayPort 2.1a |
| Output Ports | 4x DisplayPort |
| Maximum Link Rate | UHBR20 (20 Gbps per lane) |
| Lane Count | Up to 4 lanes |
| Transport Modes | MST and SST |
| DSC Support | DSC v1.2a decode and pass-through |
| Stream Capacity | Up to 12 DP audio/video streams |
| Protocol Conversion | DP 2.1 to DP 1.4 MST conversion |
| Compliance Standard | VESA DisplayPort v2.1a |
| 封装 | BGA274 |
| 安装类型 | Surface Mount (SMT) |
| RoHS 状态 | ROHS compliant (per JLCPCB listing) |
PS8650 bga274 引脚配置指南
PS8650（bga274 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： PS8650.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PS8650 适用于 6 应用s: USB-C / DisplayPort Docking Stations, Graphics Card Multi-Output Design, Video Wall and Digital Signage Controllers, Display Accessories and Adapters, Commercial and Medical Displays, Test and Measurement / Protocol Validation Fixtures.
USB-C / DisplayPort Docking Stations
The PS8650 is purpose-built for docking stations that must fan a single DP 2.1a link out to multiple monitors. Its one-input, four-output architecture supports up to UHBR20 (20 Gbps per lane) on the upstream side and provides DP 2.1 to DP 1.4 conversion so existing DP 1.4 monitors remain fully usable. With MST mode and DSC v1.2a decode/pass-through, a dock can deliver four independent video streams - for example, multi-4K configurations - from a single USB-C/DP connection. The ability to handle up to 12 audio/video streams, both compressed and uncompressed, gives dock designers headroom for future higher-resolution panel bundles. In this role the PS8650 sits downstream of the USB-C DP alternate-mode multiplexer and upstream of the DP connectors, performing link training independently on each output.
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Graphics Card Multi-Output Design
Graphics card designers use the PS8650 to reduce the number of high-speed lane pairs routed from the GPU. Instead of four independent DP links from the GPU, one DP 2.1a UHBR20 link feeds the PS8650, which fans out to four DP output connectors supporting MST and SST modes. Because the device supports DSC v1.2a decode and pass-through at up to 20 Gbps per lane, compressed high-resolution streams can be distributed without exhausting downstream bandwidth, and DP 2.1 to DP 1.4 conversion keeps legacy monitors compatible. Parade explicitly targets graphic card applications with this device. Board-level benefit: fewer GPU PHY lanes consumed, simplified layer stack-up around the GPU, and independent link training per output so mixed-resolution monitor sets train reliably without driver-side workarounds.
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Video Wall and Digital Signage Controllers
Video wall controllers and digital signage players benefit from the PS8650's ability to deliver up to 12 concurrent DP audio/video streams across four output ports. A single high-bandwidth DP 2.1a feed - up to 80 Gbps aggregate at UHBR20 - can be split into multiple panel feeds, with DSC v1.2a compression preserving resolution headroom for tightly tiled 4K-class displays. DP 2.1 to DP 1.4 MST conversion means commercial displays already installed with DP 1.4 receivers can be driven without replacement. For signage applications requiring synchronized multi-panel content, the hub's independent per-port link training allows different panel models and resolutions to coexist on one installation. The BGA274 package suits the dense multilayer PCBs typical of professional video distribution hardware.
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Display Accessories and Adapters
DisplayPort accessory products - MST hubs, multi-monitor adapters, and DP daisy-chain splitters - are a core target market named by Parade for the PS8650. The device's one-input/four-output topology directly implements the accessory function: a host DP 2.1a port connects to the hub input, and four DP receptacles are driven from the output ports. Support for both MST and SST modes lets the accessory expose either one stretched desktop or four independent displays to the operating system. DSC v1.2a decode/pass-through maintains high refresh rates on modern monitors while the DP 2.1 to DP 1.4 conversion path guarantees compatibility with the large installed base of DP 1.4 displays. For compact accessory form factors, the single-chip hub reduces BOM compared with discrete retimer plus switch combinations.
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Commercial and Medical Displays
High-resolution commercial and medical displays integrate the PS8650 when a monitor must accept one DP 2.1a input and internally distribute streams to multiple timing controllers or panel subsystems. The UHBR20 receiver (20 Gbps per lane, 4 lanes) accommodates the extreme pixel bandwidth of diagnostic-grade and reference monitors, while DSC v1.2a support allows compressed sources to be handled without visible quality loss. In multi-panel display products - stacked or tiled medical review stations, broadcast reference walls - the hub's 12-stream capacity and independent per-port training simplify system architecture. Because Parade lists display applications explicitly among target markets, firmware and compliance support for display-side implementations is available from the manufacturer, shortening qualification cycles for regulated-display designs.
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Test and Measurement / Protocol Validation Fixtures
DisplayPort 2.1 protocol analyzers, compliance-test fixtures, and ATE fixtures use MST hub controllers such as the PS8650 to replicate and route UHBR20 streams to multiple instruments or device-under-test ports. The part's VESA DisplayPort v2.1a compliance and UHBR20 (20 Gbps/lane) receiver make it a reference-grade fan-out element for validating DP 2.1 sources, and its DSC v1.2a decode/pass-through lets test systems exercise both compressed and uncompressed link states. DP 2.1 to DP 1.4 conversion is valuable in mixed-legacy labs where UHBR sources must be characterized against DP 1.4 sinks. In bench fixtures, designers pair the hub with redrivers/retimers to restore signal integrity across cabling and connector losses inherent in instrumentation setups.
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推荐产品汇总
工程参考数据： PS8650 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | BGA274 |
| Brand | Parade Technologies |
| Input Ports | 1x DP 2.1a |
| Output Ports | 4x DP |
| Max Link Rate | UHBR20 (20 Gbps/lane) |
| Transport Modes | MST and SST |
| DSC Support | DSC v1.2a decode and pass-through |
| Max Streams | 12 A/V streams |
关键差异点
- True DP 2.1a UHBR20 MST hub function （对比 PS8353)
- One-to-four fan-out versus two-to-one mux （对比 PS8481)
- Forward compatibility with legacy displays （对比 DP 1.4 MST hubs)
设计说明
The PS8650 input operates at UHBR20 (20 Gbps per lane), where channel loss and reflection budgets are tight. Estimated guidance: keep the AC-coupled differential input traces short (target under ~75 mm), use 100-ohm differential impedance, minimize layer transitions, and maintain unbroken reference planes beneath each lane pair. Length-match intra-pair skew tightly and avoid test-point stubs on UHBR20 lanes. Validate the full channel with S-parameter simulation and eye-diagram analysis before committing the PCB stack-up. Follow the Parade Technologies layout guidelines in the official datasheet for BGA274 breakout recommendations.
The BGA274 package requires a dense multilayer breakout; typical implementations use at least 8-10 layers with dedicated ground planes adjacent to each high-speed signaling layer. Plan the ball fanout so the four output port lane groups exit the BGA field without crossing each other, and reserve solid copper under the package for power integrity. Estimated guidance: decouple each supply ball per the Parade datasheet recommendation with a mix of 100 nF and 10 uF ceramics placed within 2 mm of the balls. Verify via-in-pad or dog-bone breakout strategies against your fabricator's capabilities before routing UHBR20 lanes.
Do not assume downstream DP 1.4 sinks can accept UHBR20 rates directly - the PS8650 performs DP 2.1 to DP 1.4 conversion, so per-output link training happens at the rate each sink negotiates. A common pitfall is designing the output traces with UHBR20-grade budgets when they will only carry HBR3 (8.1 Gbps), adding unnecessary cost; conversely, do not shortchange the input path, which genuinely runs at 20 Gbps/lane. Confirm DSC pass-through versus decode behavior against your target monitor set early in firmware bring-up, and source the device only through authorized Parade channels given the recent launch date.
合规信息
JLCPCB listing for PS8650BGA274G-B0 states 'BGA274 SMT ROHS'. VESA DisplayPort v2.1a compliance per manufacturer. Other certifications not stated in verified data.
