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JMB321-QGCP0B
JMB321-QGCP0B
| Part Number | JMB321-QGCP0B |
|---|---|
| Manufacturer | JMicron Technology |
| Category | Integrated Circuits (ICs) > Interface ICs – SATA Port Multiplier Controllers |
| Description | Single-chip 1-to-5 SATA II Port Multiplier controller with integrated hot-plug, dual switching modes, native NCQ and ATAPI storage protocol support. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The JMB321-QGCP0B is a single-chip SATA Gen II port multiplier from JMicron, converting one host SATA channel to 5 independent storage ports for NAS, NVR and embedded storage hardware. It supports 3.0Gbps SATA II bandwidth with backward compatibility to SATA 1.5Gbps, featuring both FIS-based and command-based switching to boost multi-drive concurrent IO performance. Integrated PHY transceivers, independent hot-plug control and NCQ hardware acceleration deliver stable multi-disk expansion without host hardware modification. The low-power QFN-64 package fits compact fanless storage equipment with commercial-grade temperature tolerance.
Core Advantages
1-to-5 Multi-Drive Expansion Design
Expands a single SATA host port to connect up to 5 HDD/SSD, saving PCB layout space and reducing system hardware costs.
Dual Switching Modes for High Throughput
Supports FIS-Based Switching for parallel multi-disk data transmission, paired with Command-Based Switching for backward compatibility with legacy SATA controllers.
Independent Per-Port Hot-Plug & NCQ Acceleration
Each target channel supports safe dynamic drive hot swap; built-in NCQ hardware acceleration optimizes random read/write response speed for multi-storage arrays.
Low Power & Compact QFN Packaging
Optimized silicon design cuts leakage current and heat generation, suitable for miniaturized fanless NAS and surveillance storage enclosures.
Key Specifications
| Brand | JMicron Technology Storage Controller Series |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Green Compound Standards Qualified |
| EDA/CAD Model | 3D STEP Models, Schematic symbols, and PCB Land Pattern footprints available upon request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | QFN-64 (10mm × 10mm × 0.8mm) |
| Mounting Type | Surface Mount Technology (SMD/SMT) |
| Standard Packaging Form | Tape & Reel (1000 pieces per reel) |
| Surface Marking / Silkscreen | JMB321 QGCP0B Marking |
| Channel Topology | 1 Host SATA Port to 5 Independent Target SATA Device Ports |
| Interface Generation & Speed | SATA II (3.0 Gbps), Backward Compatible with SATA I 1.5 Gbps |
| Supported Switching Modes | FIS-Based Switching, Command-Based Switching |
| Integrated Hardware PHY | Built-in differential PHY transceivers for host and all 5 target channels |
| Storage Protocol Support | SATA 2.5 Spec, ATAPI Command Routing, Native Command Queuing (NCQ) |
| Per-Port Independent Control | Independent hot-plug detection, power control and fault flag for each storage channel |
| Power Supply Rails | 1.2 V Core Logic Supply, 3.3 V Peripheral I/O Supply |
| I/O Pin Withstand Voltage | 3.6V Maximum Tolerance on I/O Terminals |
| Channel Isolation Protection | Overvoltage, ESD and short-circuit isolation for each target port |
| Power Saving Function | Per-channel power gating, automatic low-power idle mode for inactive drives |
| Operating Temperature Range | 0°C to +70°C / Standard Commercial & Embedded Operating Range |
Typical Applications
- Network-Attached Storage (NAS), Home Private Cloud & Media Server Hardware
- Network Video Recorders (NVR), Multi-Channel Surveillance DVR Storage Arrays
- Industrial Single Board Computers, Embedded Storage Expansion Backplanes
- Multi-Disk External Hard Drive Enclosures, SATA Hardware RAID Towers
- HDD Mass Duplicators, Disk Testing & Validation Test Equipment
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your stock JMB321-QGCP0B 100% original JMicron genuine parts?
A: Yes, all in-stock JMB321-QGCP0B ICs are brand-new original JMicron components. Every batch passes quality inspection and packed in factory standard tape & reel moisture-proof packaging.
Q2: What is the difference between FIS-Based and Command-Based switching?
A: Command-Based switching only accesses one drive sequentially. FIS-Based switching transmits data frames to multiple drives simultaneously, significantly improving multi-disk overall throughput.
Q3: Does the host SATA controller need special drivers to work with this port multiplier?
A: It complies with official SATA 2.5 specifications. The host SATA controller must enable AHCI mode to fully utilize multi-drive concurrent transmission functions.
Q4: How to get datasheets, reference schematics or bulk tier pricing?
A: Fill out the Quick Inquiry form on this page with your required quantity. Our technical sales team will send full technical documents and quotation within 24 hours.
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