ASM1166 - PCIe Gen3 x2 to 6-Port SATA Controller | ASMedia
料号： ASM1166 ✓ 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 |
ASM1166 概述
A SATA host controller is a type of storage interface IC, or disk controller, within the broader family of PCIe bridge and interface controllers used in the storage I/O subsystem of computers and servers. It translates PCI Express transactions into SATA AHCI command traffic, allowing a system with limited native SATA ports to attach many more drives. The AHCI (Advanced Host Controller Interface) standard means the device is recognized natively by modern operating systems without vendor-specific drivers, which is a major advantage for NAS and home-lab builders.
Key features include six independent SATA 6 Gbps ports from a single PCIe Gen3 x2 upstream link (approximately 2 GB/s aggregate bandwidth, shared across ports), support for cascaded port multipliers to expand beyond six physical drives, low power consumption suited to always-on storage systems, and native AHCI 1.3.1-class operation in Linux, Windows, and BSD kernels.
Architecturally, the ASM1166 integrates a PCIe Gen3 PHY and MAC on the upstream side, a packet arbitration engine, and six SATA 3.x PHY/MAC channels downstream. Because the x2 upstream link is the bottleneck (~1.97 GB/s raw), per-port throughput is highest when workloads are spread across disks rather than concentrated on one drive, and sequential multi-drive reads saturate the upstream link.
Typical applications include NAS (Network Attached Storage) builds on Unraid, TrueNAS, and OpenMediaVault, server and high-capacity storage platforms, surveillance and video-recording systems, and adding drive bays to mini-PCs via M.2-to-SATA adapter cards.
Design-wise, route the six SATA differential pairs with controlled impedance (100 ohm differential), keep pairs length-matched, and provide a solid ground reference; the exposed pad must be soldered to ground for thermal and electrical integrity. Firmware is typically flash-resident on an attached SPI ROM, so include the flash on the BOM.
This page synthesizes distributor availability, community-verified comparisons against JMB585 and LSI HBAs, and practical design notes not found in the brief manufacturer datasheet listing.
直接替换替代料： ASM1166 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ASM1166 （相同外形与封装尺寸） ——差异在于 Package, Port Multiplier Support, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料ASM1166 规格参数
| Product Type | SATA host controller (AHCI) |
| Upstream Interface | PCIe Gen3 x2 |
| Downstream Ports | 6 x SATA Gen3 (6 Gbps) |
| Protocol | AHCI |
| Port Multiplier Support | Yes (cascaded port multipliers) |
| Aggregate Upstream Bandwidth | Approx. 2 GB/s (PCIe Gen3 x2 raw) |
| 封装 | QFN-88, 10 x 10 mm |
| 安装类型 | Surface Mount |
| RoHS 状态 | RoHS compliant (per JLCPCB listing) |
| Latency Characteristic | Low latency |
| Power Characteristic | Low power |
ASM1166 qfn-88, 10 x 10 mm 引脚配置指南
ASM1166（qfn-88, 10 x 10 mm 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： ASM1166.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ASM1166 适用于 6 应用s: NAS (Network Attached Storage) Builds, Surveillance and Video Recording Platforms, Server and High-Capacity Storage Systems, M.2 to SATA Adapter Cards, Desktop Storage Expansion and Home Labs, Backup and Archive Appliances.
NAS (Network Attached Storage) Builds
The ASM1166 is the de facto standard chipset for adding six SATA ports to DIY NAS platforms such as Unraid, TrueNAS SCALE, and OpenMediaVault. Its native AHCI implementation means the Linux kernel's ahci driver enumerates all six ports without vendor drivers or firmware tools, so a single M.2-to-SATA card instantly turns a consumer motherboard with two SATA ports into an eight-drive-capable system. The low power draw is critical in always-on storage servers, where community measurements show it consumes far less idle power than an LSI 9207-8i HBA. The PCIe Gen3 x2 upstream link's ~2 GB/s bandwidth comfortably handles six spinning drives (max ~280 MB/s each) and supports clean drive spin-down, reducing noise and energy cost in home-lab deployments.
推荐
Surveillance and Video Recording Platforms
ASMedia explicitly targets surveillance platforms in the ASM1166 product description, and the fit is straightforward: NVR and video-recording appliances need many sequential-write streams (one per camera) rather than extreme single-stream speed, which matches the ASM1166's profile of six ports sharing a ~2 GB/s upstream link. A 4K camera stream at typical bitrates consumes only a few MB/s, so even twenty-plus cameras via port multipliers stay far below the PCIe Gen3 x2 ceiling. Low latency matters for live-view monitoring and event-triggered recording, and the controller's AHCI compliance means it integrates with standard Linux NVR software stacks like ZoneMinder, Frigate, and Shinobi without proprietary drivers, simplifying long-term appliance maintenance and OS upgrades.
推荐
Server and High-Capacity Storage Systems
For high-capacity storage servers built on commodity hardware, the ASM1166 provides an economical way to scale drive count beyond what the chipset offers natively. Cascaded port multiplier support allows more than six physical drives per controller where the backplane supports it, and multiple ASM1166 cards can coexist in one server, each enumerated as an independent AHCI host adapter. This architecture suits bulk-data tiers (archive, backup, media libraries) where capacity and reliability per dollar outweigh peak IOPS. Against SAS HBAs, the trade-off is clear: the ASM1166 costs less, runs cooler, and supports spin-down, while HBAs win for SAS drives and heavy random I/O. Enterprise designers should validate sustained multi-drive throughput against the x2 upstream limit.
推荐
M.2 to SATA Adapter Cards
The majority of commercial ASM1166 deployments are on M.2 A+E or M-key to 6-port SATA adapter cards, leveraging the chipset's compact QFN-88 10x10 mm package and M.2's PCIe Gen3 x2 electrical lanes. Board designers route six SATA differential pairs at 100 ohm differential impedance with length matching, attach an SPI flash for the controller firmware, and draw 3.3 V from the M.2 slot. The ServeTheHome community has documented the auxiliary UART (TX, RX) and I2C debug pads present on most cards, useful for firmware diagnostics. Designers must mind thermal budget - the exposed ground pad needs solid solder joints - and verify slot lane allocation in the target motherboard BIOS, since some chipsets wire M.2 slots at only PCIe Gen3 x1, halving available bandwidth.
推荐
Desktop Storage Expansion and Home Labs
Enthusiasts expanding media servers, game libraries, or Proxmox homelab hosts use ASM1166 cards to add six drives through a single slot. The AHCI controller is recognized by Windows, Linux, and macOS Hackintosh communities without extra drivers, and card prices around 30-45 USD make it the cheapest per-port expansion available. For desktops, both PCIe add-in-card and M.2 form factors exist; the M.2 versions suit small-form-factor builds where full-height slots are occupied by GPUs. Users should prefer reputable vendors, as Linus Tech Tips and TrueNAS forum threads report counterfeit or defective cards failing to enumerate. Power supply cabling - six SATA power connectors - is a more common practical constraint than the controller itself in these builds.
推荐
Backup and Archive Appliances
Backup targets and archive appliances prioritize capacity, cost, and idle efficiency over bandwidth, an ideal match for the ASM1166. Six SATA ports on one low-power chip let appliance builders populate high-capacity HDDs (20 TB-plus class) behind a single controller, reaching over 100 TB raw per card. The AHCI interface supports ATA standby and spin-down commands reliably, so archive tiers can keep most drives idle until a backup job runs, minimizing wear and energy use. Sequential throughput of the PCIe Gen3 x2 link (~1.9 GB/s) still exceeds what any HDD array of this class delivers concurrently, so the controller is never the bottleneck for spinning-media backup workloads. Software compatibility with Borg, Restic, ZFS send/recv pipelines is transparent because the OS sees plain AHCI disks.
推荐
推荐产品汇总
工程参考数据： ASM1166 ——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 | QFN-88, 10 x 10 mm |
| Brand | ASMedia Technology |
| Downstream SATA Ports | 6 x SATA Gen3 (6 Gbps) |
| Upstream Interface | PCIe Gen3 x2 |
| Port Multiplier Support | Yes (cascaded) |
| Protocol | AHCI |
| Typical Form Factor Use | M.2 / PCIe add-in cards |
| Drop-in Replacement Available | No pin-compatible second source |
关键差异点
- Six SATA ports on a single low-power chip （对比 JMB585)
- Lower power consumption than LSI HBA solutions （对比 LSI 9207-8i)
- Native AHCI driver support across all major OSes （对比 RAID-mode controller chips)
设计说明
Route all six SATA differential pairs as 100 ohm controlled-impedance differential pairs with a continuous ground reference, length-matching each pair within the SATA 6 Gbps skew budget and keeping pairs separated to limit crosstalk. On M.2 cards, keep the pairs short and avoid routing across plane splits. The PCIe Gen3 x2 upstream lanes deserve the same treatment. On 6 Gbps signals, vias are the dominant discontinuity - minimize them and use ground stitching vias adjacent to layer transitions.
The QFN-88 exposed pad must be soldered to a well-viased ground plane - it is the primary thermal and ground return path. Provide an SPI NOR flash for controller firmware on the BOM; an unprogrammed flash leaves the device unenumerated, a common cause of dead cards reported in community forums. Decouple all supply pins with 100 nF ceramics placed within 2 mm of each pin, plus bulk capacitance near the 3.3 V entry point.
Verify the host M.2/PCIe slot actually allocates two PCIe Gen3 lanes - many consumer chipsets wire M.2 slots at x1, cutting available bandwidth in half and causing SSD stutter when multiple drives are active. Do not assume ASPM works reliably on every motherboard: enable it, then soak-test for dropped drives before shipping an always-on NAS. Finally, source cards only from reputable vendors; counterfeit ASM1166 implementations are a documented field-failure mode.
合规信息
RoHS compliance indicated by JLCPCB listing ('ROHS'). Other compliance attributes not stated in the provided data.
