Micron Technology의 JMB575 - SATA 6Gb/s 5-Port Multiplier Chip | JMicron JMB575 - 전자 부품
Micron Technology

JMB575 - SATA 6Gb/s 5-Port Multiplier Chip | JMicron

부품 번호: JMB575 ✓ 활성
재고 있음 영업일 기준 1~3일 내 발송
QFN-64 Package SRAM and PROM Memory
시작가 $2.85 USD / 개
MOQ: 1 |
가격 업데이트: 2026-10-19
볼륨 가격
수량 단가 합계
1 $4.5 $4.50
10 $4.05 $40.50
100 $3.6 $360.00
500 $3.2 $1,600.00
1,000 $2.85 $2,850.00
ℹ️ 모든 가격은 USD 기준입니다
데이터시트 보기 (PDF) 대체품 보기

JMB575 개요

The JMicron JMB575 is a single-chip SATA 6Gb/s Port Multiplier / Port Selector controller integrating six high-speed Serial I/O blocks, six independent SATA upper layers, an embedded microprocessor, SRAM, and PROM in a 64-pin QFN package.

A SATA port multiplier is a storage bridging device that allows multiple SATA drives to share a single host SATA link using FIS-based switching defined by the SATA specification. Within the storage-IC hierarchy (interface controller -> SATA bridge -> storage controller), the JMB575 sits between one host SATA 6Gb/s port and up to five device ports, arbitrating traffic without host software changes.

Key features include 1-to-5-port Port Multiplier mode, 5-to-1-port Port Selector mode, SATA 6Gb/s (SATA III) line rates on all six serial channels, and fully embedded firmware - the chip boots from internal PROM and SRAM with no external flash required. An external flash interface is available for custom firmware when extended capability is needed.

Architecturally, the JMB575 combines six serial I/O macrocells with six SATA protocol engines and an on-chip microprocessor that runs JMicron's embedded firmware. Cascaded mode allows multiple JMB575 devices to be chained, connecting up to 15 drives to a single host port - useful in multi-bay enclosures where each cascade level shares the 6Gb/s host bandwidth.

Typical applications include multi-bay DAS (direct-attached storage) enclosures, NAS backplane expansion behind a 6-port SATA host controller such as ASMedia ASM1166, external USB-to-5x-SATA adapters (commonly paired with the JMS580 USB-to-SATA bridge), and industrial storage subsystems.

Design consideration: because all cascaded drives share one 6Gb/s host link, sustained aggregate throughput per drive decreases with cascade depth - plan bandwidth budgets accordingly and verify drive spin-up stagger settings for power sequencing in multi-bay products.

This page synthesizes distributor data, JMicron product documentation, and practical deployment notes (cascading, USB pairing) not found in the two-page product brief.

드롭인 대체품: JMB575 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:

JMB572

✅ 드롭인 ⚠️ 사양 미검증
📦 QFN-64
Lower port count port multiplier from same JMB57x family (typically 1-to-2 ports vs 1-to-5); package and pinout must be verified against board footprint before substitution

📋 참조 대체품 (카탈로그에 없음)

JMB575 사양

Product Type SATA Port Multiplier / Port Selector Chip
Serial Channels 6 independent SATA channels
데이터 속도 6 Gb/s (SATA III / Gen 3)
Port Multiplier Mode 1 to 5 ports
Port Selector Mode 5 to 1 ports
Cascaded Mode Up to 15 drives per host
Integrated Processor Embedded microprocessor
On-chip Memory SRAM and PROM
External Flash Not required (optional external flash interface)
Firmware Embedded (internal)
패키지 QFN-64
실장 유형 Surface Mount
RoHS 상태 Compliant
Supported Host Bridges Paired with JMS580 (USB 3.x to SATA) in commercial adapters

JMB575 qfn-64 핀 구성 가이드

JMB575(qfn-64 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.

JMB575의 qfn-64 패키지 핀아웃 다이어그램

다음에 대한 상세 핀아웃 데이터 없음: JMB575.

다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.

일반적인 애플리케이션

JMB575 적합 용도: 6 애플리케이션s: Multi-Bay DAS Enclosures, USB to 5x-SATA Adapter Cable, NAS Backplane Port Expansion, Drive Duplication and Imaging Stations, Industrial and Embedded Storage Subsystems, External RAID Enclosure Control.

🖥️

Multi-Bay DAS Enclosures

The JMB575's 1-to-5-port SATA 6Gb/s port multiplier mode makes it the standard silicon for 4- and 5-bay direct-attached storage enclosures that expose a single eSATA or USB host link. Each drive bay connects to one of the chip's five device ports while the host link feeds the multiplier port, with the embedded firmware handling FIS-based switching transparently to the OS. Because all bays share the single 6Gb/s host link, a fully loaded enclosure divides roughly 6Gb/s (about 550 MB/s real-world) across active drives, which is adequate for home backup and media storage but not for simultaneous heavy transfers. Designers should implement drive spin-up staggering to limit inrush current when all bays power on simultaneously.

추천

JMS580 · Micron Technology ASM1166 · ASMedia Technology Inc.
🔧

USB to 5x-SATA Adapter Cable

Consumer Type-C adapters commonly pair the JMB575 with the JMS580 USB-to-SATA bridge: the JMS580 converts one USB 3.x 5-10 Gbps link into a single SATA 6Gb/s link, which the JMB575 then multiplies to five SATA device connectors. The two-chip design requires no host-side port-multiplier awareness for basic enclosure use, and the JMB575's internal PROM firmware means no flash IC is needed on the tiny adapter PCB. Engineering trade-off: all five drives share the SATA link, so simultaneous multi-drive reads are slower than per-drive USB bridges; this is acceptable for backup and archival use. Power delivery for five 2.5-inch drives must come from an external DC input rather than bus power.

추천

JMS580 · Micron Technology JMS578 (Single-drive USB to SATA companion bridge)
🧩

NAS Backplane Port Expansion

In entry-level NAS builds where the host board provides only one or two spare SATA ports, the JMB575 multiplies a single port to five drive backplane connectors, and cascaded mode reaches 15 drives per host link - as deployed on DIY NAS boards pairing an ASMedia ASM1166 host controller with JMB575 multipliers per bank. The chip's transparency to the host OS (the SATA port multiplier layer is handled by AHCI drivers) means no vendor driver is needed on Linux or Windows. Designers should verify host controller port-multiplier (PMP) support, since some AHCI implementations are limited to a single multiplier level, and should budget bandwidth per bay in RAID rebuild scenarios where multiple drives stream concurrently.

추천

ASM1166 · ASMedia Technology Inc.
🎥

Drive Duplication and Imaging Stations

The 5-to-1-port Port Selector mode lets up to five host-side SATA connections time-share one target drive, which duplicator and forensic imaging equipment uses to route one shared drive among multiple controller channels without mechanical or relay switching. The JMicron embedded firmware arbitrates port selection, and the optional external flash interface allows OEM firmware customization for unit-specific imaging policies such as write-blocking on the source side. Because the selector guarantees that only the selected path is active, signal integrity matches a direct SATA connection at 6Gb/s. Stations requiring parallel one-to-many duplication should instead use the port multiplier direction with host-side software, or multiple dedicated bridge chips per target.

추천

JMS567 (SATA to USB 3.0 bridge for host-side channels)
🏭

Industrial and Embedded Storage Subsystems

Industrial recorders, video surveillance appliances, and embedded data loggers often need several SATA drives behind a constrained set of host ports. The JMB575 expands one SATA 6Gb/s port into five, and with two cascade levels supports 15 drives from a single host connector, minimizing host controller count on space-limited carrier boards. The RoHS-compliant QFN-64 package reflows on standard SMT lines, and firmware stored in internal PROM eliminates BOM items that could suffer sourcing issues in long-life industrial builds. Engineers should confirm the commercial temperature rating against the product's environmental requirements, and provision the exposed pad for solid grounding to manage thermal dissipation in sealed fanless enclosures.

추천

ASM1166 · ASMedia Technology Inc.
⚡

External RAID Enclosure Control

Consumer multi-bay RAID enclosures frequently cascade a JMS567-class USB bridge into one or three JMB575 port multipliers to reach 5 or 15 bays behind one upstream cable. The JMB575 presents each physical drive as an individual port multiplier port so host-side RAID software (Windows Storage Spaces, Linux md-raid, macOS HFS+ software RAID) manages the array while the chip remains protocol-transparent. Firmware backup is an important service consideration: community reports note that corruption of the embedded firmware can render cascaded bays inaccessible, so enclosure designers should expose the external flash interface in production for field recovery. Shared 6Gb/s bandwidth should be factored into RAID-level throughput expectations.

추천

JMS567 (USB 3.0 to SATA bridge at the host end) JMS580 · Micron Technology

추천 제품 요약

JMS580 Micron Technology 사용처: Multi-Bay DAS Enclosures, USB to 5x-SATA Adapter Cable, External RAID Enclosure Control ASM1166 ASMedia Technology Inc. 사용처: Multi-Bay DAS Enclosures, NAS Backplane Port Expansion, Industrial and Embedded Storage Subsystems JMS578 Single-drive USB to SATA companion bridge 사용처: USB to 5x-SATA Adapter Cable JMS567 SATA to USB 3.0 bridge for host-side channels 사용처: Drive Duplication and Imaging Stations, External RAID Enclosure Control
What is the JMicron JMB575?
The JMicron JMB575 is a single-chip SATA 6Gb/s Port Multiplier and Port Selector controller. According to the JMicron product brief, it integrates six high-speed Serial I/O blocks, six SATA upper layers, a microprocessor, SRAM, and PROM, and can operate as a 1-to-5-port Port Multiplier or a 5-to-1-port Port Selector entirely from internal embedded firmware with no external flash.
How many drives can the JMB575 support?
The JMB575 natively connects one host SATA 6Gb/s port to five device SATA ports. According to the JMicron product page, its cascaded mode enables a maximum of 15 drives connected to one host by chaining multiple port multiplier levels. Note that all drives in a cascade share the single 6Gb/s host link bandwidth, so per-drive sustained throughput decreases as cascade depth increases.
Does the JMB575 need external flash firmware?
No. According to the JMicron product brief, the JMB575 works with internal embedded firmware stored in on-chip PROM and SRAM, requiring no extra external flash for standard operation. However, it also provides an external flash interface so that custom firmware can be programmed to extend its capability, for example in OEM products needing customized power sequencing or LED behavior.
What is the difference between JMB575 and JMB572?
The JMB575 is a 1-to-5-port SATA 6Gb/s port multiplier, while the JMB572 is a lower-port-count member of the same JMicron port multiplier family (typically 1-to-2 ports). Both integrate independent SATA channels with an embedded microprocessor and embedded firmware. Choose the JMB575 when five device ports or cascading to 15 drives is required; the JMB572 suits two-bay designs with lower cost.
Can the JMB575 be used with a USB to SATA bridge?
Yes. Commercial multi-bay USB adapters commonly pair the JMB575 with a JMS580 USB 3.x-to-SATA bridge chip: the JMS580 converts USB to a single SATA 6Gb/s link that feeds the JMB575, which then fans out to five SATA drive ports. This is the architecture of many AliExpress and Amazon Type-C to 5-port SATA adapters, though all five drives share the single 6Gb/s host link.
What is the price of the JMB575?
As of 2026-10-19, XAIPART lists the JMB575 starting at 4.50 USD for quantity 1, stepping down to approximately 2.85 USD at 1000 pieces. Availability through JLCPCB Assembly is listed for the QFN-64 packaged part. For exact current pricing and lead time in your region, request a quote, as stock levels for this JMicron part vary between Asian distribution channels.
Where can I buy the JMB575 online?
The JMB575 is available through XAIPART with quantity-break pricing and through JLCPCB Assembly, which stocks the QFN-64 RoHS-compliant part (part C9900048571) for SMT assembly service. The JMB575-QGSP0A package variant (QFN-64, 9x9 mm, 0.5 mm pitch, exposed pad) is also listed at JLCPCB. Unlike mainstream controllers, it is generally not stocked by Western distributors such as DigiKey or Mouser, so Asian assembly channels are the primary source.
What is the best drop-in replacement for the JMB575?
There is no widely documented pin-to-pin drop-in replacement from a different manufacturer; SATA port multipliers are a niche market dominated by JMicron. The closest same-family alternative is the JMB572 from the same JMicron port multiplier line, but it serves fewer ports and its package/pinout must be verified against your footprint before substitution. For new designs needing more ports, consider moving to a multi-port host controller such as ASM1166 instead of cascading multipliers.
What package does the JMB575 come in?
The JMB575 is supplied in a 64-pin QFN (Quad Flat No-lead) package. JLCPCB lists the standard part as QFN-64, and the JMB575-QGSP0A ordering code denotes a 9 x 9 mm, 0.5 mm-pitch QFN-64 with exposed pad (EP) suitable for standard SMT reflow assembly. No-lead construction aids thermal dissipation through the PCB ground pour, so connect the exposed pad to a solid ground plane.
Does the JMB575 support SATA III 6Gb/s speeds?
Yes. According to the JMicron product page, the JMB575 supports SATA 6Gb/s (SATA III / Gen 3) line rates and can be configured as a 1-to-5-port SATA 6Gb/s Port Multiplier or a 5-to-1-port SATA 6Gbps Port Selector. All six integrated serial channels operate at 6Gb/s, although a single cascade shares one host link, so aggregate simultaneous throughput remains capped at one 6Gb/s link.
Is the JMB575 suitable for a NAS or multi-bay DAS enclosure?
Yes, the JMB575 is widely used in 4- and 5-bay DAS enclosures and entry-level NAS backplanes because it multiplies one SATA host port to five drive ports and supports cascading to 15 drives. However, since all drives share one 6Gb/s link, it fits home/small-office storage better than performance-critical arrays; for many-drive servers, engineers often prefer SAS HBAs or multi-port SATA host controllers such as ASM1166 for full per-port bandwidth.
Is the JMB575 RoHS compliant?
Yes. According to JLCPCB's part listing, the JMB575 is offered as a RoHS-compliant, lead-free surface-mount component suitable for standard reflow assembly. Detailed REACH, halogen-free, and conflict-minerals declarations are not published in the retrieved product documentation, so confirm those specific compliance certificates with JMicron or your distributor when required for regulatory filings.
What are the key specifications of the JMB575 that engineers should know?
The key facts: six independent SATA 6Gb/s channels, 1-to-5 Port Multiplier and 5-to-1 Port Selector modes, cascaded mode supporting up to 15 drives per host, embedded microprocessor with internal SRAM/PROM firmware requiring no external flash, optional external flash interface for custom firmware, and a 64-pin QFN RoHS package. All drives share the single host link bandwidth, and custom operation requires JMicron firmware tooling.
How do I configure the JMB575 as a Port Selector instead of a Port Multiplier?
Configuration is handled by the chip's setting pins and embedded firmware rather than host drivers. According to the JMicron product brief, with proper setting the chip works as a 1-to-5 Port Multiplier or a 5-to-1 Port Selector where one drive is shared among up to five hosts. The exact strap-pin or firmware configuration options are detailed in JMicron's full datasheet, so consult the official document or contact JMicron FAE support for your specific configuration.
Where can I download the JMB575 datasheet PDF?
The official JMB575 product brief PDF is available from JMicron at jmicron.com (file download 893). A two-page datasheet is also mirrored on Alldatasheet (document ID 1136434, 224 KB, 2 pages). The retrieved public documents are product-brief level; the full programming and register datasheet (PDS-16011, Rev 1.2) circulates under NDA via JMicron or its ODM customers, so request it directly from JMicron for design-in work.

엔지니어링 참조 데이터: JMB575 — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose the JMB575 when you need to expand one SATA 6Gb/s host link to up to five drives - or up to 15 in cascaded mode - in a DAS enclosure, NAS backplane, or USB-to-multi-SATA adapter, and when a flash-free BOM matters. Choose the same-family JMB572 for cost-sensitive two-bay designs where five ports are unnecessary (verify package compatibility first). Skip port multipliers entirely and use a 6-port host controller such as ASM1166 when per-drive full bandwidth is required, since every JMB575 bank shares a single 6Gb/s link; SAS HBAs remain the choice for high-drive-count servers. For drive-duplication and forensic products, the JMB575's Port Selector mode eliminates mechanical switching. Always confirm host PMP support and bridge-chip firmware compatibility before design-in.

대체품과의 비교

파라미터 이 제품 JMB572
Package QFN-64 QFN-64 (verify per ordering code)
Brand JMicron Technology JMicron Technology
SATA Line Rate 6 Gb/s (SATA III) 6 Gb/s (SATA III)
Port Multiplier Configuration 1 to 5 ports 1 to 2 ports
Embedded Firmware / No External Flash Yes (internal PROM/SRAM) Yes (internal PROM/SRAM)

주요 차별점

  • Five device ports from one host link in a single chip (vs JMB572)
  • Zero-flash BOM with embedded PROM firmware (vs JMB572)
  • Dual-mode silicon (multiplier + selector) (vs Discrete switching solutions)

설계 노트

As a QFN-64 part running six 6Gb/s serial channels, the JMB575 requires disciplined high-speed layout: keep each SATA differential pair at 100-ohm differential impedance with matched intra-pair lengths, and route pairs on a continuous reference ground plane without crossing plane splits. Solder the exposed pad to a solid ground pour with an array of thermal vias - this is both the main thermal path and the return-current path for the serial links. Place 0.1uF decoupling capacitors at each supply pin within 2 mm of the ball/pad location.

Estimated: with six SATA links active, aggregate power draw is dominated by the serial I/O; budget supply rails per JMicron's power tables in the full datasheet, which is not public in the retrieved brief. For a 5-bay enclosure, drive spin-up is the dominant inrush event - implement staggered spin-up (either firmware-controlled or via drive jumper/PMC) and size the 12V rail with margin, since five drives spinning up simultaneously can demand 10-20 A peak on 12V. Never power five 3.5-inch drives from USB bus power.

Verify host controller port-multiplier support before committing to a JMB575 cascade: many AHCI hosts support only one multiplier level (15-drive cascades then fail), and some USB-to-SATA bridges do not pass PMP commands at all - confirm the JMS580/JMS567 firmware version supports PMP passthrough. Back up firmware when using external flash; community reports document cascaded enclosures losing half their bays after firmware corruption. Also remember all drives share one 6Gb/s host link - do not spec per-drive performance above the shared-link budget.

규정 준수 정보

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
무연
Yes
무할로겐
Unknown
분쟁 광물
Unknown

RoHS compliance stated on JLCPCB part listing for the QFN-64 packaged JMB575. REACH, halogen-free, and conflict-minerals declarations not published in retrieved data.

데이터 검증일: 2026-10-19 — XAIPART 부품 엔지니어링 팀이 검증하고 관리한 데이터

관련 검색

JMB575 datasheet JMicron JMB575 port multiplier JMB575 SATA 6Gb/s 5 port multiplier chip JMB575 QFN-64 package JMB575 vs JMB572 difference JMB575 equivalent drop-in replacement JMB575 JMS580 USB to 5 SATA adapter JMB575 buy price JMB575 cascaded mode 15 drives JMB575 port selector mode what is a SATA port multiplier JMB575 JMB575 NAS enclosure chipset

관련 부품 & 용어

JMicron Technology JMB575 JMB572 JMS580 JMS567 SATA port multiplier Port Selector SATA III SATA 6Gb/s FIS-based switching QFN-64 Quad Flat No-lead surface mount RoHS ASM1166 embedded microprocessor SRAM PROM firmware DAS enclosure NAS backplane AHCI eSATA USB to SATA bridge
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