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Analog Devices Inc./Maxim Integrated VSC7170XYQ-01
- Part No.:
- VSC7170XYQ-01
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- I/O Expanders
- Package:
- -
- Datasheet:
-
VSC7170XYQ-01.pdf
- Description:
- IC INTERFACE CONTROLLER
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Product details
Overview
VSC7170XYQ-01 from Maxim Integrated is a Serial ATA (SATA) 2:1 port selector / 1:2 port multiplier IC supporting 1.5 Gbps and 3.0 Gbps data rates, implementing failover switching or active-active initiator access to a single drive, with programmable preemphasis, receiver sensitivity, and 3.3 V single-supply operation in a 52-pin QFN package.
For engineers reviewing the VSC7170XYQ-01 datasheet, VSC7170XYQ-01 pinout, VSC7170XYQ-01 application, or VSC7170XYQ-01 equivalent, key selection criteria include SATA II compliance (Port Selector Rev 1.0, Port Multiplier Rev 1.1, PHY Rev 1.0), retimer mode support, BIST capability, and pin-configurable output swing and LOS thresholds for backplane/cable drive robustness.
Technical Context
The VSC7170XYQ-01 implements dual-mode SATA switching logic: in 2:1 port selector mode, it enables two hosts to share one drive with active-active arbitration; in 1:2 port multiplier mode, it routes one host's traffic to two drives using FIS- or command-based switching. It supports staggered spin-up and asynchronous signal recovery.
Configuration is achieved via external I/O pins and internal registers-no external flash required. It integrates analog equalization, four-level preemphasis, two-level output swing, and built-in self-test with diagnostic loopback, all operating from a single 3.3 V rail consuming 1.5 W typical power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 1.5 Gbps and 3.0 Gbps per channel-supports SATA I and SATA II link speeds without protocol translation. |
| Compliance | SATA II Port Selector Rev 1.0, Port Multiplier Rev 1.1, PHY Rev 1.0 (1i/1x/2i/2x)-ensures interoperability with standard SATA hosts and devices. |
| Supply Voltage | 3.3 V single supply-simplifies power design and eliminates need for multiple rails or LDO sequencing. |
| Power Dissipation | 1.5 W typical-enables use in thermally constrained storage enclosures without forced air cooling. |
| Preemphasis Levels | Four configurable levels via pins-allows tuning for varying trace lengths and connector losses on backplanes or cables. |
| Output Swing | Two amplitude levels selectable by pin-optimizes signal integrity across different receiver input sensitivity requirements. |
| Built-in Self Test | Diagnostic loopback mode-enables production test and field diagnostics without external test equipment. |
Pinout & Package
Package: 52-pin QFN, 8 mm × 8 mm (64 mm²), 0.5 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SATA_TXP/N[0:2] | Differential transmit output | Three independent high-speed SATA TX pairs for host/drive connections in multiplexer/selector topology. |
| SATA_RXP/N[0:2] | Differential receive input | Three independent SATA RX pairs supporting bidirectional link training and auto-negotiation per channel. |
| SEL0, SEL1 | Mode configuration input | Pin-strapped inputs selecting between 2:1 port selector, 1:2 port multiplier, or retimer mode at power-up. |
| SWING0, SWING1 | Output swing control | Two-pin encoding of two output amplitude levels for optimizing signal margin at receiver. |
| PE0, PE1 | Preemphasis control | Two-pin encoding of four preemphasis levels to compensate for high-frequency loss in long interconnects. |
| LOS0, LOS1 | Analog LOS threshold select | Configures receiver loss-of-signal detection sensitivity to avoid false disconnects on marginal links. |
Key Features
| Feature | Design Value |
|---|---|
| Active-active port selector mode | Enables concurrent access by two initiators to one SATA drive-critical for high-availability storage failover without host-side driver changes. |
| Staggered drive spin-up | Reduces inrush current during power-on in port multiplier mode-prevents voltage droop and improves system reliability in multi-drive enclosures. |
| No external flash memory | Eliminates boot dependency and component count-reduces BOM cost and simplifies firmware update logistics. |
| Spread-spectrum clocking support | Reduces EMI emissions in dense storage chassis-helps meet FCC/CE radiated emission limits without added shielding. |
| Retimer mode (optional) | Regenerates SATA signals to extend reach beyond standard cable length limits-enables reliable 2-meter+ external SATA connections. |
Applications
| High-Availability Storage Failover | SATA HBA Internal/External Port Selection |
|---|---|
Use Scenario: Dual I/O controllers accessing shared SATA disk drives in enterprise NAS or RAID subsystems requiring zero-downtime redundancy. IC Role / Device Role / Timing Role: 2:1 SATA port selector enabling active-active initiator arbitration and automatic failover without host intervention. Use Value: Maintains continuous I/O availability during controller failure-meets sub-second RTO requirements in critical data systems. | Use Scenario: A single SATA host bus adapter providing both internal motherboard-mounted and external eSATA connectors. IC Role / Device Role / Timing Role: 1:2 SATA port multiplier routing host commands to either internal or external drive based on FIS or command address. Use Value: Eliminates need for dual HBAs or PCIe lane splitting-reduces cost and complexity in compact storage appliances. |
| Disk-Based Backup Systems | SATA JBOD Expansion |
Use Scenario: Low-cost desktop SATA drives deployed in tape-library replacement backup arrays with centralized management. IC Role / Device Role / Timing Role: SATA buffer/multiplexer driving long backplane traces and external cables with programmable preemphasis and LOS thresholds. Use Value: Extends reliable SATA link distance beyond 30 cm-enables modular, hot-swappable drive bays in 1U/2U enclosures. | Use Scenario: Midrange JBOD enclosures connecting up to two SATA drives per VSC7170XYQ-01 to a SAS/SATA expander or HBA. IC Role / Device Role / Timing Role: 1:2 port multiplier with staggered spin-up and BIST-manages power sequencing and diagnostics across multiple drives. Use Value: Prevents power rail collapse during simultaneous drive startup-improves system stability and reduces field return rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SATA multiplexer/selector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip LAN9303-ABZJ | 3-port 10/100 Ethernet switch with integrated PHY-not SATA-compatible; lacks SATA-specific electrical compliance or port multiplier logic. | Designed for embedded Ethernet bridging, not storage interconnect; no support for SATA link training or FIS switching. | Select only if replacing legacy Ethernet-based storage management interfaces-not a functional substitute for SATA signal routing. |
| TI TUSB1310A | USB 2.0 high-speed transceiver-different protocol stack, signaling, and physical layer; no SATA compliance or multiplexer functionality. | Targets USB peripheral connectivity, not storage subsystem redundancy or port expansion; incompatible pinout and register map. | Not suitable for SATA infrastructure; consider only for USB-to-SATA bridge designs where protocol translation is handled externally. |
Compared with VSC7170XYQ-01, neither alternative provides SATA II port selector/multiplier functionality, electrical compliance, or pin-configurable signal conditioning-both require complete redesign of link-layer logic and physical interface, making them non-substitutable in SATA storage architectures.
Availability
VSC7170XYQ-01 is available at Aetrix Electronics and suitable for high-availability storage failover systems, SATA HBA port replication, and disk-based backup systems requiring stable component supply and long-term lifecycle visibility.
Supply support for VSC7170XYQ-01 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The VSC7170 product line targets cost-sensitive SATA storage infrastructure-delivering failover switching, port multiplication, and signal conditioning in a single-chip solution for midrange NAS, JBOD, and backup systems.
FAQ
Is VSC7170XYQ-01 still recommended for new designs?
No. VSC7170XYQ-01 is marked Not Recommended for New Designs by Maxim Integrated. Some versions may be discontinued or subject to Last Time Buy. Engineers designing new systems should verify current status directly with Analog Devices and consider migration paths. Legacy designs using VSC7170XYQ-01 remain supported through Aetrix Electronics' continuity program.
What SATA specifications does VSC7170XYQ-01 comply with?
VSC7170XYQ-01 complies with SATA II Port Selector Specification Revision 1.0, Port Multiplier Specification Revision 1.1, and PHY Electrical Specification Revision 1.0 (1i, 1x, 2i, 2x). It supports both 1.5 Gbps and 3.0 Gbps link speeds with full auto-negotiation and electrical compliance for interoperability with standard SATA hosts and drives.
Does VSC7170XYQ-01 require external configuration memory?
No. VSC7170XYQ-01 operates without external flash memory. Configuration-including mode selection (port selector/multiplier/retimer), output swing, preemphasis level, and LOS threshold-is set at power-up via dedicated pin strapping. This reduces BOM count and eliminates firmware loading dependencies.
Can VSC7170XYQ-01 be used in retimer mode?
Yes. VSC7170XYQ-01 supports optional retimer mode, regenerating SATA signals to restore jitter and amplitude-extending reliable link reach beyond standard cable limits. Retimer mode is selected via SEL0/SEL1 pin configuration and requires no additional components or software initialization.
What is the thermal package specification for VSC7170XYQ-01?
VSC7170XYQ-01 uses an 8 mm × 8 mm QFN package with 52 pins, 0.5 mm pitch, and an exposed thermal pad. Its 1.5 W typical power dissipation is managed via the thermal pad, requiring proper PCB copper pour and vias for heatsinking in enclosed storage enclosures.
VSC7170XYQ-01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- -
- Number of I/O:
- -
- Interface:
- -
- Interrupt Output:
- -
- Features:
- -
- Output Type:
- -
- Current - Output Source/Sink:
- -
- Clock Frequency:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
VSC7170XYQ-01 FAQ
1.How can I place an order for VSC7170XYQ-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for VSC7170XYQ-01 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VSC7170XYQ-01 reliable?
The price and inventory of VSC7170XYQ-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSC7170XYQ-01 is usually 5 days.
3.What payment methods are accepted for VSC7170XYQ-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSC7170XYQ-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSC7170XYQ-01?
VSC7170XYQ-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSC7170XYQ-01 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VSC7170XYQ-01?
For technical support, including VSC7170XYQ-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSC7170XYQ-01 requirements.
6.How does Aetrix verify that VSC7170XYQ-01 is sourced from the original manufacturer or authorized distributors?
All VSC7170XYQ-01 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VSC7170XYQ-01 meets industry standards.
7.What is the process for return or replacement of VSC7170XYQ-01?
All VSC7170XYQ-01 units undergo pre-shipment inspection (PSI). If there is an issue with VSC7170XYQ-01, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VSC7170XYQ-01 part is unused and in its original packaging.
Return procedure for VSC7170XYQ-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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