LSI LSISAS1078-C2

Mfr. Part

LSISAS1078-C2

Manufacturer

LSI (now part of Broadcom). Y-IC is a quality distributor of LSI products and we will provide you with the best products and services, fast support, and reliable supply.

Detailed Description

Enterprise RAID-on-Chip (ROC) controller for 3 Gb/s SAS and SATA. The LSISAS1078-C2 integrates SAS/SATA PHYs, RAID acceleration engines, and a PCI Express host interface on one chip. It is widely used on add-in RAID cards and onboard server RAID mezzanines. Typical features include up to 8 SAS/SATA lanes, PCIe x8 (Gen1) host connectivity, hardware RAID 0/1/5/6/10/50/60, and an external DDR2 cache interface with battery/flash-backed cache options. Classified under Integrated Circuits (ICs) → Specialized ICs.

Key Features

Up to 8 lanes of 3 Gb/s SAS/SATA for HDDs and SSDs

PCI Express x8 Gen1 host interface for server platforms

Hardware RAID acceleration for RAID 0, 1, 5, 6, 10, 50, 60

Dedicated XOR and RAID6 P/Q engines for fast parity

External DDR2 SDRAM cache interface; supports cache protection (BBU/flash)

Enclosure management support (SES, SGPIO), S.M.A.R.T., NCQ

Proven firmware stacks (MegaRAID, Fusion-MPT based), broad OS support

Robust error handling, consistency check, patrol read, online RAID migration

Key Advantages

High integration reduces component count and board space

Mature, proven silicon widely deployed in enterprise servers

Broad drive and expander interoperability across SAS/SATA ecosystems

Strong performance per watt for 3 Gb/s generation storage

Stable firmware and driver support simplifies qualification and maintenance

Cost-effective choice for sustaining and repair of legacy platforms

Packaging

Type: Fine-pitch FCBGA (flip-chip ball grid array), high ball-count enterprise controller package

Pin/ball configuration: Approximately 869 balls (per package/case “869”), with functional groups for PCIe x8, SAS/SATA high-speed differential pairs, DDR2 cache interface, clocks, management/JTAG/GPIO, power/ground

Material: Lead-free, RoHS-compliant solder balls and organic substrate (SnAgCu family)

Size: Large square BGA footprint suitable for heatsink attachment; exact body size and ball pitch per official outline drawing (see datasheet for mechanicals and ball map)

Thermal characteristics: Requires heatsink and airflow; design to keep case/junction temperature within datasheet limits under worst-case I/O and cache traffic; provide good copper planes and thermal interface material

Electrical properties: Multiple supply rails typical for ROCs (core rail ~1.0–1.2 V, DDR2 VDD 1.8 V, I/O rails up to 3.3 V as applicable); high-speed SAS/SATA and PCIe interfaces comply with their respective electrical specs. Exact rail values, sequencing, and decoupling per datasheet and reference design

Lifecycle

Status: Legacy/NRND in most channels and generally discontinued for new designs as LSI advanced to 6 Gb/s and 12 Gb/s platforms. Suitable for sustaining, repair, and like-for-like replacements in existing systems.

Equivalent or alternative models (not pin-to-pin, but functional successors):

- LSI SAS2008: 6 Gb/s SAS IOC, PCIe 2.0 x8, HBA-class (no onboard RAID acceleration)

- LSI SAS2108: 6 Gb/s SAS ROC, PCIe 2.0 x8, hardware RAID, used in many MegaRAID adapters

- LSI SAS2208: 6 Gb/s SAS ROC, higher performance dual-core variant, PCIe 2.0 x8

- LSI SAS2308: 6 Gb/s SAS IOC, PCIe 3.0 x8 capable in some implementations

- LSI SAS3008: 12 Gb/s SAS IOC, PCIe 3.0 x8

- LSI SAS3108: 12 Gb/s SAS ROC, PCIe 3.0 x8, hardware RAID successor

- Later Broadcom/LSI SAS34xx/SAS35xx series: 12 Gb/s ROC/IOC families for current designs

Pin-to-pin equivalence is unlikely across generations. For a precise cross-reference and drop-in feasibility, contact our sales and engineering team via the Y-IC website. If no listed alternative fits your needs, we can advise the closest match and migration path.

Key Application Areas

Server RAID controllers (add-in cards and embedded/ROMB solutions)

Direct-attached storage (DAS) and JBOD enclosures

Entry to mid-range enterprise storage arrays

Industrial PCs and workstation storage subsystems

Video surveillance NVR/DVR storage backends

High-availability and virtualization hosts needing RAID-protected local storage

Datasheet

Y-IC hosts the most authoritative datasheet and technical documents for LSISAS1078-C2 on our product page. We strongly recommend downloading the datasheet from this page for exact specifications, pinout/ball map, power rails, thermal limits, and reference design guidance.

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