CYWB0226ABM-BVXI

Controllers Overview

The CYWB0226ABM-BVXI is a West Bridge Astoria USB and Mass Storage Peripheral Controller manufactured by Cypress Semiconductor. It features the SLIM architecture for simultaneous independent data paths between the processor, USB, and mass storage. The device supports up to 16 NANDs with 8 chip enables for x8 or x16 SLC/MLC NAND Flash devices and includes 4-bit error correction coding. It operates at high-speed USB 480 Mbps compliant with USB 2.0 standards and integrates an internal USB switch. The controller utilizes an embedded 8051 microprocessor for transaction management and supports flexible processor interfaces including SRAM, pseudo CRAM, and SPI slave modes.

Controllers Feature Summary

• SLIM architecture enabling simultaneous independent data paths between processor, USB, and mass storage
• Integrated USB switch allowing interfacing to external Full Speed USB PHY
• N-Xpress NAND controller technology supporting interleaving of up to 16 NANDs with 8 chip enables
• Embedded 8051 microprocessor managing physical-to-logical mapping, ECC, and wear leveling

Controllers Applications

• Cellular Phones
• Portable Media Players
• Personal Digital Assistants
• Digital Cameras
• Data Cards and Wireless Dongles

Controllers Procurement Notes

Verify the specific ordering suffix BVXI confirms the 100-pin VFBGA package type and lead-free status. Confirm that the ABM variant designation aligns with the required MLC NAND Flash support capabilities. Ensure the clock input frequency requirements match the supported options of 19.2 MHz, 24 MHz, 26 MHz, and 48 MHz specified in the datasheet.

Controllers Selection Notes

Select this model when both MLC NAND Flash support and an integrated USB switch are required. The ABS variant lacks the USB switch feature. Verify that the system design accommodates the 6x6mm VFBGA footprint. Ensure the application requires the specific combination of high-speed USB connectivity and multi-NAND interleaving capabilities provided by the Astoria architecture.

Controllers Part Context

This component belongs to the West Bridge Astoria family, which also includes the CYWB0224ABS and CYWB0224ABM models. The primary distinction of the CYWB0226 series is the inclusion of an integrated USB switch compared to the CYWB0224 series. The ABM suffix indicates support for both SLC and MLC NAND Flash devices, whereas the ABS suffix is limited to SLC only.

Controllers Replacement Considerations

CYWB0224ABM-BVXI (lacks integrated USB switch)

Controllers FAQ

What is the difference between the CYWB0226ABM and CYWB0224ABM?

The CYWB0226ABM includes an integrated USB switch that allows interfacing to an external Full Speed USB PHY, whereas the CYWB0224ABM does not have this integrated switch.

Does the CYWB0226ABM support MLC NAND Flash?

Yes, the ABM variant supports both SLC and MLC NAND Flash devices, providing 4-bit error correction coding for MLC devices.

How many NAND Flash devices can be interleaved?

The device can interleave up to 16 NAND Flash devices using 8 chip enables (CE#) for x8 or x16 configurations.