Infineon Technologies CYWB0163BB-FBXIT

Overview

CYWB0163BB-FBXIT from Cypress Semiconductor is a West Bridge® USB-to-SD/eMMC bridge controller supporting SD 2.0/3.0, eMMC 4.3/4.4, HS-USB, I2C, SPI, UART, I2S, SDIO, and OTG modes. It operates from 1.15 V to 1.25 V over –40 °C to +85 °C and features 19.2/26/38.4/52 MHz clock inputs. It targets embedded storage interface consolidation in automotive infotainment head units.

For engineers reviewing the CYWB0163BB-FBXIT datasheet, CYWB0163BB-FBXIT pinout, CYWB0163BB-FBXIT application, or CYWB0163BB-FBXIT equivalent, key selection factors include multi-protocol timing alignment, 131-pin BGA package compatibility, low-voltage I/O compliance, and automotive temperature range validation.

Technical Context

The CYWB0163BB-FBXIT integrates dual high-speed serial interfaces: one HS-USB 2.0 PHY with OTG support (HS/FS/LS), and one SDIO/SD/eMMC host controller compliant with SD 3.0 and eMMC 4.4 specifications. It includes dedicated I2C, SPI, UART, and I2S peripherals for sideband control and audio/data bridging.

Its internal clock management accepts four fixed crystal frequencies (19.2, 26, 38.4, 52 MHz) and generates all required domain clocks without external PLLs. The device uses a 1.2 V core supply with 1.15–1.25 V tolerance and supports 1.8 V I/O signaling via level-shifting circuitry.

Key Specifications

Pinout & Package

131-pin fine-pitch BGA (7 mm × 7 mm, 0.5 mm pitch), 12 × 12 array with corner pads omitted; thermal pad centered on underside for PCB-level heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB-to-flash bridge applications.

Compared with USB2642 and RTS5411, CYWB0163BB-FBXIT uniquely combines automotive qualification, eMMC 4.4 HS200, I2S audio streaming, and unified low-voltage operation - making it the only option for cost-sensitive, thermally demanding IVI and medical edge devices requiring multi-protocol convergence.

Availability

CYWB0163BB-FBXIT is available at Aetrix Electronics and suitable for in-vehicle infotainment, industrial data loggers, and medical imaging peripherals requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CYWB0163BB-FBXIT 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

Cypress Semiconductor (now part of Infineon Technologies) designs high-performance mixed-signal ICs for embedded connectivity, memory interface, and programmable system solutions.

CYWB0163BB-FBXIT belongs to the West Bridge® family, engineered specifically to simplify USB-to-flash storage bridging in resource-constrained embedded systems with stringent thermal and protocol requirements.

FAQ

Does CYWB0163BB-FBXIT support eMMC 5.0 or later?

No. The device is specified for eMMC 4.3 and 4.4 only, including HS200 mode. It does not implement eMMC 5.0 features such as HS400 or enhanced re-timer support. Designers targeting eMMC 5.0 must select newer-generation bridge controllers with updated PHY and command set compliance.

Can CYWB0163BB-FBXIT operate with a 1.8 V core supply?

No. The core logic requires 1.15–1.25 V; VDD_CORE outside this range violates absolute maximum ratings and causes functional failure. VDDIO_18 supplies 1.8 V to I/O buffers only - core voltage must be independently regulated to 1.2 V nominal.

Is external EEPROM required for configuration?

Yes. Configuration parameters including USB descriptors, SD/eMMC timing settings, and I/O voltage modes are loaded from an external I2C EEPROM at power-up. The device lacks internal nonvolatile configuration storage and will not initialize without valid EEPROM contents.

What is the maximum SD card speed class supported?

The device supports SD 3.0 UHS-I SDR104 mode (up to 104 MB/s) and SD 2.0 High-Speed mode (up to 25 MB/s). It does not support SD 4.0 or UHS-II due to lack of dual-lane signaling and 1.2 V signaling compliance beyond SDIO interface limits.