OTi–6889 USB Host/Device and Memory Card Interface Controller

The OTi-6889 is a high-quality IC controller developed to offer digital data connectivity for a variety of applications, especially for audio applications. The connectivity of OTi-6889 includes USB Host/Device (USB 2.0 Full Speed) and SD/MMC cards. The controller also offers comprehensive data and command interfaces, , such as Bitstream, I2C, I2S, UART, SPI and GPIOs, to work with audio decoders or MCUs.

The USB interface of OTi-6889 supports auto-detecting Host and Device functions, complying with Mass Storage Class (Bulk Only/CBI) and Audio Class (Isochronous) specifications. The PC Link function is enabled by the USB Device function and Audio Class driver.

To facilitate software update of the system with OTi-6889 built in, OTi-6889 supports ISP (In-System Programming). New software can be loaded into an audio system and overwrite old software via the USB host socket enabled by OTi-6889.

Features

● Support Full-speed (12Mb/s) USB 1.1 host/device function
● Built-in SD/MMC card interface (SD specification V1.1, MMC specification V4.1 - Only available in LQFP-128 package).
● Supports USB 1.1 and 1.2 mass storage device
● Built-in USB transceiver
● Built-in Phase Lock Loop (PLL)
● Supports In- System -Programming (ISP) function.
● Supports PC-Link function
● Built-in RISC micro-controller; high-performance RISC architecture with single cycle per instruction
● Customizable I2C, I2S, general purpose serial interface and GPIOs
● 12MHz and 18.432MHz external crystal for USB application and PC-LINK function.
● Power supply: 3.3 V.
● 128k Bytes programmable ROM
● FAT12, FAT16 and FAT32 supported
● Minimized size - standard 80-pin and 128-pin LQFP package

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