Sigmatel launches USB2.0 high-speed IRDA infrared controller STIR4220 and STIR4210, supports Macintosh software drivers and Linux operating systems. Stir4220 is a very fast infrared (VFIR) controller, speed up to 16Mbps, while STIR4210 Fast Infrared (FIR) controller, rate For 4Mbps, Stir4116 Serial Infrared (SIR) controller is a pin compatible device that enables manufacturers to create a USB2.0 high speed adapter at different prices.
STIR4210 / 4220 and STIR4116 are low-power USB 2.0 high-speed Irda bridge controllers, making the USB IRDA communication solution possible. STIR4210 / 4220 and STIR4116 can directly connect to USB bus, provide all functions between USB 2.0 and IR transceivers USB IR communication subsystem can be implemented by increasing an IR transceiver, a 24 MHz crystal and several passive components used to bypass and power filtering.
STIR4210 / 4220 and STIR4116 are compatible with IrDA serial infrared physical standards V1.4.STIR4210 supports sleep data rate to 4Mbps (FIR), STIR4220 supports data rate up to 16Mbps (vfir), including FIR, MIR and Sir.stir4116 SIR rates 115kbps.stir4210 and STIR4220 devices support all lower data rates made by IRDA standards (SIR and MIR).
STIR4210 / 4220 and STIR4116 implement USB 2.0 high-speed device controller, including integrated PHY transceiver, IR protocol controller, microcontroller. Memory for program and buffer, and voltage adjustment required based on USB infrared subsystem .
High-performance microcontroller provides control functions. In-kind program ROM and program / data RAM omitted external components. RAM is used as data, buffer, and ROM patch. The IR protocol controller supports IRDA encoding required for various data rates and Decoding, so that STIR4210 / 4220 and STIR4116 can interface with the highest performance and various IR functional equipment. There is an application for all-frame transmission support. The GPIO pin supports external functional control. These pins include active LEDs and transceivers ID pin. Adoption of these pins, drives can detect the transceiver used, if you need to configure performance parameters, integrated voltage regulators convert USB 5.0V power supply into devices and IRDA transceivers 1.8V and 3.3V power supply.
The nuclear operating voltage of Stir4210 / 4220 and STIR4116 is 1.8V, I / O voltage is 3.3V, with 5.0V input tolerance. STIR4210 / 4220 and STIR4116 supported operating systems have Mac OS, Linux, WinMe, Win2000, Win XP, and later Windows OS.
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