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Elan Digital公司的USBHC869是全速USB主控制器,可使微处理器和微控制器增加USB主控制功能,USB2.0全速主控制,3.3V工作,I/O电压3.3V,2.8V或1.8V,单独的16KBTx和Rx FUFO,功耗只有40mW,主要用在手机,智能手机,UMPC,主板和MID等.本京电港论坛文章先容了USBHC869主要特点,多中和MCU毗连图以及评估板电路原理图纸. USBHC869: Microprocessor bus USB Host Controller The USBHC869 is a Full Speed USB Host Controller designed to add USB Host capability to Microprocessors and Microcontrollers. The device measures just 4 x 4 mm is size thus consuming very little board space. The asynchronous parallel bus is compatible with common microprocessor bus architectures or can be attached to the port pins of a microcontroller. For maximum flexibility, the interface can be used in 8 bit or 16 bit mode and at any I/O voltage level of between 1.8 and 3.3V. The USBHC869 has an integrated crystal oscillator and a Phase Lock Loop module allowing a number of clocking options. A very low power shutdown mode is available to conserve power in battery powered applications. An attached USB device can still signal a Resume wakeup signal to the host processor when the USBHC869 is in shutdown. The USBHC869 has a fully USB1.1 compliant full speed (12Mb/s) transceiver together with integrated pull down resistors to further reduce the component count and save space. USBHC869主要特点: ● USB2.0 Full Speed Host ● Low power 3.3V operation ● 3.3V, 2.8V or 1.8V I/O ● 8/16-bit low pin count microprocessor interface ● Separate 16KByte TX and RX FIFOs. ● Low power consumption: 40mW ● Very low power shutdown mode ● Very small package : 36 pin LGA 4mm x 4mm x 0.9mm ● Fully ‘green’, lead-free and RoHS compliant USBHC869应用: The USBHC869 is a USB Host Controller ideal for embedded applications including : mobiles / cellphones smartphones UMPC motherboards Mobile Internet Devices - MID As a high performance alternative to FTDI, Maxim and NXP host controllers |
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