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USB2642 数据表(PDF) 20 Page - Microchip Technology |
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USB2642 数据表(HTML) 20 Page - Microchip Technology |
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20 / 56 page  USB2642 DS00001578C-page 20 2014-2015 Microchip Technology Inc. 7.4 System Configurations 7.4.1 EEPROM/SPI INTERFACE The USB2642 can be configured via a 2-wire (I2C) EEPROM (512x8) or an external SPI flash device containing the firmware for the USB2642. If an external configuration device does not exist the internal default values will be used. If one of the external devices is used for configuration, the OEM can update the values through the USB interface. The hub will then attach to the upstream USB host. The USBDM tool set is available in the Hub Card reader combo software release package. 7.4.2 EEPROM DATA DESCRIPTOR TABLE 7-1: INTERNAL FLASH MEDIA CONTROLLER CONFIGURATIONS Address Register Name Description Internal Default Value 00h-19h USB_SER_NUM USB Serial Number 000008264001 (Unicode) 1Ah-1Bh USB_VID USB Card Reader Vendor ID 0424 1Ch-1Dh USB_PID USB Card Reader Product ID 4041 1Eh-21h USB_LANG_ID USB Language Identifier 0409 (see Note 1) 22h-5Dh USB_MFR_STR USB Manufacturer String Generic (Unicode) 5Eh-99h USB_PRD_STR USB Product String Ultra Fast Media Reader (Unicode) 9Ah USB_BM_ATT USB BmAttribute 80h 9Bh USB_MAX_PWR USB Max Power 30h (96 mA) 9Ch ATT_LB Attribute Lo byte 40h (Reverse SD_WP only) 9Dh ATT_HLB Attribute Hi Lo byte 80h (Reverse SD2_WP only) 9Eh ATT_LHB Attribute Lo Hi byte 00h 9Fh ATT_HB Attribute Hi byte 00h A0h-A3h rsvd A4h LUN_PWR_LB LUN Power Lo byte 00h A5h LUN_PWR_HB LUN Power Hi byte 0Ah A6h-BEh rsvd BFh-C5h DEV3_ID_STR Device 3 Identifier String SD/MMC C6h-CDh INQ_VEN_STR Inquiry Vendor String Generic CEh-D2h INQ_PRD_STR 48QFN Inquiry Product String 2642 D3h DYN_NUM_LUN Dynamic Number of LUNs 01h D4h-D7h LUN_DEV_MAP LUN to Device Mapping FFh, 00h, 00h, 00h D8h-DAh rsvd |
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