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USB2422/MJ Datasheet(PDF) 24 Page - SMSC Corporation |
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USB2422/MJ Datasheet(HTML) 24 Page - SMSC Corporation |
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24 / 51 page  2-Port USB 2.0 Hi-Speed Hub Controller Datasheet Revision 1.0 (06-04-13) 24 SMSC USB2422 DATASHEET 4.4 SMBus Registers This section details the device SMBus registers. Note: Internal Default ROM values are not visible to THE SMBus interface and cannot be read. When the hub is configured for SMBus register load, the entire register set must be written. Table 4.3 Internal Default and SMBus Register Memory Map REG. ADDRESS TYPE REGISTER NAME INTERNAL DEFAULT ROM SMBUS & EEPROM DEFAULT 00h R/W Vendor ID Least Significant Bit Register (VIDL) 24h 00h 01h R/W Vendor ID Most Significant Bit Register (VIDM) 04h 00h 02h R/W Product ID Least Significant Bit Register (PIDL) 22h 00h 03h R/W Product ID Most Significant Bit Register (PIDM) 24h 00h 04h R/W Device ID Least Significant Bit Register (DIDL) A0h 00h 05h R/W Device ID Most Significant Bit Register (DIDM) 00h 00h 06h R/W Configuration Data Byte 1 Register (CFG1) 8Bh 00h 07h R/W Configuration Data Byte 2 Register (CFG2) 20h 00h 08h R/W Configuration Data Byte 3 Register (CFG3) 02h 00h 09h R/W Non-Removable Device Register (NRD) 00h 00h 0Ah R/W Port Disable for Self-Powered Operation Register (PDS) 00h 00h 0Bh R/W Port Disable for Bus-Powered Operation Register (PDB) 00h 00h 0Ch R/W Max Power for Self-Powered Operation Register (MAXPS) 01h 00h 0Dh R/W Max Power for Bus-Powered Operation Register (MAXPB) 32h 00h 0Eh R/W Hub Controller Max Current for Self-Powered Operation Register (HCMCS) 01h 00h 0Fh R/W Hub Controller Max Power for Bus-Powered Operation Register (HCMCB) 32h 00h 10h R/W Power-On Time Register (PWRT) 32h 00h 11h R/W Language ID High Register (LANGIDH) 00h 00h 12h R/W Language ID Low Register (LANGIDL) 00h 00h 13h R/W Manufacturer String Length Register (MFRSL) 00h 00h 14h R/W Product String Length Register (PRDSL) 00h 00h 15h R/W Serial String Length Register (SERSL) 00h 00h 16h-53h R/W Manufacturer String Registers (MANSTR) 00h 00h 54h-91h R/W Product String Registers (PRDSTR) 00h 00h 92h-CFh R/W Serial String Registers (SERSTR) 00h 00h D0h R/W Battery Charging Enable Register (BC_EN) 00h 00h E0h-F5h - RESERVED - - |
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