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LTC2972 Scheda tecnica(PDF) 88 Page - Linear Technology |
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LTC2972 Scheda tecnica(HTML) 88 Page - Linear Technology |
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88 / 112 page  LTC2972 88 2972fa For more information www.linear.com/LTC2972 CAPABILITY The CAPABILITY command provides a way for a host system to determine some key capabilities of the LTC2972. CAPABILITY Data Contents BIT(S) SYMBOL OPERATION b[7] Capability_pec Hard coded to 1 indicating Packet Error Checking is supported. Reading the Mfr_config_all_pec_en bit will indicate whether PEC is currently required. b[6:5] Capability_scl_max Hard coded to 01b indicating the maximum supported bus speed is 400kHz. b[4] Capability_smb_alert Hard coded to 1 indicating this device does have an ALERTB pin and does support the SMBus Alert Response Protocol. b[3:0] Reserved Always returns 0. PMBUS_REVISION PMBUS_REVISION Data Contents BIT(S) SYMBOL OPERATION b[7:0] PMBus_rev Reports the PMBus standard revision compliance. This is hard-coded to 0x11 for revision 1.1. MFR_SPECIAL_ID This register contains the manufacturer ID for the LTC2972. Always returns 0x0310. MFR_SPECIAL_LOT These paged registers contain information that identifies the user configuration that was programmed at the factory. Contact the factory to request a custom factory programmed user configuration and special lot number. IDENTIFICATION/INFORMATION COMMAND NAME CMD CODE DESCRIPTION TYPE PAGED FORMAT UNITS EEPROM DEFAULT VALUE REF PAGE CAPABILITY 0x19 Summary of PMBus optional communication protocols supported by this device. R Byte N Reg 0xB0 88 PMBUS_REVISION 0x98 PMBus revision supported by this device. Current revision is 1.1. R Byte N Reg 0x11 88 MFR_SPECIAL_ID 0xE7 Manufacturer code for identifying the LTC2972. R Word N Reg Y 784 0x0310 88 MFR_SPECIAL_LOT 0xE8 Customer dependent codes that identify the factory programmed user configuration stored in EEPROM. Contact factory for default value. R Byte Y Reg Y 88 MFR_INFO 0xB6 Manufacturer Specific Information R Word N Reg NA 89 PMBus COMMAND DESCRIPTION |
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