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TUSB8042AI Folha de dados(PDF) 23 Page - Texas Instruments |
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TUSB8042AI Folha de dados(HTML) 23 Page - Texas Instruments |
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23 / 55 page ![]() 23 TUSB8042A www.ti.com SLLSF93 – JUNE 2019 Product Folder Links: TUSB8042A Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated 8.4.4 SMBus Slave Operation When the SMBus interface mode is enabled, the TUSB8042A supports read block and write block protocols as a slave-only SMBus device. The TUSB8042A slave address is 1000 1xyz, where: • x is the state of GANGED/SMBA2/HS_UP pin at reset, • y is the state of FULLPWRMGMTz/SMBA1/SS_UP pin at reset, and • z is the read/write bit; 1 = read access, 0 = write access. For details on SMBus requirements, refer to the System Management Bus Specification. NOTE If the TUSB8042A is addressed by a host using an unsupported protocol it does not respond. The TUSB8042A waits indefinitely for configuration by the SMBus host and doesnot connect on the upstream port until the SMBus host indicates configuration is complete by clearing the CFG_ACTIVE bit. |
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