SLLSEI0E July 2015 – July 2024 TUSB4020BI
PRODUCTION DATA
When the SMBus interface mode is enabled, the TUSB4020BI supports read block and write block protocols as a target-only SMBus device.
The TUSB4020BI target address is 1000 1xyz, where:
If the TUSB4020BI is addressed by a host using an unsupported protocol, the device does not respond. The TUSB4020BI waits indefinitely for configuration by the SMBus host and does not connect on the upstream port until the SMBus host indicates configuration is complete by clearing the CFG_ACTIVE bit.
For details on SMBus requirements, refer to the System Management Bus Specification.
During the SMBUS configuration the hub can draw an extra current, this extra current consumption ends as soon as the CFG_ACTIVE bit is cleared. For more information, see the Hub Input Supply Current section in this data sheet.