JAJSKX2A August 2019 – May 2021 TPS53676
PRODUCTION DATA
The SMB_CLK, SMB_DIO, and SMB_ALERT# pins are used for PMBus communication, an open-drain interface. TPS53676 is compatible with both 1.8-V and 3.3-V logic levels as shown in to Part I of the PMBus specification, revision v1.3.1. At least one external pull-up resistor is required for these pins. The 100 kHz, 400 kHz and 1 MHz modes of operation are supported. PMBus is a shared bus, where devices are assigned a communication address. Select the PMBus slave address as described in GUID-09389543-E6D9-4CB5-BCCC-76E27C0FBBEA.html#GUID-09389543-E6D9-4CB5-BCCC-76E27C0FBBEA. The controller device stretches clock pulses during operation when more processing time is required. Clock stretching support in the PMBus master is mandatory. See the GUID-84F0B14C-EC12-4B15-A98F-930F63F8EE22.html#GUID-84F0B14C-EC12-4B15-A98F-930F63F8EE22 section for more information about PMBus functionality.