JAJSIA2B December 2019 – February 2022 TPS6594-Q1
PRODUCTION DATA
An SPMI interface in the TPS6594-Q1 device is utilized to communicate the power state transition across multiple PMICs in the system. The SPMI interface contains a controller block and a target block. There is only one PMIC, which is the primary PMIC, that acts as SPMI controller in any given system. As the SPMI controller it initiates SPMI interface BIST and executes periodic checking of the SPMI bus health.
The primary PMIC has a controller-ID (CID)= 1. The target block of SPMI interfac in the primary PMIC device is activated as well, in order to receive SPMI communication messages from the secondary PMICs. The primary PMIC has a target-ID (TID) = 0101.
Each secondary PMIC on the SPMI network only has the target block of its SPMI interface enabled. There cannot be more than five secondary PMICs in the system. The target-IDs (TIDs) for the five secondary PMICs are:
All devices in the SPMI network listen to the group target-ID (GTID): 1111. This address is used to communicate all power state transition information in broadcast mode to all connected devices on the SPMI bus.