Beware of counterfeit or "generic" SPI programmers marketed as TPM readers. Only the genuine RPC8394 includes the proprietary TPM state machine logic required to interpret TCG structures correctly.
At its core, the RPC8394 is a dedicated hardware interface and debugging tool designed to communicate directly with TPM chips, specifically those operating on the (often referred to as TPM 1.2 with specific vendor extensions, though the 1.6 label typically denotes a proprietary or legacy standard found in specific enterprise hardware). RPC8394 1.6 TPM reader
Verify with actual datasheet – this is a generic SPI TPM interface. Beware of counterfeit or "generic" SPI programmers marketed
Update Your Security Processor (TPM) Firmware - Microsoft Support RPC8394 1.6 TPM reader