SPI Frame format of TPM1.2 Commands I have bought a TPM Chip: SLB9670.
It can be communicated via the SPI Bus.
What is the SPI frame format for firing TPM Commands with or
without arguments. I have read the TPM Main Specifications documents 
but haven't found much help. Can someone please help me with this.
What you are looking for could be in the Data Sheet (be sure to read 5.5) for the hardware layer, or/and the TCG PC Client Platform TPM Profile (PTP) Specification for SPI frame format.

You'll also need to find out what commands to send. The specs are there, and it is rumored that some have rewired their brain to actually use it (I'm not in). More.