3 Device Features

The TA101 device supports several broad features, including secure boot (host code authentication), MAC generation, secure key and certificate storage and management.

Public information stored within the protected memory, such as code digests, certificate validation status, public keys, etc., can only be modified when properly authorized by using the specified protocols in this data sheet.

The TA101 is powered by an internal microcontroller running dedicated software loaded into the ROM and nonvolatile memory during chip manufacture. Nonvolatile memory is used for certificate storage and secret/private key storage. There is no direct access to the memories from the external pins of the device and there is no available programming or debug interface.

The block diagram of the TA101 shows the major architectural features of the device.