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Atmel AT97SC3204 LPC Interface [SUMMARY DATASHEET]

Atmel-5295ES-TPM-AT97SC3204-LPC-Interface-Datasheet-Summary-032013

2.

Block Diagram

The TPM includes a hardware random number generator, including a FIPS-approved Pseudo Random Number

Generator that is used for key generation and TCG protocol functions. The RNG is also available to the system to

generate random numbers that may be needed during normal operation.

The chip uses a dynamic internal memory management scheme to store multiple RSA keys. Other than the standard

TCG commands (TPM_FlushSpecific, TPM_Loadkey2), no system intervention is required to manage this internal key

cache.

The TPM is offered to OEM and ODM manufacturers as a turnkey solution, including the firmware integrated on the chip.

In addition, Atmel provides the necessary device driver software for integration into certain operating systems, along with

BIOS drivers. Atmel will also provide manufacturing support software for use by OEMs and ODMs during initialization

and verification of the TPM during board assembly.

Full documentation for TCG primitives can be found in the TCG TPM Main Specification, Parts 1 to 3, on the TCG Web

site located at https://www.trustedcomputinggroup.org. TPM features specific to PC Client platforms are specified in the

“TCG PC Client Specific TPM Interface Specification, Version 1.2”, also available on the TCG web site. Implementation

guidance for 32-bit PC platforms is outlined in the “TCG PC Client Specific Implementation Specification for Conventional

BIOS for TCG Version 1.2”, also available on the TCG website.

ROM

Program

EEPROM

Program

33MHz

LPC

Interface

GPIO

GPIO-Express-00

AVR

8-bit RISC

CPU

SRAM

EEPROM

Data

CRYPTO

Engine

RNG

Timer

Physical

Security

Circuitry