Functional Description
17
cPCI-6525
3.6
TPM
The cPCI-6525 is equipped with the Infineon ATMEL AT97SC3204
Trusted Platform Module (TPM), a security controller with crypto-
graphic functionality that provides users a secure environment in
e-commerce transactions and Internet communications. The key
features provided by the TPM are:
X
Hardware hash accelerator for SHA-1 algorithm
X
Advanced Crypto Engine (ACE) for asymmetric key operations
(up to 2048-bit key length) to make hardware protection.
X
Tick counter to extend the time required to decipher the key
X
Over/Under-voltage detection to monitor the system stabil-
ity. If the voltage fluctuates dramatically, this function can
block the data transfer and lock the chip.
X
Low/High frequency sensor to detect the IC clock fre-
quency. If the frequency fluctuates dramatically, this func-
tion can block the data transfer and lock the chip.
X
Reset filter to filter reset signal in order to break the time set
by tick counter is received
X
Memory encryption to protect memory
X
Physical shield in the IC to protect the die from intruding or
hacking by matching the data transferred on the 2 layer
metal shield on the IC. If the data is not matched, the IC
may be blocked.
3.7
Battery
The cPCI-6525 is provided with a 3.0V “coin cell” lithium battery
for the Real Time Clock (RTC). The lithium battery must be
replaced with an identical battery or a battery type recommended
by the manufacturer.
