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AMD Geode™ LX Processors Data Book 529
Security Block Register Descriptions
33234H
6.12.3.18 SB Random Number (SB_RANDOM_NUM)
6.12.3.19 SB Random Number Status (SB_RANDOM_NUM_STATUS)
SB Memory Offset 050h
Typ e RO
Reset Value 00000000h
SB_RANDOM_NUM Register Map
313029282726252423222120191817161514131211109876543210
RANDOM_NUM
SB Random Number Bit Descriptions
Bit Name Description
31:0 RANDOM_
NUM
Random Number. Returns a 32-bit random number. Check the TRNG_VALID bit (SB
Memory Offset 054h[0]) before reading this register. If the status bit (TRNG_VALID) is
1, the value in this register is ready for use. A 0 in the status bit indicates that the ran-
dom number is in the process of being generated.
SB Memory Offset 054h
Typ e RO
Reset Value 00000001h
SB_RANDOM_NUM_STATUS Register Map
313029282726252423222120191817161514131211109876543210
RSVD
TRNG_VALID
SB_RANDOM_NUM_STATUS Bit Descriptions
Bit Name Description
31:1 RSVD Reserved. Returns 0.
0 TRNG_VALID Random Number Valid. When 1, the random number is valid. When 0, the random
number is in the process of being generated.