Справочник Пользователя для AMD LX 800@0.9W
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
Type
Type
RO
Reset Value
00000000h
SB_RANDOM_NUM Register Map
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RANDOM_NUM
SB Random Number Bit Descriptions
Bit
Name
Description
31:0
RANDOM_
NUM
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.
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
Type
Type
RO
Reset Value
00000001h
SB_RANDOM_NUM_STATUS Register Map
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RSVD
TRNG_V
ALID
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.
number is in the process of being generated.