Field Name
Description
Bits
Default
HASH1_AG[1:0]
Hash Core 1 algorithm.
This field is only valid when Hash_OP[3:0] = 0010.
In this case, Hash Core 0 will calculate the file hash
while Hash Core 1 calculates the slice hash.
For all other operations, Hash Core 1 is only used
for real time verification and must be set to the
same value as Hash Core 0.
3:2
0
00 SHA-1
01 SHA-256
10 MD5
11 Reserved
HASH0_AG[1:0]
Hash Core 0 algorithm.
00 SHA-1
1:0
0
01 SHA-256
10 MD5
11 Reserved
3.1.2.6
Desc_cmd_pad
This descriptor defines the pad engine related parameters. Desc_cmd_pad is 8 bytes for
either 32-bit or 64-bit addressing modes.
PAD_Source_Count[23:0]
PAD_Header_Count[7:0]
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
Next_Head[7:0]
Reserved
PAD_Len[7:0]
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
820x – Data Sheet, DS-0157-D
Page57
Hifn Confidential
EXAR [ EXAR CORPORATION ]
