Intel BX80605I7870 Data Sheet - Page 67

Device, Function: 0, Offset, Access as a Dword

Page 67 highlights

Register Description Device: 4, 5, 6 Function: 0 Offset: 80h Access as a Dword 18:15 RW 0 14:11 RW 0 10:7 RW 0 tddRdTWr. Minimum delay between Read followed by a Write to different DIMMs. 0000 = 2 0001 = 3 0010 = 4 0011 = 5 0100 = 6 0101 = 7 0110 = 8 0111 = 9 1000 = 10 1001 = 11 1010 = 12 1011 = 13 1100 = 14 tdrRdTWr. Minimum delay between Read followed by a write to different ranks on the same DIMM. 0000 = 2 0001 = 3 0010 = 4 0011 = 5 0100 = 6 0101 = 7 0110 = 8 0111 = 9 1000 = 10 1001 = 11 1010 = 12 1011 = 13 1100 = 14 tsrRdTWr. Minimum delay between Read followed by a write to the same rank. 0000 = RSVD 0001 = RSVD 0010 = RSVD 0011 = 5 0100 = 6 0101 = 7 0110 = 8 0111 = 9 1000 = 10 1001 = 11 1010 = 12 1011 = 13 1100 = 14 Datasheet 67

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Datasheet
67
Register Description
18:15
RW
0
tddRdTWr.
Minimum delay between Read followed by a Write to different DIMMs.
0000 = 2
0001 = 3
0010 = 4
0011 = 5
0100 = 6
0101 = 7
0110 = 8
0111 = 9
1000 = 10
1001 = 11
1010 = 12
1011 = 13
1100 = 14
14:11
RW
0
tdrRdTWr.
Minimum delay between Read followed by a write to different ranks on the
same DIMM.
0000 = 2
0001 = 3
0010 = 4
0011 = 5
0100 = 6
0101 = 7
0110 = 8
0111 = 9
1000 = 10
1001 = 11
1010 = 12
1011 = 13
1100 = 14
10:7
RW
0
tsrRdTWr.
Minimum delay between Read followed by a write to the same rank.
0000 = RSVD
0001 = RSVD
0010 = RSVD
0011 = 5
0100 = 6
0101 = 7
0110 = 8
0111 = 9
1000 = 10
1001 = 11
1010 = 12
1011 = 13
1100 = 14
Device:
4, 5, 6
Function: 0
Offset:
80h
Access as a Dword