RG82845M Intel, RG82845M Datasheet - Page 46

• Manufacturer Part Number: RG82845M
• Description: Chipset Memory Controller Hub Mobile
• Manufacturer: Intel

Intel
3.6.4.
46
®
82845MP/82845MZ Chipset-Mobile (MCH-M)
CSBSTR – Strength Control Register for CS# Signal Group
Address Offset:
Default Value:
Access:
Size:
This register controls the drive strength of the I/O buffers for the CS# signal group. This group has two
possible loadings depending on the width of SDRAM devices used in each Row of memory (x8 or x16).
The proper strength can be independently programmed for each configuration. The actual strength used
for each signal is determined by the DRAM Width register (offset 2Ch).
Bit
6:4
2:0
7
3
Reserved
Reserved
CS# x16 Strength Control: Sets drive strength as shown below:
000 = 0.75 X (default)
001 = 1.00 X
010 = 1.25 X
011 = 1.50 X
100 = 2.00 X
101 = 2.50 X
110 = 3.00 X
111 = 4.00 X
CS# x8 Strength Control: Sets drive strength as shown below:
000 = 0.75 X (default)
001 = 1.00 X
010 = 1.25 X
011 = 1.50 X
100 = 2.00 X
101 = 2.50 X
110 = 3.00 X
111 = 4.00 X
32h
00h
Read Only, Read/Write
8 bits
Datasheet
Descriptions
250687-002
R