82845MP datasheet(45/157 Pages) INTEL

부품명	82845MP

상세설명	Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)

PDF	157 Pages

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제조업체	INTEL [Intel Corporation]

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Intel

® 82845MP/82845MZ Chipset-Mobile (MCH-M)

250687-002

Datasheet

3.6.3.

CKESTR – Strength Control Register for CKE Signal Group

Address Offset:

31h

Default Value:

00h

Access:

Read Only, Read/Write

Size:

8 bits

This register controls the drive strength of the I/O buffers for the CKE 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

Descriptions

Reserved

6:4

CKE 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

Reserved.

2:0

CKE 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

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