CS5535 datasheet(233/555 Pages) NSC

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ACC Register Descriptions (Continued)

5.3.1

Standard GeodeLink Device MSRs

5.3.1.1

GeodeLink Device Capabilities MSR (ACC_GLD_MSR_CAP)

5.3.1.2

GeodeLink Device Master Configuration MSR (ACC_GLD_MSR_CONFIG)

MSR Address

51500000h

Type

Reset Value

00000000_002330xxh

ACC_GLD_MSR_CAP Register Map

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

RSVD

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9876543210

RSVD

DEV_ID

REV_ID

ACC_GLD_MSR_CAP Bit Descriptions

Bit

Name

Description

63:24

RSVD

Reserved. Reads return 0.

23:8

DEV_ID

Device ID. Identifies module (2330h).

7:0

REV_ID

Revision ID. Identifies module revision. See CS5535 I/O Companion Device Errata

document for value.

MSR Address

51500001h

Type

R/W

Reset Value

00000000_0000F000h

ACC_GLD_MSR_CONFIG Register Map

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

RSVD

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9876543210

RSVD

PRI

PID

ACC_GLD_MSR_CONFIG Bit Descriptions

Bit

Name

Description

63:20

RSVD

Reserved. Reads return 0.

PREFETCH_SEL

Select Flexible Prefetch Policy.

0: Fixed read prefetch policy is selected. (Default)

1: The ACC establishes prefetch policy.

18:16

FIX_PREFETCH

Fixed Read Prefetch Policy.

000: None. Each read takes a complete trip to memory.

001: Initial read 08 bytes. Read next 8 only when requested.

010: Initial read 16 bytes. Read next 16 only when requested.

011: Initial read 32 bytes. Read next 32 only when requested.

100: Initial read 32 bytes. Read next 32 when 16 bytes left.

101, 110, and 111: Reserved.

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