3 arbitration (arb), 4 asynchronous smi (asmi), Arbitration (arb) – AMD Geode LX [email protected] User Manual

Page 62: 10000000_00000000h, Asynchronous smi (asmi), 00000000_00000000h

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62

AMD Geode™ LX Processors Data Book

GLIU Register Descriptions

33234H

4.2.2.3

Arbitration (ARB)

4.2.2.4

Asynchronous SMI (ASMI)

ASMI is a condensed version of the port ASMI signals. The MASK bits can be used to prevent a device from issuing an
ASMI. If the MASK = 1, the device’s ASMI is disabled.

MSR Address

GLIU0: 10000082h
GLIU1: 40000082h

Type

R/W

Reset Value

10000000_00000000h

ARB 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

Q

U

A

C

K_EN

PIPE_DIS

RSVD

DA

C

K

_

E

N

RSVD

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

RSVD

ARB Bit Descriptions

Bit

Name

Description

63

QUACK_EN

Quadruple Acknowledge Enabled. Allow four acknowledgements in a row before
advancing round-robin arbitration. Only applies when arbitrating matching priorities.

0: Disable.
1: Enable.

62

PIPE_DIS

Pipelined Arbitration Disabled.

0: Pipelined arbitration enabled and GLIU is not limited to one outstanding transaction.
1: Limit the entire GLIU to one outstanding transaction.

61

RSVD

Reserved.

60

DACK_EN

Double Acknowledge Enabled. Allow two acknowledgements in a row before advanc-
ing round-robin arbitration. Only applies when arbitrating matching priorities.

0: Disable.
1: Enable.

59:0

RSVD

Reserved.

MSR Address

GLIU0: 10000083h
GLIU1: 40000083h

Type

R/W

Reset Value

00000000_00000000h

ASMI 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 9

8

7

6

5

4

3

2

1

0

RSVD

AS

MI_

M

A

SK7

AS

MI_

M

A

SK6

AS

MI_

M

A

SK5

AS

MI_

M

A

SK4

AS

MI_

M

A

SK3

AS

MI_

M

A

SK2

AS

MI_

M

A

SK1

AS

MI_

M

A

SK0

ASMI_FLA

G

7

ASMI_FLA

G

6

ASMI_FLA

G

5

ASMI_FLA

G

4

ASMI_FLA

G

3

ASMI_FLA

G

2

ASMI_FLA

G

1

ASMI_FLA

G

0

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