PrimeCell™ MultiPort Memory Controller (PL172) Technical Reference Manual A.3.4. External Bus Interface (EBI) signals

PrimeCell™ MultiPort Memory Controller (PL172) Technical Reference Manual

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A.3.4. External Bus Interface (EBI) signals

Table A.6 shows the EBI signals.

Table A.6. EBI signal descriptions

Name	Type	Source/ destination	Description
MPMCEBIGNT	Input	EBI	The EBI grant signal goes active HIGH when the EBI grants the external memory bus.
MPMCEBIBACKOFF	Input	EBI	The EBI backoff signal goes active HIGH when the EBI wants to remove the memory controller from the memory bus so that another memory controller can be granted the memory bus.
MPMCEBIREQ	Output	EBI	The EBI request signal goes active HIGH when the memory controller requires the memory bus.

Name

Type

Source/

destination

Description

MPMCEBIGNT

Input

EBI

The EBI grant signal goes active HIGH when the EBI grants the external memory bus.

MPMCEBIBACKOFF

Input

EBI

The EBI backoff signal goes active HIGH when the EBI wants to remove the memory controller from the memory bus so that another memory controller can be granted the memory bus.

MPMCEBIREQ

Output

EBI

The EBI request signal goes active HIGH when the memory controller requires the memory bus.

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