com.xilinx.rapidwright.timing

Class SmallDelayModel

Object

com.xilinx.rapidwright.timing.SmallDelayModel

All Implemented Interfaces:

DelayModel

public class SmallDelayModel
extends Object
implements DelayModel

Implement DelayModel using as small memory as possible.

Constructor Summary

Constructors

Constructor and Description
SmallDelayModel(com.xilinx.rapidwright.timing.DelayModelSource src) constructor for SmallDelayModel class

Method Summary

Modifier and Type	Method and Description
short	getBELIndex(String belName) TODO - Revisit this is part of the DelayModel Gets the equivalent timing model index for this BEL
int	getEncodedConfigCode(String value) TODO - Revisit this as part of the DelayModel Gets the encoded config code for the value (belname:paramsetting)
Short	getIntraSiteDelay(SiteTypeEnum siteTypeName, String frBelPin, String toBelPin) Implement the method with the same signature defined in DelayModel interface.
short	getLogicDelay(short belIdx, String frBelPin, String toBelPin) Implement the method with the same signature defined in DelayModel interface.
short	getLogicDelay(short belIdx, String frBelPin, String toBelPin, int encodedConfig) Implement the method with the same signature defined in DelayModel interface.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SmallDelayModel

public SmallDelayModel(com.xilinx.rapidwright.timing.DelayModelSource src)

constructor for SmallDelayModel class

Parameters:

src - specify the source for the delay model

Method Detail

getEncodedConfigCode

public int getEncodedConfigCode(String value)

Description copied from interface: DelayModel

TODO - Revisit this as part of the DelayModel Gets the encoded config code for the value (belname:paramsetting)

Specified by:

getEncodedConfigCode in interface DelayModel

Returns:

The encoded value

getBELIndex

public short getBELIndex(String belName)

Description copied from interface: DelayModel

TODO - Revisit this is part of the DelayModel Gets the equivalent timing model index for this BEL

Specified by:

getBELIndex in interface DelayModel

Parameters:

belName - Name of the BEL

Returns:

The unique BEL timing model index

getIntraSiteDelay

public Short getIntraSiteDelay(SiteTypeEnum siteTypeName,
                               String frBelPin,
                               String toBelPin)

Implement the method with the same signature defined in DelayModel interface.

Specified by:

getIntraSiteDelay in interface DelayModel

Parameters:

siteTypeName - The name of the site type, such as SLICEL and SLICEM.

frBelPin - The bel pin which is the driver of the connection. Thus, it must be a bel output pin. The bel name must be included, ie., AFF2/D. An input site pin is considered a valid frBelPin.

toBelPin - The bel pin which is the sink of the connection (a bel input pin, or an output site pin).

Returns:

Intra-site delay in ps. Return -1 if the connection does not exist.

getLogicDelay

public short getLogicDelay(short belIdx,
                           String frBelPin,
                           String toBelPin)

Implement the method with the same signature defined in DelayModel interface.

Specified by:

getLogicDelay in interface DelayModel

Parameters:

belIdx - The unique BEL timing model index, see DelayModel.getBELIndex(String).

frBelPin - An input bel pin. It must NOT include bel name.

toBelPin - An output bel pin. It must NOT include bel name.

Returns:

Logic delay in ps. Return -1 if the connection does not exist.

getLogicDelay

public short getLogicDelay(short belIdx,
                           String frBelPin,
                           String toBelPin,
                           int encodedConfig)

Implement the method with the same signature defined in DelayModel interface.

Specified by:

getLogicDelay in interface DelayModel

Parameters:

belIdx - The unique BEL timing model index, see DelayModel.getBELIndex(String).

frBelPin - An input bel pin. It must NOT include bel name.

toBelPin - An output bel pin. It must NOT include bel name.

encodedConfig - A list of config_name:value of the bel, ie., {CYINIT_BOT:GND, CARRY_TYPE:SINGLE_CY8}. What is the possible config_name and its value? Ones need to look at the logic delay files used for DelayModelSource_text to find that out. Where to get the config's value from the design? There is no uniform way to find the value. It is to determined per case. For example, some configs of carry8 is from bel, while some from cell.

Returns:

Logic delay in ps. Return -1 if the connection does not exist.