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About ADV8005 IBIS model

Question asked by Kikka2 on Feb 22, 2018
Latest reply on Feb 22, 2018 by PoornimaSubramani

Hello.

 

Your IBIS model of ADV8005 shows as below.

I think that the registers related to MEM_DQS/B and MEM_CK/B are  DQS_DRV_STR[7:0](0x1A9E) and CK_DRV_STR[7:0](0x1A9D).

 

But IBIS says the default is 55H, UG-711 says the default of DQS_DRV_STR and  CK_DRV_STR is 00H.

Which is correct?

 

=from IBIS model=

[Model Selector] MEM_DQS
MEM_DQS_drv1 Digital O, push-pull, drive strength 01 (Default - 55H)
MEM_DQS_drv0 Digital O, push-pull, drive strength 00 (00H)
MEM_DQS_drv2 Digital O, push-pull, drive strength 10 (AAH)
MEM_DQS_drv3 Digital O, push-pull, drive strength 11 (FFH)

[Model Selector] MEM_DQSB
MEM_DQSB_drv1 Digital O, push-pull, drive strength 01 (Default - 55H)
MEM_DQSB_drv0 Digital O, push-pull, drive strength 00 (00H)
MEM_DQSB_drv2 Digital O, push-pull, drive strength 10 (AAH)
MEM_DQSB_drv3 Digital O, push-pull, drive strength 11 (FFH)

[Model Selector] MEM_CKB
MEM_CKB_drv2 Digital O, push-pull, drive strength 10 (Default - AAH)
MEM_CKB_drv1 Digital O, push-pull, drive strength 01 (55H)
MEM_CKB_drv0 Digital O, push-pull, drive strength 00 (00H)
MEM_CKB_drv3 Digital O, push-pull, drive strength 11 (FFH)

[Model Selector] MEM_CK
MEM_CK_drv2 Digital O, push-pull, drive strength 10 (Default - AAH)
MEM_CK_drv1 Digital O, push-pull, drive strength 01 (55H)
MEM_CK_drv0 Digital O, push-pull, drive strength 00 (00H)
MEM_CK_drv3 Digital O, push-pull, drive strength 11 (FFH)

 

 

Best regards

Kikka

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