topic IMX7 IBIS MODEL for SDIO in i.MX Processors

IMX7 IBIS MODEL for SDIO

frankyhsu — Fri, 17 Feb 2017 10:19:57 GMT

We are requested to do the SDIO SI simulation, I have the IBIS model but it seems to be used for LPDDR3 simulation. Could you provide the model for SDIO? We sue the SDIO2(HS200) for WiFi and SDIO3 for eMMC v5.0.

Also, how do we know the default drive strength setting? In the reference guideline seems to show the DSE Xx value but not a resistance value. We need the exact value for it.

Please kindly to reply this.

Thanks a lot.

Franky.

Re: IMX7 IBIS MODEL for SDIO

igorpadykov — Fri, 17 Feb 2017 11:15:04 GMT

Hi Franky

ibis model description can be found on

IBIS Model (2)
http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-processors/i.mx-7-processors/i.mx-7dual-processors-heterogeneous-processing-with-dual-arm-cortex-a7-cores-and-cortex-m4-core:i.MX7D?tab=Design_Tools_Tab

and it is described in Hardware Development Guide for i.MX7Dual and

7Solo Applications Processors Table 27. IBIS Model naming convention, as:

Example 2 : B04 SD1_DATA0 MPBI
http://www.nxp.com/files/32bit/doc/user_guide/IMX7DSHDG.pdf

So model "MPBI" can be found in ibis file : "[Model Selector] MPBI "

here also can be found records like: M0_PBI_02_F_NA_PBI - 2mA drive strength..

4,8,12 12mA drive strength, this corresponds to DSE field IOMUXC_SW_PAD_CTL_PAD_SD1_DATA0

00 DSE_0_X1 — X1
01 DSE_1_X4 — X4
10 DSE_2_X2 — X2
11 DSE_3_X6 — X6

please check sect.8.2.7.255 SW_PAD_CTL_PAD_SD1_DATA0 SW PAD

i.MX7D Reference Manual

http://cache.nxp.com/files/32bit/doc/ref_manual/IMX7DRM.pdf

Best regards
igor
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Re: IMX7 IBIS MODEL for SDIO

frankyhsu — Fri, 17 Feb 2017 12:48:06 GMT

Hi Igor,

00 DSE_0_X1 — X1 ->2mA
01 DSE_1_X4 — X4 ->4mA
10 DSE_2_X2 — X2 ->8mA
11 DSE_3_X6 — X6 ->12mA?

Is it?

Re: IMX7 IBIS MODEL for SDIO

igorpadykov — Tue, 14 Mar 2017 23:26:15 GMT

Hi Franky

provided internally more details as follows

Best regards
igor