VF5xx/ FB_CS5?

[soichiyamamoto]

Hi

Can I use FB_CS5?

FB_CSPMCR field has FB_CS5.("Vybrid Reference Manual, Rev. 5, 07/2013",P1343)

But  "Figure 8-13. FlexBus control signal multiplexing" not has FB_CS5.("Vybrid Reference Manual, Rev. 5, 07/2013",P571)

Best regards,

yamamoto

[juangutierrez]

karinavalencia, can you mark Naoum reply as correct. We got confirmation from Design Team that Vybrid only have 4 FB_CS and not 5 as stated in RM. RM will be updated accordingly.

[karina_valencia]

Done

[soichiyamamoto]

Dear Naoum Gitnik.,

Is FB_CS5 of Flexbus an existing port in VF5xx?

Best Regards,

soichi yamamoto

[naoumgitnik]

Dear Soichi,

• It does exist among the GROUP3 controls (thanks for catching this typo - I already requested to correct the documentation).
• The code it is mentioned in in this context can be found e.g. here - http://compass.freescale.net/livelink/livelink/226480024/vybrid_sample_code.zip?func=doc.Fetch&nodei....
  

Regards, Naoum Gitnik.

[soichiyamamoto]

Dear Naoum,

Thank you for reply.

Where are these(FB_CSAR5,FB_CSMR5,FB_CSCR5 for FB_CS5) registers?

A reference manual does not have mention of this register.

Best Regards,

Soichi

[juangutierrez]

Hi

This part of the documentation is a mess :smileysad:

There are 5 independent, user-programmable chip-select signals (FB_CS0 –FB_CS4)

However, the nomenclature used in the Multiplexing Control Register FB_CSPMCR refers the FB_CSn signals as if the counting started from 1 instead of 0 (FB_CS1 –FB_CS5). On the other hand the nomenclature for the Address, Mask and Control Registers goes from 0 to 4

So under this scheme the  mapping is

Group 1 --> FB_CS1 --> FB_CSAR0, FB_CSMR0, FB_CSCR0

Group 2 --> FB_CS4 --> FB_CSAR3, FB_CSMR3, FB_CSCR3

Group 3 --> FB_CS5 --> FB_CSAR4, FB_CSMR4, FB_CSCR4

Group 4 --> FB_CS2 --> FB_CSAR1, FB_CSMR1, FB_CSCR1

Group 5 --> FB_CS3 --> FB_CSAR2, FB_CSMR2, FB_CSCR2

[soichiyamamoto]

Dear Juan Antonio Gutierrez Rosas,

Thank you for reply.

> However, the nomenclature used in the Multiplexing Control Register FB_CSPMCR refers the FB_CSn signals as if the counting started from 1 instead of 0 (FB_CS1 –FB_CS5). On the other hand the nomenclature for the Address, Mask and Control Registers goes from 0 to 4

Does it mean that FB_CS0 does not exist?

If this is not the case, please give me Regster(FB_CSARx, FB_CSMRx, FB_CSCRx) of FB_CS0.

Best Regards,

soichi yamamoto

[juangutierrez]

It means there are only 5 FB_CSn, and there is no convention if start from 0 or from 1.

The address, mask and ctrl register for the first FB_CS will be

FB_CSAR0, FB_CSMR0, FB_CSCR0

which match the signal FB_CS MUXed by GROUP 1  (which in RM is called FB_CS1 but the correct name should be FB_CS0)

[soichiyamamoto]

Dear Juan Antonio Gutierrez Rosas,

Thank you for reply.

CS1, specifications of CS0 exist as follows.

Pinouts(VF6xx, VF5xx, VF3xx Data Sheet, Rev. 5, 05/2013. Freescale Semiconductor,)

PTB25→FB_CS1_b

PTB26→FB_CS0_b

Is this an error, too?

Best regards,

soichi yamamoto

[juangutierrez]

No, FB_CS0 does exist.

Just keep in mind there are only 5 FB_CS, Sometimes they are referred from the first one to the fifth one as FB_CS0 to FB_CS4,

but others they are referred from the first one to the fifth one as FB_CS1 to FB_CS5.

In this case

PTB26→FB_CS0_b  is the one in --> MUX Group 1  and its corresponding registers are --> FB_CSAR0, FB_CSMR0, FB_CSCR0

[naoumgitnik · Accepted solution]

Hello Everybody,

As per the latest information form the Design team, we do not support CS corresponding to FB_CSCR4 - only have four CSs in Vybrid.

We will have to fix the documentation.

Regards, Naoum Gitnik.

juangutierrez

[naoumgitnik]

Dear Soichi,

The SW support person will check how these controls are described in our code mentioned earlier.

Regards, Naoum Gitnik.

[karina_valencia]

juangutierrez can you help on this case?

[naoumgitnik]

Dear Yamamoto,

Before we proceed further, did you have a chance to look at how what you are doing in your code is handled in our SW posted on the public Vybrid web page (e.g. VF6xx Product Summary Page http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=VF6xx&fpsp=1&tab=Design_Tools_Tab, specifically the Run-time Software), please?

The reason for referring you to our code is that it is:

• tested with our hardware and works for sure,
• well commented and easy to understand and copy.

Regards, Naoum Gitnik.