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Registered: ‎06-14-2015

XC6VLX240T Slave SelectMAP x32 readback

Hi, I want to implement readback though the SelectMAP x32 interface.

According to UG360 Table 7-1, I succeed reading back the IDCODE. But I can't readback the configuration frame according to Table 7-2.

Another question, from UG360 v3.8, XC6VLX240T IDCODE is 0x04250093, but on my custom board, XC6VLX240T
IDCODE is 0x84250093 ( from iMPACT 14.7).

My settings:
1. FPGA is XC6VLX240T;
2. XC6VLX240T SelectMAP was controlled by another FPGA(Artix-7);
3. M2~M0 is set to 110;
4. -g persist option is enabled and CONFIG CONFIG_MODE = S_SELECTMAP32+READBACK is written in UCF;
5. bitstream encryption is not used;
6. bitgen security setting doesn’t prohibit readback;
7. SelectMAP x32 IDCODE readback succeed;
8. SelectMAP x32 partial reconfiguration ( .bin file generated by PlanAhead 14.7 ) succeed;

Looking forward to any suggestions from you, thanks a lot !

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Registered: ‎02-12-2016

Hi,

 

I just found this post which is exactly one year old. Pure coincidence!

Did you finally manage to read through SelectMAP a configuration frame?

 

I am in a similar situation except that I am using SelectMap x8 interface and I have not been able even to read the IDCODE.

 

My settings are:

1. FPGA is XC5VFX70T;
2. SelectMAP is controlled by a uP using GPIOs;
3. M2~M0 is set to 110;
4. -g persist option is enabled and CONFIG CONFIG_MODE = S_SELECTMAP8+READBACK is written in UCF;
5. bitstream encryption is not used;
6. bitgen security setting doesn’t prohibit readback;
7. SelectMAP x8 IDCODE readback failed;

 

In my case, the expected IDCODE would be 0x632C6093 (we have read this value with iMPACT).

In fact, some bytes can be seen on the databus, but they don't appear when they should be there. Please take a look at the attachment (cap_12.1.png).

 

Does this make sense to you? Did you have similar problems when reading with SelectMAP x32?

 

 

Thanks and best regards,

Luis.

 

cap_12.1.png
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