T1022 Hardcoded RCW codewarrior Error

[mohsenhaghighat]

Hello,

we design a custom board with T1022 processor and the flash is blank. So we use hardcoded RCW. we connect codewarrior TAP to jtag and try to connecting to CPU.

But it make a error :

"Error: Connect Failed.
Failed to correctly configure the JTAG chain(CCSProtocolPlugin)
Error: Connect Failed."

The switch setting for RCW_SRC is (010011110) , where 0 means ON.

what can I do about it?

[ufedor]

> where 0 means ON.

Please provide corresponding measured levels of the RCW_SRC signals.

[mohsenhaghighat]

I measure the voltage of RCW_SRC_SIGNALs. when switch is on the voltage is 0 volt and when switch is off the is 0.7 volt.

[ufedor]

> when switch is on the voltage is 0 volt 

This definitely is incorrect.

Please check that all power supply voltages are properly applied.

[mohsenhaghighat]

when switch is ON, How much is voltage?

Thanks

[ufedor]

The cfg_rcw_src signals have internal pull-up resistors - refer to the processor's Data Sheet, Table 1. Pinout list by bus:

"4. This pin is a reset configuration pin. It has a weak (~20 kΩ) internal pull-up P-FET that is enabled only when the processor is in its reset state."

[dusanferbas]

We have similar problems. We designed a board with LS1020A and added pull downs, assuming pull-ups are inside the uP chip. We have a problem with IFC_AD10 when we are booting from SD card. In this case the signal should be high, but we measured 1.2 V, which looks like high, but with 1.8 V logic. Our IFC is designed with 3.3 V logic, which probably qualifies the voltage as low. The solution was to add a 4k7 pull-up.
Does anyone else have such a problem?

We use the MIC826 for a reset, which has a 200 ms period with PORESET- low.
I found the configuration should reside on the IFC bus for 4 clocks after PORESET- goes high.
This seems to be ok.

[mohsenhaghighat]

Thanks Fedor and Dusan

I add pull up resistors for RCW source near the switch. when siwtch is On the level of voltage is 0.2 Volt and when Switch is off the level of voltage is 1.6 Volt. In this state , some times after reset the PORESET, The HRESET signals still be low(0 volt) and some times it is be high (1.8 volt). when I connect with JTAG when RCW source set to hardcoded, I see two error

1 " Error measuring IR length" 

2 "Failed to correctly configure the JTAG chain"

what can I do for this error?

thanks.

[ufedor]

> I add pull up resistors for RCW source near the switch.

This is incorrect.

It is required to determine why internal pull-up P-FETs do not work properly.

[mohsenhaghighat]

Do these pull-up P-FETs working with Vcore voltage or OVDd voltage? 

[ufedor]

With OVDD supply voltage.

[mohsenhaghighat]

I make a mistake when I meaure the RCW source voltage level. I do not reset the board when I measure these.

when board is not reset (HRESET is high) the level voltage of RCW_src is 0 volt (On) and 0.6 volt (off).

But when I reset the board with (PORESET), the voltage level of RCW_src is 0.2 volt(On) and 1.7 volt(off). 

So I delete the pull up resistor near the RCW_src. Still the board is not working