| Products > Test Equipment |
| Sniffing the Rigol's internal I2C bus |
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| DoMaLo:
Hello everybody. I have MSO1104z, board version: 2.1.4, SV: 00.04.04.SP1. I took a dump using JLink Ultra + in JLink Commander and OpenOCD. Rigup 0.4.1 (MSO1000z) and 0.4.2 print "No keys" for both of dumps. What's can i do for unlocking my oscilloscope? |
| Gluk:
What do you think about resistors near 3k \$\Omega\$ near by FPGA and JTAG header in the :-BROKE MSO1074z? May be is it config divider? |
| DoMaLo:
I think that these are resistors for pull-up and pull-down JTAG chain. Because I was working with Actel FPGA and typical JTAG chain ProASIC3E Flash Family for FlashPro has resistors. Circuit that I used for my project in attachment. |
| Gluk:
Friends, yes! resistors near JTAG header set the config. They has title "hardware version" and "sp version". Upper resistor line is pull-up, lower - is pull-down. Do somebody want to play with this pull-up-down? $) |
| Gluk:
--- Quote --- the JTAG pullup/down resistors are there purely to enable robust JTAG data transfer. --- End quote --- This resistors not connected to the jtag pins! It connected to the pins near JTAG. And it has title! |
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