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Discussion Groups | Analog Devices DSPs | booting "my" 533 board
Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).
booting "my" 533 board - Author Unknown - Apr 12 16:55:00 2004
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Hello all! I've recently received a board I designed for software development using the 533... I included async SRAM, SPI EEPROM (blank) but no FLASH. I had intended to "boot" into boot mode 0 and grab control immediately using the JTAG interface however: nothing happens. The JTAG ICE reports that it cannot find anything on the JTAG port and the processor wants to pull about .5A at 3.3V. It gets warm, then I turn it off! Other particulars: Clock speed 27 MHz, verified. RTC xtal is connected, but RTC power is not. When set to boot from SPI, the SPI bus is active as expected, but no JTAG, still high power consumption Data and address buses are active, although they appear to be stuck in a loop of some sort Everything wired and double checked to comply with EE-68 (the JTAG ap note) I've asked our FAE and another apps Engineer at Analog what might be up and they don't answer. (yet...) What I'm wondering is if someone out there knows if the processor needs *something* boot code wise before it will go to JTAG or if the ICE grounding the ~EMU pin is what is supposed to put the processor into emulation mode? Having a dickens of a time. Any help is of course, greatly appreciated! Kim |
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Re: booting "my" 533 board - Jaime Andres Aranguren Cardona - Apr 13 0:58:00 2004
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Hello, Unfortunately I can't be of any help with this regards, but it seems to be a very interesting and illustrative one. So, please, when you have some progress, please share it with the group. I'm sure that many dsigners here would be interested on it (I include myself). Ah! I remember: there are some guys working on a "self-made" BF533 board. You can find it in blackfin.uclinux.org, plus lots of very interesting things, too. Have good times, JaaC --- wrote: > Hello all! > > I've recently received a board I designed for > software development using > the 533... I included async SRAM, SPI EEPROM (blank) > but no FLASH. I had > intended to "boot" into boot mode 0 and grab control > immediately using the > JTAG interface however: nothing happens. The JTAG > ICE reports that it > cannot find anything on the JTAG port and the > processor wants to pull > about .5A at 3.3V. It gets warm, then I turn it off! > > Other particulars: > > Clock speed 27 MHz, verified. RTC xtal is connected, > but RTC power is not. > When set to boot from SPI, the SPI bus is active as > expected, but no JTAG, > still high power consumption > Data and address buses are active, although they > appear to be stuck in a > loop of some sort > Everything wired and double checked to comply with > EE-68 (the JTAG ap > note) > > I've asked our FAE and another apps Engineer at > Analog what might be up > and they don't answer. (yet...) > > What I'm wondering is if someone out there knows if > the processor needs > *something* boot code wise before it will go to JTAG > or if the ICE > grounding the ~EMU pin is what is supposed to put > the processor into > emulation mode? Having a dickens of a time. > > Any help is of course, greatly appreciated! > > Kim ===== Jaime Andrés Aranguren Cardona __________________________________ |
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