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DSM2190F4V データシート(PDF) 41 Page - STMicroelectronics |
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DSM2190F4V データシート(HTML) 41 Page - STMicroelectronics |
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41 / 61 page  41/61 DSM2190F4 from multiple DSM2190F4V devices and a wired- OR connection of TERR signals from those same devices. This is useful when several devices are “chained” together in a JTAG environment. PSD- soft Express puts TSTAT and TERR signals to open-drain by default. Click on 'Properties' in the JTAG-ISP window of PSDsoft Express to change to standard CMOS push-pull. It is recommended to use 10 k Ω pull-up resistors to VCC on all JTAG- ISP signals on your circuit board. Initial Delivery State When delivered from ST, the device has all bits in the memory and PLDs erased to logic 1. The DSM Configuration Register bits are set to 0. The code, configuration, and PLD logic are loaded using the programming procedure. The four basic JTAG ISP signals (TCK, TMS, TDI, TDO) are ready for ISP function. |
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