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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS320DM647 датащи(PDF) 164 Page - Texas Instruments |
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TMS320DM647 датащи(HTML) 164 Page - Texas Instruments |
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164 / 166 page  www.ti.com 6.23.2 JTAG Electrical Data/Timing TCK TDO TDI/TMS/TRST 1 2 3 4 2 TMS320DM647/TMS320DM648 Digital Media Processor SPRS372 – MAY 2007 Table 6-85. JTAGID Register Selection Bit Descriptions BIT NAME DESCRIPTION 31:28 VARIANT Variant (4-Bit) value. DM647/DM648 value: 0000. 27:12 PART NUMBER Part Number (16-Bit) value. DM647/DM648 value: 1011 0111 0111 1010. 11-1 MANUFACTURER Manufacturer (11-Bit) value. DM647/DM648 value: 0000 0010 111. 0 LSB LSB. This bit is read as a 1 for DM647/DM648. Table 6-86. Timing Requirements for JTAG Test Port (see Figure 6-48) -720 -900 NO. UNIT MIN MAX 1 tc(TCK) Cycle time, TCK 10 20 ns 3 tsu(TDIV-TCKH) Setup time, TDI/TMS/TRST valid before TCK high 2 ns 4 th(TCKH-TDIV) Hold time, TDI/TMS/TRST valid after TCK high 0 ns Table 6-87. Switching Characteristics Over Recommended Operating Conditions for JTAG Test Port (see Figure 6-48) -720 -900 NO. PARAMETER UNIT MIN MAX 0.25*tc(TC 2 td(TCKL-TDOV) Delay time, TCK low to TDO valid 0 ns K) Figure 6-48. JTAG Test-Port Timing 164 Peripheral Information and Electrical Specifications Submit Documentation Feedback |
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