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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM0020 датащи(PDF) 46 Page - STMicroelectronics |
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PM0020 датащи(HTML) 46 Page - STMicroelectronics |
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46 / 87 page  JTAG sequence PM00020 46/87 5.2 TURBO-PROG-ENABLE Note: While executing this Turbo Mode instruction, Turbo Mode is not active yet. As such, JTCK needs to be 10X slower than the system clock. Since the system clock can be anywhere between 4 MHz to 25 MHz, it is best to run JTCK at 400 kHz or below. Once Turbo Mode is active, JTCK can be at a much faster frequency (i.e. 10 MHz). Once Turbo Mode is activated, it can only be disabled by a power down or by taking JTRSTn to low. This instruction is NOT IEEE 1149.1 JTAG Standard compliant. There is no direct status check for the success status. 5.3 IDCODE 5.4 ISC-CONFIGURATION Table 13. TURBO-PROG-ENABLE sequence Step TAP activity Comment 0 Run-Test/Idle Start 1IR-Scan Load Turbo Mode Instruction: "01101 1111 11111111" 2 Run-Test/Idle End Table 14. IDCODE sequence Step TAP Activity Comment 0 Run-Test/Idle Start 1 IR-Scan Load 5-bit BYPASS + IDCODE 2 DR-Scan Shift out 1-bit BYPASS + IDCODE 3 Run-Test/Idle End Table 15. ISC-CONFIGURATION sequence Step TAP Activity Comment 0 Run-Test/Idle Start 1 IR-Scan Load 5-bit BYPASS + ISC-CONFIGURATION 2 DR-Scan Shift out 1-bit BYPASS + sector protect, CSx, LVD Threshold and Lock OTP information 3 Run-Test/Idle End |
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