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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMX7ULPIECB2 датащи(PDF) 30 Page - NXP Semiconductors |
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IMX7ULPIECB2 датащи(HTML) 30 Page - NXP Semiconductors |
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30 / 112 page  Table 3. JTAG device identification register information Silicon Revision Part Identification Number (PIN) Part Revision Number (PRN) A0 10'b0011100001 4’b0000 B0 10'b0011100001 4’b0001 B1 10'b0011100001 4’b0010 B2 10'b0011100001 4’b0011 The contents of the JTAD ID register are also mirrored in a SIM register called JTAG_ID_REG (address 0x410A_308C). 5.3 Oscillators and PLLs 5.3.1 System oscillator (SYS OSC) The system oscillator (SYS OSC) is a crystal oscillator. The SYS OSC, in conjunction with an external crystal or resonator, generates a reference clock for this chip. It also provides the option for an external input clock to EXTAL signal directly. 5.3.2 Real-Time Clock Oscillator (RTC OSC) The RTC OSC module provides the clock source for the Real-Time Clock module. The RTC OSC module, in conjunction with an external crystal, generates a 32.678 kHz reference clock for the RTC. 5.3.3 USB PLL The USB PLL is embedded in the USB transceiver block. This PLL allows an exact 480 MHz to be generated from a supported reference clock of 24 MHz. The output of this PLL is primarily used for USB operations. The USB PLL clock is also made available as a clock source for other peripherals in the SoC. System control modules 30 i.MX 7ULP Applications Processor—Industrial, Rev. 1, 07/2021 NXP Semiconductors |
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