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AM6421 bảng dữ liệu(PDF) 129 Page - Texas Instruments

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tên linh kiện AM6421
Giải thích chi tiết về linh kiện  AM64x Sitara Processors
PDF  237 Pages
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AM6421 bảng dữ liệu(HTML) 129 Page - Texas Instruments

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Figure 7-13. Clock Switching Characteristics
7.10.4 Clock Specifications
7.10.4.1 Input Clocks / Oscillators
Various external clock inputs/outputs are needed to drive the device. Summary of these input clock signals is as
follows:
• MCU_OSC0_XO/MCU_OSC0_XI — Еxternal main crystal interface pins connected to internal oscillator
which sources reference clock and provides reference clock to PLLs within MAIN domain.
• General purpose clock inputs
– MCU_EXT_REFCLK0 — optional external. Provides system clock input (MCU domain).
– EXT_REFCLK1 — optional external System clock input (MAIN domain). Optionally PLL2 (PER1) and
MCASP can be sourced by EXT_REFCLK1 (sourced externally).
– SERDES0_REFCLK0P/N — SerDes reference clock input for PCIe or Optional USB3.0 interfaces.
• External CPTS reference clock inputs
– CP_GEMAC_CPTS0_RFT_CLK — CPTS reference clock inputs for CP_GEMAC_CPTS0_RFT_CLK.
– CPTS_RFT_CLK — CPTS reference clock inputs for CPTS_RFT_CLK.
Figure 7-14 shows the external input clock sources and the output clocks to peripherals.
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AM6442, AM6441, AM6421
AM6412, AM6411
SPRSP56 – JANUARY 2021
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Product Folder Links: AM6442 AM6441 AM6421 AM6412 AM6411



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