AM67 datasheet(112/237 Pages) TI

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6.9.4 Clock Specifications

6.9.4.1 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 — external main crystal interface pins connected to the internal high-

frequency oscillator (MCU_HFOSC0), which is the default clock source for internal reference clock

HFOSC0_CLKOUT.

• WKUP_LFOSC0_XO/WKUP_LFOSC0_XI — external crystal interface pins connected to internal low-

frequency oscillator (WKUP_LFOSC0), which sources optional 32768Hz reference clock.

• General purpose clock inputs

– MCU_EXT_REFCLK0 — optional external system clock.

– EXT_REFCLK1 — optional external system clock.

• External CPTS reference clock input

– CP_GEMAC_CPTS0_RFT_CLK — optional reference clock input for CPTS_RFT_CLK.

• External audio reference clock inputs/outputs

– AUDIO_EXT_REFCLK[1:0] — optional McASP high-frequency input clocks when configured to operate as

an input.

For more information about Input clock interfaces, see Clocking section in Device Configuration chapter in the

device TRM.

AM67, AM67A

SPRSPA3A – MARCH 2024 – REVISED SEPTEMBER 2024

www.ti.com

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