AM6546 datasheet(152/284 Pages) TI

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DEVICE

MCU_PORz / PORz

MCU_SYSCLKOUT0

REFCLK0 P/N

SERDES0_REFCLK P/N

Selects Main PLL output divide-by-4

Optional external crystal interface pins connected to internal

oscillator which sources reference clock. Provides reference clock to

PLLs within MCU domain and MAIN domain. This high-frequency oscillator

is used to provide audio clock frequencies to MCASPs.

MCU_RESETz/ RESETz

MCU_OBSCLK0

Optional pins to provide reference clock input to the PLLs.

OSC1_XI

OSC1_XO

MCU Warm Reset Input / Device Warm Reset Input

BOOTMODE[18:00]

REFCLK1 P/N

OBSCLK0

SYSCLK0

MCU Power ON Reset / Device Power ON Reset

SPRSP08_CLOCK_01

There are 2 differential clock output pins to support 2 PCIe

devices

Boot Mode Configuration / devices select

SerDes reference clock input for PCIe or Optional USB3SS0 PHY

SERDES1_REFCLK P/N

MCU_CPTS0_RFT_CLK

MCU_EXT_REFCLK0

Optional for the DPI1 Port of DSS

VOUT1_EXTPCLKIN

Optional external low frequency crystal interface pins connected

to internal oscillator which provides a 32.768 kHz clock for

low power operation in deeper sleep modes.

WKUP_LFOSC0_XI

WKUP_LFOSC0_XO

Еxternal main crystal interface pins connected to

internal oscillator whichsources reference clock.

Provides reference clock to PLLs within WKUP and MAIN domain.

WKUP_OSC0_XI

WKUP_OSC0_XO

CPTS reference clock input for CPTS_RFT_CLK

CPTS0_RFT_CLK

TCK

EXT_REFCLK1

Optional external system clock input (MCU domain)

CPTS reference clock input for MCU_CPTS_RFT_CLK

Optional external System clock input (MAIN domain)

Observation clock output for MCU Domain clocks

Observation clock output for MAIN and MCU Domain clocks

JTAG Clock Input

MCU_BOOTMODE[09:00]

MCU Boot Mode system clock speed and fail-safe boot device

DDR_CK0P/DDR_CK0N

DDR Differential Clock outputs

DDR_CK1P/DDR_CK1N

Figure 7-14. Input Clocks Interface

For more information about Input clock interfaces, see the Clocking section in the device TRM.

AM6548, AM6528, AM6546, AM6526

SPRSP52B – DECEMBER 2019 – REVISED JUNE 2021

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