AM6421 datasheet(130/237 Pages) TI

130 / 237 page

DEVICE

MCU_SYSCLKOUT0

Selects Main PLL output divide-by-6

External main crystal interface pins connected to internal oscillator

which provides reference clock to PLLs within MCU domain

and MAIN domain.

Optional pins to provide reference clock input to the PLLs.

MCU_OSC0_XI

MCU_OSC0_XO

SYSCLKOUT0

J7ES_CLOCK_01

TCK

MCU_EXT_REFCLK0 / EXT_REFCLK1

Optional external System clock inputs -

(MAIN domain)

(MCU domain) /

JTAG Clock Input

CLKOUT

CPTS reference clock input for

CP_GEMAC_CPTS0_RFT_CLK / MCU_CPTS_RFT_CLK

CP_GEMAC_CPTS0_RFT_CLK /

CPTS0_RFT_CLK

MCU_PORz

MCU_RESETz

MCU Warm Reset Input / Device Warm Reset Input

BOOTMODE[15:00]

MCU Power ON Reset / Device Power ON Reset

Boot Mode Configuration / devices select

DDR0_CK0/DDR0_CK0_n

DDR Differential Clock outputs

SERDES0_REFCLK0P/N

SerDes reference clock input for PCIe or Optional USB3.0 interfaces

MCU_OBSCLK0 / OBSCLK0

Observation clock outputs for

MAIN Domain clocks

MCU Domain clock /

Reference clock output

Figure 7-14. Input Clocks Interface

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

device TRM.

7.10.4.1.1 MCU_OSC0 Internal Oscillator Clock Source

Figure 7-15 shows the recommended crystal circuit. All discrete components used to implement the oscillator

circuit should be placed as close as possible to the MCU_OSC0_XI and MCU_OSC0_XO pins.

Device

MCU_OSC0_XO

MCU_OSC0_XI

Crystal

AM65x_MCU_OSC_INT_01

PCB Ground

Figure 7-15. MCU_OSC0 Crystal Implementation

AM6442, AM6441, AM6421

AM6412, AM6411

SPRSP56 – JANUARY 2021

www.ti.com

130

Submit Document Feedback

Product Folder Links: AM6442 AM6441 AM6421 AM6412 AM6411

AM6421 Datasheet(PDF) 130 Page - Texas Instruments

AM6421 Datasheet(HTML) 130 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL