AM652X datasheet(149/299 Pages) TI1

149 / 299 page

Device

WKUP_LFOSC0_XO

WKUP_LFOSC0_XI

SPRSP08_PCB_CLK_OSC_NU3

VDDA_WKUP

WKUP_LFOSC0_XO

Time

VSS

VDDA_WKUP (min.)

VDD_WKUP (min.)

VSS

VDD_WKUP

149

AM6548, AM6528, AM6546

AM6526, AM6527

www.ti.com

SPRSP08E – NOVEMBER 2017 – REVISED OCTOBER 2018

Submit Documentation Feedback

Product Folder Links: AM6548 AM6528 AM6546 AM6526 AM6527

Specifications

(1) In order to meet the start-up time defined in this table, the crystal needs to be selected according to the following equation:

Tsu = K*Lm/ (Ro-ESR) + Δt

where Lm is crystal motional inductance, RO is the negative resistance of amplifier, ESR is the crystal Effective series resistance and K

is a constant which represents the initial conditions. Δt is the time amplifier takes to reach its bias point after power down is released.

Figure 5-23. WKUP_LFOSC0 Start-up Time

5.11.4.1.7 WKUP_LFOSC0 Not Used

Figure 5-24 shows the recommended oscillator connections when WKUP_LFOSC0 is not used.

WKUP_LFOSC0 may be a no-connect while the oscillator remains disabled since the internal pull-down

resistor is enabled by default.

Figure 5-24. WKUP_LFOSC0 Not Used

5.11.4.2 Output Clocks

The device provides several system clock outputs. Summary of these output clocks are as follows:

•

MCU_SYSCLKOUT0

–

SYSCLK0 of WKUP_PLLCTRL0 is divided by 6 and then sent out of the device as a LVCMOS

clock signal (MCU_SYSCLKOUT0). This signal can be used to test if the main chip clock is

functioning or not.

•

MCU_OBSCLK0

–

On the clock output MCU_OBSCLK0, oscillators and PLLs clocks can be observed for tests and

debug.

•

SYSCLKOUT0

–

SYSCLK0 from the MAIN_PLL controller is divided by 6 and then sent out of the device as a

LVCMOS clock signal (SYSCLKOUT0). This signal can be used to test if the main chip clock is

functioning or not.

AM652X Datasheet(PDF) 149 Page - Texas Instruments

AM652X Datasheet(HTML) 149 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 Descarga

Enlace URL