AM5728 datasheet(195/415 Pages) TI1

195 / 415 page

vdda_abe_per, vdda_ddr, vdda_debug,

vdda_dsp_eve, vdda_gmac_core,

vdda_gpu, vdda_iva, vdda_video,

vdda_mpu, vdda_osc

vdda_usb1, vdda_usb2, vdda_hdmi,

vdda_pcie, vdda_pcie0, vdda_pcie1,

vdda_sata, vdda_usb3

vdds_ddr2, vdds_ddr1,ddr1_vref0 ,

ddr2_vref0

(12)

vdd, vdd_rtc

(4)

vdd_mpu

vdd_gpu

vdd_dspeve

vdd_iva

vddshv8

vdda33v_usb1, vdda33v_usb2

porz

xi_osc0

SPRS85v_ELCH_05

Note 5

Note 6

Note 8

Note 7

Note 9

195

AM5729, AM5728, AM5726

www.ti.com

SPRS953F – DECEMBER 2015 – REVISED MAY 2019

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Product Folder Links: AM5729 AM5728 AM5726

Specifications

Figure 5-3. Power-Down Sequencing(10)(11)

(1) Grey shaded areas are windows where it is valid to ramp the voltage rail.

(2) Blue dashed lines are not valid windows but show alternate ramp possibilities based on the associated note.

(3) xi_osc0 can be turned off anytime after porz assertion and must be turned off before vdda_osc voltage rail is shutdown.

(4) If RTC-mode is not used then the following combinations are approved:

- vdda_rtc can be combined with vdds18v

- vdd_rtc can be combined with vdd

- vddshv5 can be combined with other 1.8V or 3.3V vddshv* rails

If combinations listed above are not followed then sequencing for these 3 voltage rails should follow the RTC mode timing requirements.

When using RTC mode timing:

- vdda_rtc falls coincident with, or later than, the 1.8V interface supplies (such as vdds18v).

- vdd_rtc falls coincident with vdd, or it may fall later. If falling later, it must fall before, or coincident with, the 1.8V interface supplies.

- vddshv5 falls coincident with the other vddshvn rails (of the same voltage) or it can fall about the same time as the 1.8V PHY supplies

(such as vdd_usb1).

(5) vdd_mpu, vdd_gpu, vdd_dspeve, vdd_iva can be ramped at the same time or can be staggered.

(6) vdd must ramp after or at the same time as vdd_mpu, vdd_gpu, vdd_dspeve and vdd_iva.

AM5728 Datasheet(PDF) 195 Page - Texas Instruments

AM5728 Datasheet(HTML) 195 Page - Texas Instruments

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