AX58100 datasheet(40/71 Pages) ASIX

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AX58100

EtherCAT Slave Controller

Power–up Sequence

Figure 4-2: Power-up Sequence Timing Diagram

Symbol

Parameter

Conditions

Min

Typ

Max Units

Trise3

3.3V power supply rise time.

From 0V to 3.3V.

Trise2

1.2V power supply rise time.

From 0V to 1.2V.

T23

VCCK rising to 1.2V to VCC3IO

rising to 3.3V interval.

Tclk

25MHz crystal oscillator start-up

time.

From VCC3IO rising to 3.3V to

clock stable of 25MHz crystal

oscillator.

Trst

POR asserted low level interval.

From VCCK rising to 1.2V to

POR going high.

Table 4-4: Power-up Sequence Timing Table

Note:

The above typical timing data is measured from AX58100 test board.

The Trst typical value is measured from AX58100 test board with the internal POR.

3.3V

Trise3

1.2V

Trise2

T23

Tclk

Trst

VCCK

/VCC12A_PLL

VCC3IO/VCC33A

RSTn

XSCI

…

AX58100 Datasheet(PDF) 40 Page - ASIX Electronics Corporation

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