VSC8541XMV-05 datasheet(86/101 Pages) MICROCHIP

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Electrical Specifications

VMDS-10513 VSC8541-02 Datasheet Revision 4.1

Figure 34 •

Serial Management Interface Timing

5.2.15

Reset Timing

This section contains the AC specifications that apply to device reset functionality. The signal applied to

the NRESET input must comply with the specifications listed in the following table.

5.3

Operating Conditions

The following table shows the recommended operating conditions for the VSC8541-02 device.

Table 114 •

Reset Timing AC Characteristics

Parameter

Symbol Minimum

Typical Maximum Unit

NRESET assertion time after power supplies and clock stabilize tW

2ms

Recovery time from reset inactive to device fully active

tREC

NRESET pulse width

tW(RL)

100

Wait time between NRESET de-assert and access of the SMI

interface

tWAIT

Table 115 •

Recommended Operating Conditions

Parameter

Symbol Minimum Typical Maximum Unit

Power supply voltage for core supply

VDD1

0.95

1.00

1.05

Power supply voltage for analog circuits

VDD1A

0.95

1.00

1.05

2.5 V power supply voltage for analog circuits

VDD25A

2.38

2.5

2.62

2.5 V power supply voltage for VDDMAC, VDDIO, and

VDDMDIO

V25

2.38

2.5

2.62

3.3 V power supply voltage for VDDMAC, VDDIO, and

VDDMDIO

V33

3.135

3.3

3.465

1.8 V power supply voltage for VDDMAC and VDDMDIO

V18

1.71

1.8

1.89

1.5 V power supply voltage for VDDMAC and VDDMDIO

V15

1.425

1.5

1.575

1.2 V power supply voltage for VDDMDIO

V12

1.14

1.2

1.26

VSC8541-02 operating temperature1

125

°C

VSC8541-05 operating temperature1

–40

125

°C

tCYC

tWL

tWH

tSU

tCO

Data

MDIO

(read)

MDIO

(write)

MDC

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