5

Start-up configuration

5.1

User-defined parameters

The STUSB4500 has a set of user-defined parameters that can be customized by NVM re-programming through

interface and to define a new configuration to meet specific application requirements addressing various use

cases, or specific implementations.

The NVM re-programming overrides the initial default setting to define a new default setting that is used at power-

each NVM re-programming to make effective the new parameters setting either through power-off and power-up

sequence, or through reset.

5.2

Default start-up configuration

The table below lists the user-defined parameters and indicates the default start-up configuration of the

STUSB4500.

Parameter name

Parameter description

Reset

value

(default)

Value

Description

SNK_PDO_NUMB[1:0]

Number of sink PDOs

11b

(3)

00b

1 PDO

01b

1 PDO

10b

2 PDOs

11b

3 PDOs

V_SNK_PDO2

Voltage value for SNK_PDO2

0.05*300

(15 V)

0.05*100

to

0.05*400

Flexible voltage value

5 V ≤ 0.05*V_SNK_PDO2_FLEX[9:0]

≤ 20 V by steps of 50 mV

Default V_SNK_PDO2_FLEX[9:0] =

0100101100

V_SNK_PDO3

Voltage value for SNK_PDO3

0.05*400

(20 V)

0.05*100

to

0.05*400

Flexible voltage value

5 V ≤ 0.05*V_SNK_PDO3_FLEX[9:0]

≤ 20 V by steps of 50 mV

Default V_SNK_PDO3_FLEX[9:0] =

0110010000

I_SNK_PDO1

Current value for SNK_PDO1

0101b

(1.5 A)

0000b

I_SNK_PDO_LUT[3:0] flexible current

value from look-up table (see Table

17. Look-up table for sink PDO current

configuration)

0001b

to

1111b

I_SNK_PDO_LUT[3:0] pre-defined

current values from look-up table (see

Table 17. Look-up table for sink PDO

current configuration )

STUSB4500

Start-up configuration

DS12499 - Rev 2

page 18/41