Functional tables

STUSB06E

14/20

7

Functional tables

Table 9.

Standard mode (see

Table 12)

SUSPEND

OE#

D+, D-

RCV

VP, VM

Function

L

L

Driving

Active

Active

Normal driving

L

H

Receiving

Active

Active

Receiving

H

L

Driving

1.

In suspend mode the differential receiver is inactive and RCV is LOW.

Active

Driving during suspend (Differential receiver

inactive)

H

H

High-Z

Active

Low-power state

Table 10.

Standard mode driving (OE#=LOW)

FSE0

VO

D+, D-

L

L

Differential logic 0

L

H

Differential logic 1

H

L

SE0

H

H

SE0

Table 11.

Standard mode receiving (OE#=HIGH)

D+,D-

RCV

VP

VM

Differential logic 0

L

L

H

Differential logic 1

H

H

L

SE0

LL

1.

RCV holds the status it had just before SE0.

Table 12.

Pull-up setting mode (speed selection and charger detection)

Suspend

Softcon

Speed#

Function

0

0

0

No 1.5 k

Ω pull-up

FS

USB standard mode, default

state

0

1

0

1.5 k

Ω pull-up

FS

USB standard mode

0

0

1

No 1.5 k

Ω pull-up

LS

USB standard mode

01

1

Pull-up ON (1.5 k

Ω) after detecting

SE0 RCV=”0”

FS

Suspend, conditional pull-up

1

0

0

No 1.5 k

Ω pull-up

FS

Suspend standard mode

1

1

0

1.5 k

Ω Pull-up

FS

Suspend standard mode

1

0

1

No 1.5 k

Ω pull-up

LS

Suspend standard mode

1

1

1

No 1.5 k

Ω pull-up, RCV=”0”

FS/X USB mode & Rwpu ON (150 k

Ω)