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FSA4476 Rev. 1.3.2

3

Name

Ball

Description

SBU2_H

B1

Host Side Sideband Use Wire 2

CC1

B5

Configuration Channel 1

CC2

B4

Configuration Channel 2

CC1_H

A5

Host Side Configuration Channel 1

CC2_H

A4

Host Side Configuration Channel 2

INT

A3

OVP and OTP Interrupt Output, active low (open drain)

INT1

C2

Interrupt Output Signal; During EN1=1, INT1 is low active (open drain output)

when CC1_H <1.2V and CC2_H<1.2V.

ENN

C3

Chip Enable, active low, internal pull-down by 1Mohm.

EN1

D3

Logic Configuration Input 1

EN2

E3

Logic Configuration Input 2

NC

B3

No Connect

Truth Table

Power

ENN

EN1,EN2

CC switch

Headset

detection

USB switch

Audio switch

MIC SW /

GND_M SW

SBU bypass

switch

OFF

X

XX

Dead

battery

OFF

OFF

OFF

OFF

OFF

ON

H

XX

OFF

OFF

OFF

OFF

OFF

OFF

ON

L

00

ON

OFF

ON:

DP/R to DP

DN/L to DN

OFF

OFF

ON:

SBU1 to SBU1_H

SBU2 to SBU2_H

ON

L

01

ON

OFF

ON:

DP/R to DP

DN/L to DN

OFF

OFF

ON:

SBU1 to SBU2_H

SBU2 to SBU1_H

ON

L

10

ON

ON

OFF

ON:

DP/R to R

DN/L to L

ON:

SBU1 to MIC

SBU2 to GND_M

SBU2 to GND

OFF

ON

L

11

ON

ON

OFF

ON:

DP/R to R

DN/L to L

ON:

SBU2 to MIC

SBU1 to GND_M

SBU1 to GND

OFF