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2015-08-0012

PT0513-3

8/31/15

20

PI5USB2544A, PI5USB2546A

USB Charging Port Controller and Load Detection Power Switch

PI5USB2544A Device Control Pins Truth Table

CTL1

CTL2

CTL3

ILIM_SEL

MODE

Current Limit

Setting

Comment

0

0

0

0

Discharge

NA

OUT held low

0

0

0

1

Discharge

NA

0

x

1

x

DCP_Auto

ILIM_HI

Data lines disconnected

0

1

0

0

SDP1

ILIM_LO

Data lines connected

0

1

0

1

SDP1

ILIM_HI

0

1

1

0

DCP_Auto

ILIM_HI

Data lines disconnected

0

1

1

1

DCP_Auto

ILIM_HI

Data lines disconnected

1

0

0

0

DCP_Shorted

ILIM_LO

Device forced to stay in DCP BC1.2

charging mode

1

0

0

1

DCP_Shorted

ILIM_HI

1

0

1

0

Divider-1A

ILIM_LO

Device forced to stay in Divider-1A

charging mode

1

0

1

1

Divider-1A

ILIM_HI

1

1

0

0

SDP1

ILIM_LO

Data lines connected

1

1

0

1

SDP1

ILIM_HI

1

1

1

0

SDP2

(1)

ILIM_LO

1

1

1

1

CDP

(1)

ILIM_HI

Data lines connected

Note:

Below tables can be used as an aid to program the PI5USB2544A/2546A per system states however not restricted to below

settings only.

PI5USB2546A Control Pin Setting Matched to System Power States

System Global

Power State

Charging Mode

CTL1

CTL2

CTL3

ILIM_SEL

Current Limit

Setting

S0

SDP1

1

1

0

1 or 0

ILIM_HI/ILIM_LO

S0

SDP2, no discharge to/from CDP

1

1

1

0

ILIM_LO

S0

CDP, load detection with ILIM_LO +

25mA thresholds or if a BC1.2 primary

detection occurs

1

1

1

1

ILIM_HI

S4/S5

Auto mode, load detection with power

wake thresholds

0

0

1

1

ILIM_HI

S3/S4/S5

Auto mode, no load detection

0

0

1

0

ILIM_HI

S3

Auto mode, keyboard/mouse wake up,

load detection with ILIM_LO + 25mA

thresholds

0

1

1

1

ILIM_HI

S3

Auto mode, keyboard/mouse wake up,

no load detection

0

1

1

0

ILIM_HI

S3

SDP1, keyboard/mouse wake up

0

1

0

1 or 0

ILIM_HI/ILIM_LO