UPD360 datasheet(68/221 Pages) MICROCHIP

68 / 221 page

UPD360

DS00002084C-page 68

 2016-2017 Microchip Technology Inc.

9.0

CABLE PLUG ORIENTATION AND DETECTION

This section details the functions that control and monitor the CC pins, monitor the VBUS_DET pin, control the VCONN

FETs, and sample the CFG_SEL0 and CFG_SEL1 pins.

9.1

CC Comparator

The device integrates a comparator and DAC circuit to implement Type-C attach and detach functions. It supports up

to eight programmable thresholds for attach detection between UFP and DFP. When operating as a UFP, the device

supports detecting changes in the DFP’s advertised thresholds to determine current sourcing capability. The default

nominal values for the thresholds detected by the CC comparators are:

• 0.20 V

• 0.40 V

• 0.66 V

• 0.80 V

• 1.23 V

• 1.60 V

• 2.60 V

• 3.0 V Proprietary Mode

TABLE 9-1:

CABLE DETECT SUMMARY

Parameter

Threshold CSR

Description

Min

Typ

Max

DFP_ACT_DEF

CC_THR0

Detecting an active cable when configured

as DFP and advertising default USB current.

0.20 V

UFP_DFP_DEF

CC_THR0

Detecting DFP attach when configured as

UFP and DFP is advertising default USB

current.

0.20 V

DFP_ACT_1A5

CC_THR1

Detecting an active cable when configured

as DFP and advertising 1.5A.

0.40 V

UFP_DFP_1A5

CC_THR2

Detecting DFP attach when configured as

UFP and DFP is advertising 1.5A.

0.66 V

DFP_ACT_3A0

CC_THR3

Detecting an active cable when configured

as DFP and advertising 3.0A.

0.80 V

UFP_DFP_3A0

CC_THR4

Detecting DFP attach when configured as

UFP and DFP is advertising 3.0A.

1.23 V

DFP_UFP_DEF

CC_THR5

Detecting UFP attach when configured as

DFP advertising default USB current.

1.60 V

DFP_UFP_1A5

CC_THR5

Detecting UFP attach when configured as

DFP advertising 1.5A.

1.60 V

DFP_UFP_3A0

CC_THR6

Detecting UFP attach when configured as

DFP advertising 3.0A.

2.60 V

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