steps as described in the table below. The DEBUG2 pin is asserted to advertise the DTS detection and the

A_B_SIDE pin indicates the orientation of the connection. The orientation detection is advertised through the

TYPEC_FSM_STATE bits of the I²C register CC_OPERATION_STATUS.

Table 7. Orientation detection

#

CC1 pin

(CC2 pin)

CC2 pin

(CC1 pin)

Detection process

A_B_SIDE pin

CC1/CC2

(CC2/CC1)

Orientation detection state

TYPEC_FSM_STATE bits value

1

Rd

Rd

1st step: debug accessory mode detected

HiZ (HiZ)

UnorientedDebugAccessory.SRC

2

Rd

≤ Ra

2nd step: orientation detected (DTS

presents a resistance to GND with a value

≤ Ra on its CC2 pin)

HiZ (0)

OrientedDebugAccessory.SRC

STUSB1702

Accessory mode detection

DS12664 - Rev 1

page 13/38