SLUSBX9I March 2014 – July 2019 TPS23861
Command = 20h with 1 Data Byte, Read/Write
|RESET or POR VALUE||00||00||00||00|
Legacy-detect operation is described in Legacy Device Detection. The TPS23861 can perform a legacy-detect operation only or a standard detection followed by a legacy-detect operation when directed by the RDETn push-button command in the Detect/Class Restart Register, or in Semi-Auto or Auto Mode when the DETEn bit in the Detect/Class Enable Register is set. Note that in Semi-Auto or in Auto Mode, the port will not automatically power up if a legacy device is detected. In these cases, the port must be powered on by the host.
LEGMODn[1:0]: Legacy-detection-mode field. This field defines the Legacy-Detect Mode of Port n as follows.
|LEGMODn[1:0]||LEGACY DETECT MODE|
|00||Legacy detect disabled; if DETEn bit in Detect/Class Enable Register is set, a standard (resistance only) detection sequence will be performed.|
|01||Legacy detect sequence only; if DETEn bit in Detect/Class Enable Register is set, a legacy detect sequence will be performed|
|10||Standard + legacy detect sequence; if DETEn bit in Detect/Class Enable Register is set, a standard detection followed by legacy detect sequence will be performed|