ZHCSCE7I March 2014 – July 2019 TPS23861
PRODUCTION DATA.
NOTE
In order to meet the IEEE 802.3at standard, PWONn bit should be set within 22 ms after classification is completed if two-event classification is applied.
There is no automatic change of state. A single detection or classification event may be initiated by writing to the appropriate bit of the Detect/Class Restart Register which is a pushbutton register. Furthermore, setting the DETEn bit initiates one detect cycle for Port n; setting the CLEn bit initiates one classify cycle for Port n. The number of classification events depend on the classification status of the first classification event and the setting of the TECLENn field as shown in Table 7.
| CLASSIFICATION STATUS
OF FIRST CLASSIFICATION EVENT |
VALUE OF TECLENn | TOTAL NUMBER
OF CLASSIFICATION EVENTS |
|---|---|---|
| Class 0, Class 1, Class 2 or Class 3 | XX | One |
| Class 4 | X0 | One |
| X1 | Two |
In manual mode, writing to the pushbutton PWONn bit powers on Port n immediately.
NOTE
In Manual mode, the ICUTn and PoEPn fields are not set automatically. They must be set by the host. Furthermore, there is no cool-down period in manual mode.