P9222-R/RN Datasheet

© 2019-2022 Renesas Electronics Corporation

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May 5, 2022

7.5.2 Ping

In the “Ping” phase, the P9222-R/RN transmits a Signal Strength Packet as the first communication packet to instruct the base to keep the

power signal on. After sending the Signal Strength Packet, the P9222-R/RN proceeds to the “Identification and Configuration” phase. If, instead,

an End Power Transfer packet is sent or requested to be sent by the AP, or if an invalid response is sent, then the P9222-R/RN remains in the

“Ping” phase.

In this phase, the P9222-R/RN sends the following packets:



Signal Strength Packet



End Power Transfer Packet

7.5.3 Identification and Configuration

In the “Identification and Configuration” phase, the P9222-R/RN sends or expects the following packets:



Identification Packet



Configuration Packet

After the transmission of the Configuration Packet, the P9222-R/RN proceeds to the “Power Transfer” phase.

7.5.4 Power Transfer

In the “Power Transfer” phase, the P9222-R/RN controls the power transfer by means of the following control data packets:



Control Error Packets (CEP)



Rectified Power Packet (RPP)



End Power Transfer Packet (EPT)

7.5.4.1

End Power Transfer (EPT) Packet

In the event of an EPT, the P9222-R/RN turns off only after the AP instructs the P9222-R/RN to continuously send End Power Transfer packets

until the transmitter removes the power and the rectifier voltage on the receiver side drops below the under-voltage lock-out (UVLO) threshold

(see Table 5).