米6体育平台手机版

SLVUCR7 September 2024 TPS26750

Table 5-14 'MBRd' - Read from PD message buffer.

Description	The MBRd Task instructs the PD Controller to read data from the extended message buffer previously received from the Port Partner.
INPUT DATAX	Bit	Name	Description
	23	Reserved	Reserved (Write as 0).
	22	UnlockRxBuffer	This input controls whether or not the PD controller unlocks its internal buffer after this Task is completed. It is recommended to unlock the internal buffer as soon as possible to make room for other incoming messages. It is important that the host only set this bit to 1 after it has received an alert that the Rx Buffer is locked (that is INT_EVENTx.MBRdBufferReady asserted).
			0b	Do not clear the internal buffer, another 'MBRd' Task can be used later.
			1b	Clear the internal buffer after this Task completes and the requested data is in the DATAx register.
	21:16	DataSize	Number of data bytes to be read in from the message buffer. Up to 62 bytes can be read at after.
	15:0	BuffOffset	Buffer Offset. Values 0 to 259 are possible.
OUTPUT DATAX	Bit	Name	Description
	511:16	DataByte1	First Byte of data read at BuffOffset.
	15:0	MessageSize	Size of message in bytes.
Task Completion	The MBRd Task completes after buffer data of DataSize at BuffOffset has been read from the message buffer.
Side Effects	None
Additional Information	This Task is required for the host to obtain the information from the response due to the usage of the 'GPPI' Task . The PD controller has a single buffer per port that is shared for these messages.