公开(公告)号：US20220066955A1

公开(公告)日：2022-03-03

申请号：US17005143

申请日：2020-08-27

Applicant: QUALCOMM Incorporated

Inventor： Sharon GRAIF ,  Navdeep MER ,  Lior AMARILIO

IPC: G06F13/16 ,  G06F1/28 ,  G06F11/07 ,  G06F13/40 ,  G06F13/42

Abstract: Systems, methods, and apparatus are configured to enable a receiver to provide feedback. A feedback mechanism enables a transmitting device to identify the provider of feedback for a multicast transmission, and the feedback transmitted by one or more individual receivers of the multicast transmission. A method includes receiving a multicast write command from the serial bus in a first datagram, writing a data byte received in a first data frame of the first datagram to a register address identified by the first datagram, and providing device-specific feedback regarding the first datagram in a multibit slot within the second data frame. The multibit slot is one of a plurality of sequential multibit slots defined for the second data frame. Each multibit slot in the plurality of sequential multibit slots may provide device-specific feedback from one receiving device addressed by the multicast write command.

公开(公告)号：US20230350841A1

公开(公告)日：2023-11-02

申请号：US17923110

申请日：2021-04-16

Applicant: QUALCOMM Incorporated

Inventor： Sharon GRAIF ,  Navdeep MER ,  Naveen Kumar NARALA ,  Sriharsha CHAKKA

IPC: G06F13/42 ,  G06F13/40

CPC classification number: G06F13/4291 ,  G06F13/4072

Abstract: Systems, methods, and apparatus are configured to enable a receiver to provide feedback. In one example, a method performed at a device coupled to a serial bus includes receiving a write command from the serial bus in a datagram, writing a data byte received in a first data frame of the datagram to a register address identified by the datagram, and using a second data frame of the datagram to provide feedback regarding the datagram. Feedback may be provided by driving a data line of the serial bus to provide a negative acknowledgement during the second data frame when a transmission error is detected in the datagram, and refraining from driving the data line of the serial bus during the second data frame when no transmission error is detected in the datagram, thereby providing an acknowledgement of the datagram.