A method of controlling connection between nodes in a digital interface whereby a first node that is a master node determines a second node to be the master and controls a point-to-point connection or a broadcast connection to another node. The first node having the display device determines the second node to be the master in accordance with a user selection, and transmits a connection command of a predetermined format for transmitting a data stream to the second node. The second node determined as the master in accordance with the transmitted connection command of the predetermined format is allocated with a channel and a bandwidth from an isochronous resource manager (IRM), and performs a point-to-point connection between the second node and the first node to transit the data stream. Thus, the transmission/reception, reproduction, and control of the data stream of the program can be smoothly performed.

A method of controlling connection between nodes in a digital interface whereby a first node that is a master node determines a second node to be the master and controls a point-to-point connection or a broadcast connection to another node. The first node having the display device determines the second node to be the master in accordance with a user selection, and transmits a connection command of a predetermined format for transmitting a data stream to the second node. The second node determined as the master in accordance with the transmitted connection command of the predetermined format is allocated with a channel and a bandwidth from an isochronous resource manager (IRM), and performs a point-to-point connection between the second node and the first node to transit the data stream. Thus, the transmission/reception, reproduction, and control of the data stream of the program can be smoothly performed.

A method of and apparatus for communicating between a host and an agent. The method includes the step of performing a first transaction between a host controller and a hub. The hub is operable to perform a single transaction with an agent based on the first transaction. The method then includes the step of performing a second transaction between the host controller and the hub. The second transaction is based on the single transaction.

A point-to-multipoint data transmission method includes separately transmitting, by an electronic device, audio data to a first earbud and a second earbud through two connected isochronous streams (CISs) of a same connected isochronous group (CIG), where the two CISs share a CIG presentation point of the CIG, where the CIG presentation point is a time point at which the first earbud and the second earbud play the audio data, transmitting, by the electronic device, the audio data to the first earbud through the first CIS from an anchor point of the first CIS, and transmitting, by the electronic device, the audio data to the second earbud through the second CIS from an anchor point of the second CIS.

A method of and apparatus for communicating between a host and an agent. The method includes the step of performing a first transaction between a host controller and a hub. The hub is operable to perform a single transaction with an agent based on the first transaction. The method then includes the step of performing a second transaction between the host controller and the hub. The second transaction is based on the single transaction.

A method and a digital device for controlling a connection between a plurality of nodes through an interface are discussed. The method according to an embodiment includes receiving control information including identification information of a destination node and a connection command. The destination node is connected with the interface based on the connection command, and the destination node maintains a connection state until a disconnection command is detected. The method further includes transmitting, according to the control information, response information including identification information of a source node.

A method and a digital device for controlling a connection between a plurality of nodes through an interface are discussed. The method according to an embodiment includes receiving control information including identification information of a destination node and a connection command. During a connection state according to the connection command, the connection between the plurality of nodes is established and the plurality of nodes maintain the connection state until a disconnection command is detected. The method further includes transmitting, according to the control information, response information including identification information of a source node.

A method and a digital device for controlling a connection between a plurality of nodes through an interface are discussed. The method according to an embodiment includes receiving control information including identification information of a destination node and a disconnection command. During a disconnection state according to the disconnection command, the connection between the plurality of nodes is released, and the plurality of nodes maintain the disconnection state until a new connection command is detected. During the disconnection state, a physical connection between the plurality of nodes is maintained to receive the new connection command through the interface. The method further includes transmitting, according to the control information, response information including identification information of a source node.

A semiconductor device comprises a receiving section configured to receive a reception data as serial data from an outside, and an anomaly check section configured to check for a presence or absence of an anomaly, whose cause can be identified, by checking the reception data.

In a semiconductor device, when bridge selection data included in reception data indicates an on-state of a through-output in which bit data is output as is, data for a first device included in the reception data is through-output from a second output terminal; transmission data received by a second receiving section via a second input terminal during the through-output of the reception data is stored in a buffer; and the transmission data read from the buffer after the through-output of the reception data is output via a first output terminal by a second transmitting section.