Data transfer control device and electronic instrument
AssigneeSeiko Epson Corporation
InventorHiroyasu Honda
Life of this patent
Estimating the term…
Abstract
A data transfer control device includes: an interface circuit to which data of which one data unit is K bits is input through an interface bus; and a link controller which generates a packet transmitted through a serial bus. The link controller includes: a data formatter which generates (N×I)-byte packed data containing M pieces of (K+L)-bit data obtained by adding L bits of dummy data to the K-bit data, the data formatter generating the packed data in which L and M are variably set corresponding to K; and a packet generation circuit which generates a packet in which the packed data is inserted in a data field.
Claims20
A data transfer control device which controls data transfer, the data transfer control device comprising:
- an interface circuit to which data of which one data unit is K bits (K is an integer of two or more) is input through an interface bus;
- and
- a link controller which generates a packet transmitted through a serial bus, the link controller including:
- a data formatter which generates (N×I)-byte (N and I are integers of one or more) packed data containing M (M is an integer of one or more) pieces of (K+L)-bit data obtained by adding L bits (L is an integer of zero or more) of dummy data to the K-bit data, the data formatter generating the packed data in which L and M are variably set corresponding to K;
- and
- a packet generation circuit which generates a packet in which the packed data is inserted in a data field as the packet transmitted through the serial bus.
A data transfer control device which controls data transfer, the data transfer control device comprising:
- an interface circuit which performs interface processing between the data transfer control device and a host device connected with the data transfer control device through a system bus;
- and
- a link controller which analyzes a packet received through a serial bus and outputs data of which one data unit is K bits (K is an integer of two or more) to the interface circuit,
- (N×I)-byte (N and I are integers of one or more) packed data, which contains M (M is an integer of one or more) pieces of (K+L)-bit data obtained by adding L bits (L is an integer of zero or more) of dummy data to the K-bit data and in which L and M are variably set corresponding to K, being inserted in a data field of the packet received through the serial bus;
- and
- the link controller including a data formatter which extracts the K-bit data from the packed data and outputs the extracted K-bit data to the interface circuit.
Dependencies are inferred from the claim text.