摘要:
Provided is a memory device in which the decrease of the effective bandwidth caused by the refresh operation of the memory device has been solved, a memory controller of the memory device, and a memory system thereof. A memory device that is operated in response to a command from a memory controller (82) has a plurality of banks that respectively have memory cores (92) including memory cell arrays and decoders and are selected by bank addresses; and a control circuit, which controls operation of the memory cell arrays within the banks, wherein each of the plurality of banks stores two-dimensionally arrayed data on the basis of a memory mapping of which a memory logical space has a plurality of page areas that are selected by the bank addresses and row addresses, in which the plurality of page areas are arranged in rows and columns, and in which adjacent page areas are associated with different bank addresses, and during a period of horizontal access in which the two-dimensionally arrayed data is accessed horizontally, the control circuit causes the memory cores (92) within banks selected by the bank addresses to execute normal memory operation corresponding to a normal operation command in response to the normal operation command corresponding to the horizontal access, and further causes a memory core (92) within a refresh target bank other than the horizontal access target bank to execute refresh operation in response to a background refresh command.
摘要:
An image memory, image memory system, memory controller and semiconductor integrated circuit that are capable of efficiently accessing a rectangular area of two-dimensionally arrayed data are provided. The semiconductor integrated circuit in which circuits are integrated on a single semiconductor substrate, the semiconductor integrated circuit comprising: a memory array (224) in which memory cells connected to word lines and bit lines and storing data are arranged in the form of a matrix, and which is sectioned into bit groups for each of Nb number of memory cells; and a controller that selects a bit group as a starting point, on the basis of the address signal and first combination information, the controller outputting, to Nb x N number of output terminals (DQ) in parallel, on the basis of second combination information, data items that are stored in the respective memory cells contained in N number of bit groups including the bit group as the starting point.
摘要:
An image memory, image memory system, memory controller and semiconductor storage device that are capable of efficiently accessing a rectangular area of two-dimensionally arrayed data are provided. The semiconductor storage device, comprising: memory unit areas (45) each of which stores a group of data items outputted in parallel from a plurality of data output terminals (DQ) in response to a predetermined address; a memory matrix constituted by the memory unit areas (45) corresponding to a different address; the plurality of data output terminals having at least first and second groups of data output terminals; and a controller that transfers data items stored in the first and second memory unit areas, to the first and second groups of data output terminals, on the basis of address information and combination information, and outputs the data items from the plurality of data output terminals in parallel.
摘要:
An image memory, image memory system, memory controller and semiconductor integrated circuit that are capable of efficiently accessing a rectangular area of two-dimensionally arrayed data are provided. The semiconductor integrated circuit in which circuits are integrated on a semiconductor substrate, the semiconductor integrated circuit device comprising: a memory array (224) in which memory unit areas (45) having a plurality of cells connected to word lines and bit lines are arranged in the form of a matrix; and an input/output unit (93) that reads a plurality of data items from the plurality of memory cells in response to a read command (RD) inputted from the outside, wherein the input/output unit (93) changes a combination of the plurality of data items to be read, according to combination information.
摘要:
An image memory, image memory system, memory controller and semiconductor integrated circuit that are capable of efficiently accessing a rectangular area of two-dimensionally arrayed data are provided. The semiconductor integrated circuit device in which circuits are integrated on a semiconductor substrate, the semiconductor integrated circuit device comprising: an image processing controller (81) for decoding coded image data; a memory controller (82) for controlling an image memory (86); and a setting register (543) for setting function information that indicates a function the image memory has, wherein the image processing controller (81) outputs information on a coordinate of an origin in a rectangular image and size information on the length and width of the rectangular image, to the memory controller (82), and the memory controller (82) generates commands, addresses, and a start byte signal for accessing the image memory (86), on the basis of the information on the coordinate of the origin, the size information on the length and width, and set information that is set in the setting register (543), the start byte signal indicating a start position of a memory unit area (45) within the image memory (86), which is selected by the address.
摘要:
An image memory, image memory system, memory controller and semiconductor storage device that are capable of efficiently accessing a rectangular area of two-dimensionally arrayed data are provided. The semiconductor storage device, comprising: memory unit areas (45) each of which stores a group of data items outputted in parallel from a plurality of data output terminals (DQ) in response to a predetermined address; a memory matrix constituted by the memory unit areas (45) corresponding to a different address; the plurality of data output terminals having at least first and second groups of data output terminals; and a controller that transfers data items stored in the first and second memory unit areas, to the first and second groups of data output terminals, on the basis of address information and combination information, and outputs the data items from the plurality of data output terminals in parallel.
摘要:
An image memory, image memory system, memory controller and semiconductor integrated circuit that are capable of efficiently accessing a rectangular area of two-dimensionally arrayed data are provided. The semiconductor integrated circuit in which circuits are integrated on a single semiconductor substrate, the semiconductor integrated circuit comprising: a memory array (224) in which memory cells connected to word lines and bit lines and storing data are arranged in the form of a matrix, and which is sectioned into bit groups for each of Nb number of memory cells; and a controller that selects a bit group as a starting point, on the basis of the address signal and first combination information, the controller outputting, to Nb x N number of output terminals (DQ) in parallel, on the basis of second combination information, data items that are stored in the respective memory cells contained in N number of bit groups including the bit group as the starting point.