摘要:
The present invention is a method and apparatus (106) for an N-NARY logic circuit that uses N-NARY signals (A0-A3, B0-B3). The present invention includes a shared logic tree circuit (107) that evaluates one or more N-NARY input signals and produces an N-NARY output signal (V0-V3). The present invention additionally includes a first N-NARY input signal (A0-A3) coupled to the shared logic tree circuit and a second N-NARY input signal (B0-B3) coupled to the shared logic tree circuit. The shared logic circuit evaluates the first and second N-NARY input signal and produces an N-NARY output signal (V0-V3) coupled, which additionally couples to the shared logic tree circuit. The present invention uses signals that include 1 of 2 N-NARY signals, 1 of 3 N-NARY signals, 1 of 4 N-NARY signals (A0-A3, B0-B3), 1 of 8 N-NARY signals, and the general 1 of N N-NARY signals. The present invention evaluates any given function that includes the AND/NAND, OR/NOR, or XOR/Equivalence functions.
摘要:
A rotation controller (38) performs bit rotation in units of 2 bits for 8-bit data supplied from a common data bus (36) in accordance with a mode selection signal (MS) from a mode selector (46) and a column selection state of a column decoder (34) and outputs the 8-bit data. The data bit-rotated by the rotation controller (38) is supplied to a RAM (30) via first to third I/O gate blocks (42a - 42c) each having gates (44) of 8 bits connected to a corresponding one of first to third 8-bit column arrays of the RAM (30). First to third gate controllers (48a - 48c) are selectively activated by the column decoder (34). When a 6-bit write mode is selected by the mode selection signal (MS) from the mode selector (46), the first gate controller (48a) activates only gates (44) of 6 upper bits in the first I/O gate block (42a), the second gate controller (48b) activates only gates (44) of 2 lower bits in the first I/O gate block (42a) and gates (44) of 4 upper bits in the second I/O gate block (42b), and the third gate controller (48c) activates only gates (44) of 4 lower bits in the second I/O gate block (42b) and gates (44) of 2 upper bits in the third I/O gate block (42c).
摘要:
A barrel shifter comprises a plurality of shift selecting sections respectively connected in series to one another to form a plurality of stages, wherein each of the shift selecting sections includes a wiring network for shifting a reference data composed of a series of binary codes by a predetermined number of bits, and a data selecting circuit for receiving shifted data obtained from the wiring network and the reference data in parallel, selecting either of the two kinds of data and providing the selected data as a new reference data, and a data selecting circuit being at least one of the shift selecting sections has waveform shaping means for correcting the distortion of the potential waveform of the data which are selected and provided from the other data selecting circuit.
摘要:
A barrel shifter comprises an alignment circuit formed from two cell arrays (6a and 6b) comprising registers (AO to A7 and 80 to B7) provided in series for receiving a 2n-bit data row as input and outputting one n-bit data row as one item of data and another n-bit data row as one item of data shifted by n bits aligned in a predetermined arrangement; and a selector group (13 to 16) wherein the shift data (basic data) is input, the basic data is shifted by k-bits only (where k
摘要:
There is disclosed a barrel shifter for providing efficient wiring therein and a compact composition as compared with conventional ones, in which a low-level-input resistor (10) and a high-level-input resistor (11) are arranged in parallel to each other, and low-level-input-bit lines (LB) and high-level-input-bit lines (HB) are alternately arranged corresponding to both resistors respectively, the width of both the input and output sides of a barrel-shifter main unit (12) are so arranged as to be substantially the same as the width of the respective resistors substantially defined by wiring width of the respective input-bit lines, and a wiring area from the high-level-input resistor (11) is incorporated in the barrel-shifter main unit (12) as well as a wiring area from the low-level-input resistor (10).
摘要:
L'invention concerne un circuit, dit circuit décaleur, utilisable notamment comme opérateur dans des unités d'arithmétique et de logique d'ordinateurs. Selon l'invention, le circuit comporte un générateur d'un mot de parité (116) composé des bits de parité de tous les groupes de n bits (par exemple des quartets) qu'il est possible d'extraire des mots d'entrée A et B et une matrice de parité (115) associée à la matrice de décalage (113) pour produire sur des lignes de sortie de parité Q les bits de parité des groupes de n bits consécutifs qui constituent le mot de sortie S.