| 摘要 |
PURPOSE:To halve bit number of a shift register by detecting the transmission of bit number being a half the bit number of a serial data and transferring a data fetched in a latch circuit at the point of time to the shift register so as to send the serial data. CONSTITUTION:Only a data in n-bit being a half of 2n-bit among the data in 2n-bit to be transferred is stored in a shift register 1, the remaining data in n-bit is stored once in latch circuits 3a-3d and transferred to the shift register 1 after the transfer operation of n-bit in the shift register 1 is finished. That is, since the shift register 1 processes the data to be transferred by a half each, the number of stages by a half bit number has only to be prepared to a data length of the serial data. Thus, the shift register 1 is constituted by a fewer number of stages than a conventional stage number, the hardware is reduced and the chip area is decreased. |
