| 摘要 |
PURPOSE:To detect out of synchronism between plural pipes, by inserting an abnormal data pattern into a stage in an empty state from a control pipe at the entrance of a controlled pipe, and checking the data pattern at the exit of the pipe. CONSTITUTION:A parity check is made at the entrance of the control pipe 301 and if information in the stage indicates significance, it is stored in a register for the parity check 304 by a signal 303. When it indicates insignificance, a parity error pattern is inserted. The parity check is made even at the exit 20 of the pipe 301; the information is stored in a register 504 when a signal 306 indicates the significance of the information or in a register 505 when not. When there is no out of synchronism between the pipes 301 and 302, a detection signal 507 shows 0. When out of synchronism occurs, the signal shows 1. |
