Abstract: A clock-synchronizing apparatus and method of devices with different clocks are disclosed. Between a first device operated with a first clock and a second device operated with a second clock faster than the first clock, an operation latency of the second device refers to the first clock, control signals that controls the second device are generated at the second clock speed according to the operation latency, and an enable interval of the control signals has a 1/4 clock period of the first clock. Accordingly, since the first device and the second device can transmit and receive a data to and from each other while being operated by using their own clock, an access latency for the first device to access the second device can be reduced and a transmission band width between the two devices can be effectively used.

Abstract: A router apparatus in accordance with one or more embodiments of the invention is provided. In one embodiment, routing information of a first unit is mirrored to a second unit in real time, wherein at least one of the first unit and the second unit comprises at least one switching unit for transferring the routing information from the first unit to the second unit, eliminating use of a PCI-to-PCI board to complete transferring the routing information. When the routing information is stored in a first memory of a first switching unit, and the first switching unit transfers the information to the second unit. A second switching unit receives the routing information from the first switching unit and stores the routing information in a second memory of the second unit.

Abstract: A clock-synchronizing apparatus and method of devices with different clocks are disclosed. Between a first device operated with a first clock and a second device operated with a second clock faster than the first clock, an operation latency of the second device refers to the first clock, control signals that controls the second device are generated at the second clock speed according to the operation latency, and an enable interval of the control signals has a clock period of the first clock. Accordingly, since the first device and the second device can transmit and receive a data to and from each other while being operated by using their own clock, an access latency for the first device to access the second device can be reduced and a transmission band width between the two devices can be effectively used.