Patent ID: 8938567
Filing Date: 2015-01-20
Classification: G06F

Abstract:
1. A communication apparatus for carrying out communications to and from an external apparatus, the external apparatus including a first switch having a first non-transparent port and effecting an interconnection for communications via the first non-transparent port, the communication apparatus comprising: a second switch including a second non-transparent port directly connected to the first non-transparent port, the second switch effecting an interconnection for communications via the second non-transparent port, wherein the second switch performs, when the communication apparatus carries out communications to and from the external apparatus via the second non-transparent port, address translation between an address for use by the communication apparatus and an address for use by the second non-transparent port, the first switch splits a clock domain of the external apparatus into a first clock domain where spectrum-spread clock is applied and a second clock domain where non-spectrum-spread clock is applied, the second switch splits a clock domain of the communication apparatus into the first clock domain and the second clock domain, a clock domain between the first non-transparent port and the second non-transparent port is the second clock domain, and the non-spectrum spread clock of the communication apparatus, when applied to the second clock domain, is synchronized with the non-spectrum-spread clock of the second clock domain of the external apparatus.