The TSB43Ex42/43 is high-performance consumer electronics IEEE 1394 link layer and integrated physical layer devices designed for digitally interfacing advanced video consumer electronics applications. It supports formatting and transmission of IEC61883 data, including IEC61883-1 (general), IEC61883-2 (SD-DVCR), IEC61883-4 (MPEG2-TS), and IEC61883-7 (ITU-R BO.1294 SystemB-DSS). The TSB43Ex42/43 also supports standard IEEE 1394 data types, such as asynchronous, asynchronous streams, and PHY packets.

The TSB43EAxx/ECxx version incorporates DTCP (M6) baseline per the DTLA (5C) specification to support transmit and receive of up to two MPEG2 transport streams with encryption and decryption. The TSB43EAxx/ECxx version also includes hardware acceleration for content key generation.