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FireWire Link Layer unit incorporates streaming data

Posted: 03 Oct 2002 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? tsb43ca43a? tsb43cb43a? firewire linklayer controller? ieee 1394?

Texas Instruments Inc. has announced the release of the iceLynx Micro (TSB43CA43A) IEEE 1394 (FireWire) Link Layer device that supports digital transmission content protection (DTCP) to protect entertainment content from illegal copying during transmission and playback.

DTCP, also known as 5C, is based on well-known cryptographic algorithms and techniques including AKE and PKE. The company has also released the TSB43CB43A, a pin-compatible TSB43CA43A device, which does not include DTCP.

The TSB43CA43A provides hardware acceleration of AKE, improving user response times and reducing software overhead. A pin-compatible version of the device, the TSB43CB43A, has the same features without the content protection.

The TSB43CA43A allows content to be sent digitally across the 1394 interface with no conversion to analog and no down-mixing or down-sampling required. It also enables a single cable connection between a SACD/DVD-audio player and A/V receiver, compared to the six cables currently required for high-quality audio connections.

Both the TSB43CA43A and TSB43CB43A contain an embedded 50MHz ARM microprocessor, reducing the burden on the system CPU by handling the 1394 transaction layer, DTCP authentication and key exchange, and service interrupts. Both devices also contain 256KB of internal program memory.

The iceLynx Micro devices support multiple audio formats: IEC61883-6, 60958 and 61937 (SPDIF), 2-channel and 6-channel PCM, and multi-bit linear audio (MLA-DVD audio). Audio interfaces that are also supported include S/PDIF, I2S, and MLPCM.

The TSB43CA43A is available in a 176-pin BGA package, while the TSB43CB43A is encased in a 176-pin QFP casing.

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