Single-chip 1394a link & PHY for audio/video data connectivity
( 01 Sep 2004 )
Edited by Robin Lange, Managing Editor
Texas Instruments' cost-effective, integrated 1394a link-layer-controller and two-port PHY give designers of multi-media applications an off-the-shelf component that facilitates communication of compressed A/V data and digital audio according to the IEC61883 standard.
The TSB43DA42 and TSB43DB42 Link and PHY each include three HSDI ports. Each port is dedicated to an isochronous data path and can be independently configured to transmit and receive from the 1394. The integrated two-port PHY is capable of communicating at 400, 200 or 100Mbps.
Equipped with DTCP, the TSB43DA42 can handle all formatting of IEC61883 packets. To do this, the device must first be configured by an external CPU which is connected to the host interface using either a PCI or SRAM/68K bus. The TSB43DB42 is pin-for-pin compatible with the TSB43DA42, but does not include DTCP.
When transmitting to the 1394 network, the codecs will output compressed data and the device will generate and output the IEC61883 packet containing the data. When receiving data from the 1394 network, TSB43DA42 will remove 1394 headers and time-stamps from the IEC61883 packet and then output the compressed A/V data to the codec. TSB43DA42, $8.25; TSB43DB42, $7.85 (1000).
