TSB43Dx42--IEEE 1394a Controll

The TSB43DA42/TSB43DB42/
TSB43DA42A (later referred to as
TSB43Dx42) from Texas
Instruments (TI) are single-chip
IEEE 1394 solutions containing
both the link-layer controller and
the physical-layer controller func-
tionality.  The primary function of
the TSB43Dx42 is to handle com-
munication of audio/video data
(such as DV or MPEG-TS) across
a 1394 network as required by the
consumer electronics market.
Each of the three high-speed
data interfaces (HSDIs) are
associated with an isochronous
datapath and can be indepen-
dently configured to transmit (to
IEEE 1394) or receive (from
IEEE 1394). All three HSDI ports
support seamlessconnections to
the various codecs on the market. 
Once the TSB43Dx42 is config-
ured appropriately by an external
CPU (connected to the host
interface using either a PCI or
SRAM/168K bus), it will handle all
of the formatting of the IEC61883
packets.  When transmitting to
the 1394 network, this means the
codecs will be responsible for
outputting the compressed A/V