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> 5 pcs. ad# AD6438BST, atm interface and framer ic
5 pcs. ad# AD6438BST, atm interface and framer ic
This item is for 5 pcs. ANALOG DEVICE# AD6438BST
The AD6438 Interface and Framer IC is part of Analog Devices
AD20msp918 chipset, a flexible, standards-based solution for
creating high performance ATM-based ADSL modems. The
AD6438 is interoperable with the AD20msp910 ADSL chipset.
The AD6438 interfaces an ADSL modem to an external system,
at either CO (Central Office) or RT (Remote Terminal) modem,
using a standard UTOPIA 1 or 2 port (byte wide, cell or
byte mode). It inserts ATM cells into an ADSL line, with functions
that correspond to the Transmission Convergence (TC)
sublayer in the BISDN protocol reference model (per ITU-T
I.432 and T1.413 Issue 2). These include cell delineation, HEC
generation, and cell rate adaption, as defined by the ATM working
group of the ADSL forum and the RBB working group of
The AD6438 implements both standard and reduced overhead
framing per ANSI T1.413 Issue 2, and includes FEC (forward
error correcting code) and interleaving.
