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YTD436 View Datasheet(PDF) - Yamaha Corporation

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YTD436 Datasheet PDF : 14 Pages
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BLOCK DIAGRAM
User Network Interface Block Diagram
YTD436 is the most-suited LSI for terminal equipment such as ISDN telephones and video telephones
and for PHS base stations.
YTD436 contains layer 1 and layer 2 functions, analog driver/receiver for the S/T reference point, DMA
request function for B channel data transfer, and DMA controller for D channel data transfer. Because of
this, terminal equipment can be optimally configured by adding few circuits such as the layer 3 control
processor.
S
T
U
TE1
(ISDN terminal)
R
S
NT2
(PBX, etc...)
NT1
(DSU)
TE2
TA
( Non-ISDN (Terminal Adapter)
terminal
S/T
TE1
R
TE2
S/T
U
Users premises
TE1
DSU
with built-in DSU
ISDN
Network
YTD436
YTD428 (DSU)
-6-
 

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