ds2156gn Maxim Integrated Products, Inc., ds2156gn Datasheet - Page 14

• Manufacturer Part Number: ds2156gn
• Description: Ds2156, Ds2156l, Ds2156ln T1/e1/j1 Single-chip Transceiver Tdm/utopia Ii Interface
• Manufacturer: Maxim Integrated Products, Inc.

2.1
Figure 2-1 shows a simplified block diagram featuring the major components of the DS2156. Details are
shown in subsequent figures. About 30 device pins have dual functions depending on the selection of the
backplane, UTOPIA, or TDM. Some of the block diagrams depict a configuration based on the state of
the backplane selection. The block diagram is divided into three functional blocks: LIU, FRAMER, and
BACKPLANE INTERFACE.
Figure 2-1. Block Diagram
Block Diagram
ADAPTER
LIU
RX
LIU
TX
CLOCK
CLOCK
LIU
EXTERNAL ACCESS
TO RECEIVE SIGNALS
(TDM BACKPLANE ONLY)
EXTERNAL ACCESS
TO TRANSMIT SIGNALS
(TDM BACKPLANE ONLY)
JTAG
HOST INTERFACE
MUX
MUX
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HDB3 / B8ZS
ALARM GEN
HDB3 / B8ZS
ALARM DET
SINGALING
SINGALING
CRC GEN
FRAMER
FRAMER
HDLCs
HDLCs
ESIB
SYNC
BACKPLANE
INTERFACE
DS2156
BACKPLANE
INTERFACE
BACKPLANE
CLOCK SYNTH
CIRCUIT
UTOPIA
TDM
or