DS2156L+ Maxim Integrated Products, DS2156L+ Datasheet - Page 48
![IC TXRX T1/E1/J1 1-CHIP 100-LQFP](/photos/6/82/68291/406-100-lqfp_sml.jpg)
DS2156L+
Manufacturer Part Number
DS2156L+
Description
IC TXRX T1/E1/J1 1-CHIP 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2156L.pdf
(265 pages)
Specifications of DS2156L+
Function
Single-Chip Transceiver
Interface
E1, J1, T1, TDM, UTOPIA II
Number Of Circuits
1
Voltage - Supply
3.14 V ~ 3.47 V
Current - Supply
75mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Includes
BERT Generator and Detector, CMI Coder and Decoder, HDLC Controller
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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DS2156
6. PROGRAMMING MODEL
The DS2156 register map is divided into three groups: T1 specific features, E1 specific features, and
common features. The typical programming sequence begins with issuing a reset to the DS2156, selecting
T1 or E1 operation in the master mode register, enabling T1 or E1 functions and enabling the common
functions. The act of resetting the DS2156 automatically clears all configuration and status registers.
Therefore, it is not necessary to load unused registers with 0s.
Figure 6-1. Programming Sequence
POWER-ON
ISSUE RESET
SELECT T1 OR E1 OPERATION
IN MASTER MODE REGISTER
PROGRAM E1 SPECIFIC REGISTERS
PROGRAM T1 SPECIFIC REGISTERS
PROGRAM COMMON REGISTERS
DS2156 OPERATIONAL
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