DS2156L+ Maxim Integrated Products, DS2156L+ Datasheet - Page 48

• Manufacturer Part Number: DS2156L+
• Description: IC TXRX T1/E1/J1 1-CHIP 100-LQFP
• Manufacturer: Maxim Integrated Products

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): -

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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