DS2149 MAXIM [Maxim Integrated Products], DS2149 Datasheet - Page 3

• Manufacturer Part Number: DS2149
• Description: 5V T1/J1 Line Interface Unit
• Manufacturer: MAXIM [Maxim Integrated Products]

DS2149
LIST OF FIGURES
Figure 1-1. Block Diagram....................................................................................................................................... 4
Figure 2-1. Hardware Mode Pinout ........................................................................................................................ 6
Figure 2-2. Serial Port Mode Pinout....................................................................................................................... 6
Figure 9-1. Serial Data Port Operation for Read Access.................................................................................. 18
Figure 9-2. Serial Data Port Operation for Write Access.................................................................................. 18
Figure 10-1. Loopbacks in the DS2149 Block Diagram.................................................................................... 21
Figure 11-1. Basic Network Interface .................................................................................................................. 25
Figure 11-2. T1 Transmit Pulse Template .......................................................................................................... 26
Figure 11-3. Jitter Tolerance ................................................................................................................................. 27
Figure 11-4. Jitter Attenuation............................................................................................................................... 27
Figure 12-1. Serial Bus Read Timing (MODE1 = 1) .......................................................................................... 29
Figure 12-2. Serial Bus Write Timing (MODE1 = 1) .......................................................................................... 29
Figure 12-3. AC Characteristics for Receive Side ............................................................................................. 30
Figure 12-4. AC Characteristics for Transmit Side ............................................................................................ 31
LIST OF TABLES
Table 2-A. Operating Modes ................................................................................................................................... 5
Table 2-B. Control Pins for Hardware and Software Modes .............................................................................. 5
Table 2-C. Signal Descriptions ............................................................................................................................... 7
Table 4-A. Register Map .......................................................................................................................................... 9
Table 4-B. Register Bit Positions............................................................................................................................ 9
Table 4-C. Jitter Attenuator Selection.................................................................................................................. 10
Table 4-D. Line Code and Interface Selection ................................................................................................... 10
Table 4-E. Line Build-out Selection...................................................................................................................... 10
Table 4-F. Data Pattern Selection ........................................................................................................................ 11
Table 9-A. CLKE Pin Selection............................................................................................................................. 17
Table 9-B. Control and Operation Mode Selection............................................................................................ 19
Table 10-A. Diagnostic Modes.............................................................................................................................. 19
Table 11-A. Specifications for Receive Transformer......................................................................................... 24
Table 11-B. Specifications for Transmit Transformer........................................................................................ 24
Table 11-C. Transformer Turns Ratio vs. Series Resistance .......................................................................... 24
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