CDB61581 Datasheet, PDF (2/16 Pages) Cirrus Logic – Universal Line Interface Unit

CDB61581
TABLE OF CONTENTS
1. POWER SUPPLY ................................................................................................ 3
2. BOARD CONFIGURATION ................................................................................. 3
2.1. Hardware Mode .......................................................................................... 3
2.1.1. Network Loopback ......................................................................... 3
2.2. Hardware-Coder Mode ............................................................................... 3
2.3. Host Mode .................................................................................................. 3
3. TRANSMIT CIRCUIT ........................................................................................... 4
4. RECEIVE CIRCUIT .............................................................................................. 4
5. REFERENCE CLOCK ......................................................................................... 4
5.1. Quartz Crystal ............................................................................................. 4
5.2. External Reference ..................................................................................... 4
6. LED INDICATORS ............................................................................................... 5
7. BUFFERING ........................................................................................................ 5
8. TRANSFORMER SELECTION ............................................................................ 5
9. PROTOTYPING AREA ........................................................................................ 5
10. EVALUATION HINTS .......................................................................................... 6
11. CDB61581 SOFTWARE ...................................................................................... 7
11.1. Configure PC .............................................................................................. 7
11.2. Configure Part ............................................................................................. 7
11.3. Control Register Configuration ................................................................... 7
11.4. Transmitter Ram Configuration ................................................................... 9
11.5. Modify Unit Interval ................................................................................... 10
LIST OF FIGURES
Figure 1. Register Configuration Window ......................................................................... 8
Figure 2. Transmitter RAM Configuration Window ........................................................... 9
Figure 3. Modify Unit Interval Window ............................................................................ 10
Figure 4. CDB61581 Evaluation Board Schematic ........................................................ 11
Figure 5. Board Layout - Top Layer ............................................................................... 12
Figure 6. Board Layout - Bottom Laver .......................................................................... 13
Figure 7. Evaluation Board Silkscreen ........................................................................... 14
LIST OF TABLES
Table 1. LATN Settings ...................................................................................................... 5
Table 2. Transformer and Resistor Options ....................................................................... 5
Table 3. Jumper Selections................................................................................................ 6
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts/
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-
mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information
contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of
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