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Part: DS21Q58
Category:
Communication
-> Network
-> T/E Carrier and Packetized Products
Description: DS21Q58 E1 Quad Transceiver
Company: Maxim Integrated Products
Datasheet: Download DS21Q58 datasheet File size : 93 kB
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Datasheet text preview:
DS21Q58 E1 Quad Transceiver
www.maxim-ic.com
GENERAL DESCRIPTION
The DS21Q58 E1 quad transceiver contains all the necessary functions for connecting to four E1 lines. The DS21Q58 is a direct replacement for the DS21Q50, with the addition of signaling access and improved interrupt handling. It is composed of a line interface unit (LIU), framer, and a TDM backplane interface, and is controlled through an 8-bit parallel port configured for Intel or Motorola bus operations or serial port operation.
FEATURES
§ § § § § § § § § Four Complete E1 (CEPT) PCM-30/ISDN-PRI Transceivers Pin Compatible with the DS21Q50 and DS21Q59 Short-Haul Line Interfaces 32-Bit or 128-Bit Crystal-Less Jitter Attenuator Frames to FAS, CAS, and CRC4 Formats CAS/CCS Signaling Support 4MHz/8MHz/16MHz Clock Synthesizer Flexible System Clock with Automatic Source Switching on Loss-of-Clock Source Two-Frame Elastic-Store Slip Buffer on the Receive Side Interleaving PCM Bus Operation Up to 16.384MHz Configurable Parallel and Serial Port Operation Detects and Generates Remote and AIS Alarms Fully Independent Transmit and Receive Functionality Four Separate Loopback Functions PRBS Generation/Detection/Error Counting 3.3V Low-Power CMOS Large Counters for Bipolar and Code Violations, CRC4 Codeword Errors, FAS Word Errors, and E Bits Eight Additional User-Configurable Output Pins 100-Pin (14mm) LQFP Package
APPLICATIONS
DSLAMs Routers IMA and WAN Equipment
§ § § § § § § §
PIN CONFIGURATION
TOP VIEW
Dallas Semiconductor
DS21Q58
§
100 1
§
LQFP
ORDERING INFORMATION
PART DS21Q58L TEMP RANGE 0°C to +70°C -40°C to +85°C PIN-PACKAGE 100 LQFP 100 LQFP
Go to www.maxim-ic.com/telecom for a complete list of Telecommunications data sheets, evaluation kits, application notes, and software downloads.
DS21Q58LN
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
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REV: 062003
DS21Q58 E1 Quad Transceiver
TABLE OF CONTENTS
1. 2. 3. 4.
4.1
ACRONYMS ..... 6 DETAILED DESCRIPTION.......6 BLOCK DIAGRAM .... 7 PIN DESCRIPTION....8
PIN FUNCTION DESCRIPTIONS............12
5. 6.
6.1 6.2
FUNCTIONAL DESCRIPTION ........ 13 HOST INTERFACE PORT......14
PARALLEL PORT OPERATION .............14 SERIAL PORT OPERATION...14
7. 8.
8.1 8.2 8.3 8.4 8.5
REGISTER MAP......16 CONTROL, ID, AND TEST REGISTERS ....... 17
POWER-UP SEQUENCE.......18 FRAMER LOOPBACK ...........21 AUTOMATIC ALARM GENERATION .......22 REMOTE LOOPBACK ...........22 LOCAL LOOPBACK .....23
9.
9.1 9.2
STATUS AND INFORMATION REGISTERS .......... 27
INTERRUPT HANDLING ........28 CRC4 SYNC COUNTER.......29
10.
ERROR COUNT REGISTERS.........34
BPV OR CV COUNTER ....34 CRC4 ERROR COUNTER ..........34 E-BIT/PRBS BIT-ERROR COUNTER .........35 FAS ERROR COUNTER....35 RECEIVE SIGNALING........36 TRANSMIT SIGNALING......36 CAS OPERATION ............36
10.1 10.2 10.3 10.4
11.
SIGNALING OPERATION......36
11.1 11.2 11.3
12. 13. 14. 15. 16.
DS0 MONITORING FUNCTION ...... 37 PRBS GENERATION AND DETECTION.......39 SYSTEM CLOCK INTERFACE ....... 40 TRANSMIT CLOCK SOURCE.........41 IDLE CODE INSERTION ........ 41
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DS21Q58 E1 Quad Transceiver
17. 18. 19. 20. 21.
PER-CHANNEL LOOPBACK ......... 42 ELASTIC STORE OPERATION ...... 42 ADDITIONAL (Sa) AND INTERNATIONAL (Si) BIT OPERATION..........43 USER-CONFIGURABLE OUTPUTS ........ 45 LINE INTERFACE UNIT ......... 47
RECEIVE CLOCK AND DATA RECOVERY ....47
Termination ..........47 21.1.1
21.1 21.2 21.3
21.3.1 21.3.2
TRANSMIT WAVESHAPING AND LINE DRIVING ...........48 JITTER ATTENUATORS .....50
Clock and Data Jitter Attenuators .........50 Undedicated Clock Jitter Attenuator ...........51
22. 23. 24.
CODE MARK INVERSION (CMI) .... 52 INTERLEAVED PCM BUS OPERATION ....... 54 FUNCTIONAL TIMING DIAGRAMS.........56
RECEIVE..........56 TRANSMIT..............58
24.1 24.2
25. 26.
OPERATING PARAMETERS..........61 AC TIMING PARAMETERS AND DIAGRAMS ....... 62
MULTIPLEXED BUS AC CHARACTERISTICS.........62 NONMULTIPLEXED BUS AC CHARACTERISTICS ........65 SERIAL PORT .........67 RECEIVE AC CHARACTERISTICS .....68 TRANSMIT AC CHARACTERISTICS ............70 SPECIAL MODES AC CHARACTERISTICS ...71
26.1 26.2 26.3 26.4 26.5 26.6
27. 28.
PACKAGE INFORMATION....72 REVISION HISTORY ........ 73
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DS21Q58 E1 Quad Transceiver
LIST OF FIGURES
Figure 3-1. Block Diagram ..... 7 Figure 6-1. Serial Port Operation Mode 1 .....14 Figure 6-2. Serial Port Operation Mode 2 .....15 Figure 6-3. Serial Port Operation Mode 3 .....15 Figure 6-4. Serial Port Operation Mode 4 .....15 Figure 21-1. External Analog Connections (Basic Configuration) ..48 Figure 21-2. External Analog Connections (Protected Interface) ...49 Figure 21-3. Transmit Waveform Template ...........50 Figure 21-4. Jitter Tolerance..........51 Figure 21-5. Jitter Attenuation .......51 Figure 22-1. CMI Coding ......52 Figure 22-2. Example of CMI Code Violation (CV)..........53 Figure 23-1. IBO Configuration Using Two DS21Q58 Transceivers (Eight E1 Lines)......55 Figure 24-1. Receive Frame and Multiframe Timing .......56 Figure 24-2. Receive Boundary Timing (With Elastic Store Disabled).....56 Figure 24-3. Receive Boundary Timing (With Elastic Store Enabled) .....56 Figure 24-4. Receive Interleave Bus Operation .....57 Figure 24-5. Transmit Frame and Multiframe Timing ......58 Figure 24-6. Transmit Boundary Timing........58 Figure 24-7. Transmit Interleave Bus Operation ....58 Figure 24-8. Framer Synchronization Flowchart ....59 Figure 24-9. Transmit Data Flow ...60 Figure 26-1. Intel Bus Read AC Timing (PBTS = 0)........63 Figure 26-2. Intel Bus Write Timing (PBTS = 0).....63 Figure 26-3. Motorola Bus AC Timing (PBTS = 1) ..........64 Figure 26-4. Intel Bus Read Timing (PBTS = 0).....65 Figure 26-5. Intel Bus Write Timing (PBTS = 0).....66 Figure 26-6. Motorola Bus Read Timing (PBTS = 1).......66 Figure 26-7. Motorola Bus Write Timing (PBTS = 1).......66 Figure 26-8. Serial Bus Timing (BTS1 = 1, BTS0 = 0) ..........67 Figure 26-9. Receive AC Timing (Receive Elastic Store Disabled) .........68 Figure 26-10. Receive AC Timing (Receive Elastic Store Enabled) ........69 Figure 22-11. Transmit AC Timing (IBO Disabled)..........70 Figure 22-12. Transmit AC Timing (IBO Enabled) ..........71 Figure 26-13. NRZ Input AC Timing .............71
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DS21Q58 E1 Quad Transceiver
LIST OF TABLES
Table 4-A. Pin Description (Sorted by Function) ..... 8 Table 4-B. Pin Assignments (Sorted by Number) ..10 Table 4-C. System (Backplane) Interface Pins ......12 Table 4-D. Alternate Jitter Attenuator ...........12 Table 4-E. Clock Synthesizer ........12 Table 4-F. Parallel Port Control Pins ............12 Table 4-G. Serial Port Control Pins.........13 Table 4-H. Line Interface Pins .......13 Table 4-I. Supply Pins ..........13 Table 6-A. Bus Mode Select ..........14 Table 7-A. Register Map (Sorted by Address) .......16 Table 8-A. Sync/Resync Criteria....19 Table 8-B. G.703 Function....24 Table 8-C. Output Modes .....25 Table 9-A. Alarm Criteria ......29 Table 13-A. Transmit PRBS Mode Select.....39 Table 13-B. Receive PRBS Mode Select......39 Table 14-A. Synthesizer Output Select .........40 Table 14-B. System Clock Selection.............40 Table 20-A. OUTA and OUTB Function Select ......46 Table 21-A. Line Build-Out Select in LICR....48 Table 21-B. Transformer Specifications........48 Table 23-A. IBO System Clock Select ..........54 Table 23-B. IBO Device Assignment ............54 Table 26-A. AC Characteristics--Multiplexed Parallel Port ............62 Table 26-B. AC Characteristics--Nonmultiplexed Parallel Port .....65 Table 26-C. AC Characteristics--Serial Port (BTS1 = 1, BTS0 = 0) .......67 Table 26-D. AC Characteristics--Receive ....68 Table 26-E. AC Characteristics--Transmit ............70 Table 26-F. AC Characteristics--Special Modes ...71
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