DESIGN KIT AVAILABLE DS3141/DS3142/DS3143/DS3144 Single/Dual/Triple/Quad DS3/E3 Framers www.maxim-ic.com GENERAL DESCRIPTION FEATURES The DS3141, DS3142, DS3143, and DS3144 One/Two/Three/Four Independent DS3/E3 (DS314x) devices include all necessary circuitry to Framers on a Single Die frame and format up to four separate DS3 or E3 Framing and Formatting to M23 DS3, C-Bit Parity channels. Each framer in these devices is DS3, and G.751 E3 independently configurable to support M23 DS3, LIU Interface can be Binary (NRZ) or Dual-Rail C-Bit Parity DS3, or G.751 E3. The framers interface (POS/NEG) to a variety of line interface units (LIUs), B3ZS/HDB3 Encoder and Decoder microprocessor buses, and other system Generate and Detect DS3/E3 Alarms components without glue logic. Each DS3/E3 framer Integrated HDLC Controller for Each Channel has its own HDLC controller, FEAC controller, and Integrated FEAC Controller for Each Channel BERT, as well as full support for error detection and generation, performance monitoring, and loopbacks. Integrated Bit Error-Rate Tester (BERT) for Each Channel Large Performance-Monitoring Counters APPLICATIONS Line, Diagnostic, and Payload Loopbacks SONET/SDH Muxes Externally Controlled Transmit Overhead PDH Muxes Insertion Port Digital Cross-Connect Systems Support External Timing or Loop-Timing Access Concentrators ATM and Frame Relay Equipment Framers can be Powered Down When Not Used Routers 8-Bit Processor Port Supports Muxed or Nonmuxed Bus Operation (Intel or Motorola) FUNCTIONAL DIAGRAM 3.3V Supply with 5V Tolerant I/O 144-Pin, 13mm x 13mm CSBGA Package IEEE 1149.1 JTAG Support LIU SYSTEM EACH FRAMER INTERFACE INTERFACE ORDERING INFORMATION CLK POS/NRZ TRANSMIT DATA NEG NO. OF SYNC FORMATTER CLK PART TEMP RANGE PIN-PACKAGE FRAMERS OVERHEAD DS3141 1 0C to +70 C 144 CSBGA POS/NRZ CLK DS3141N 1 144 CSBGA -40C to +85 C RECEIVE NEG/LCV DATA DS3142 2 144 CSBGA 0C to +70 C CLK FRAMER SYNC DS3142 2 -40C to +85 C 144 CSBGA Dallas DS3143 3 0C to +70 C 144 CSBGA Semiconductor DS3143N 3 144 CSBGA -40C to +85 C DS314x DS3144 4 0C to +70 C 144 CSBGA DS3144N 4 -40C to +85 C 144 CSBGA Pin Configurations appear at end of data sheet. 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. 1 of 88 REV: 012003 DS3141/DS3142/DS3143/DS3144 Single/Dual/Triple/Quad DS3/E3 Framers TABLE OF CONTENTS 1. BLOCK DIAGRAM.......................................................................................................................... 6 2. APPLICATION EXAMPLE .............................................................................................................. 6 3. MAIN FEATURES ........................................................................................................................... 7 4. STANDARDS COMPLIANCE ......................................................................................................... 8 5. PIN DESCRIPTION ......................................................................................................................... 9 5.1 TRANSMIT FORMATTER LIU INTERFACE PINS................................................................................. 9 5.2 RECEIVE FRAMER LIU INTERFACE PINS......................................................................................... 9 5.3 TRANSMIT FORMATTER SYSTEM INTERFACE PINS ........................................................................ 10 5.4 RECEIVE FRAMER SYSTEM INTERFACE PINS ................................................................................ 12 5.5 CPU BUS INTERFACE PINS......................................................................................................... 14 5.6 JTAG INTERFACE PINS............................................................................................................... 14 5.7 SUPPLY, TEST, AND RESET PINS................................................................................................. 14 6. REGISTERS.................................................................................................................................. 15 6.1 STATUS REGISTER DESCRIPTION ................................................................................................ 17 7. FUNCTIONAL DESCRIPTION ...................................................................................................... 18 7.1 PIN INVERSIONS AND FORCE HIGH/LOW ...................................................................................... 18 7.2 TRANSMITTER LOGIC .................................................................................................................. 18 7.2.1 Transmit Clock ..................................................................................................................................... 18 7.2.2 Loss-of-Clock Detection....................................................................................................................... 19 7.3 RECEIVER LOGIC........................................................................................................................ 19 7.4 ERROR INSERTION...................................................................................................................... 20 7.5 LOOPBACKS............................................................................................................................... 20 7.5.1 Line Loopback...................................................................................................................................... 20 7.5.2 Diagnostic Loopback............................................................................................................................ 20 7.5.3 Payload Loopback................................................................................................................................ 20 7.5.4 BERT and Loopback Interaction .......................................................................................................... 20 7.6 COMMON AND LINE INTERFACE REGISTERS ................................................................................. 22 7.6.1 Master Status Register (MSR) ............................................................................................................. 28 7.7 DS3/E3 FRAMER ....................................................................................................................... 32 7.7.1 DS3/E3 Framer Register Description................................................................................................... 32 7.8 DS3/E3 PERFORMANCE ERROR COUNTERS................................................................................ 42 7.9 BERT........................................................................................................................................ 45 7.9.1 BERT Register Description .................................................................................................................. 45 7.10 HDLC CONTROLLER ............................................................................................................... 53 7.10.1 Receive Operation ............................................................................................................................... 53 2 of 88