78P2352 Dual Channel OC-3/ STM1-E/ E4 LIU DATA SHEET SEPTEMBER 2006 DESCRIPTION FEATURES The 78P2352 is Teridians second generation Line ITU-T G.703 compliant cable driver for 139.264 Interface Unit (LIU) for 155 Mbps SDH/SONET Mbps or 155.52 Mbps CMI-coded coax (OC-3, STS-3, or STM-1) and 140 Mbps PDH (E4) transmission telecom interfaces. The device is a dual channel, Integrated adaptive CMI equalizer and CDR in single chip solution that includes an integrated CDR receive path handles over 12.7dB of cable loss in the transmit path for flexible NRZ to CMI Serial, LVPECL system interface with integrated conversion. The device can interface to 75 coaxial CRU in transmit path for flexible NRZ to CMI cable using CMI coding or directly to a fiber optics conversion. transceiver module using NRZ coding. The 4-bit parallel CMOS system interface with 78P2352 is compliant with all respective ANSI, ITU- master and slave Tx clock modes. T, and Telcordia standards for jitter tolerance, Selectable LVPECL compatible NRZ media generation, and transfer. interface for 155.52 Mbps optical transmission. Configurable via HW control pins or 4-wire serial port interface APPLICATIONS Compliant with ANSI T1.105.03-1994 ITU-T Central Office Interconnects G.751, G.813, G.823, G.825, G.958 and DSLAMs Telcordia GR-253-CORE for jitter performance. Add Drop Multiplexers (ADMs) Receiver Loss of Signal (LOS) detection Multi Service Switches compatible with ITU-T G.783 Digital Microwave Radios Operates from a single 3.3V supply Standard and thermally enhanced 128-pin JEDEC LQFP package options BLOCK DIAGRAM EACH CHANNEL: Tx Lock Detect ECLxP/N Tx CDR SIxDP/N TXxCKP/N FIFO CMI Encoder SIxCKP/N CMIxP/N PIxCK PIx 3:0 D PMOD, SMOD 1:0 , PAR PTOxCK RLBK SOxCKP/N SOxDP/N CMI Rx CDR Decoder Adaptive RXxP/N POx 3:0 D Eq. Lock Detect POxCK LOS Detect CMI LLBK EACH CHANNEL: Rx Page: 1 of 42 2006 Teridian Semiconductor Corporation Rev. 2.4 78P2352 Dual Channel OC-3/ STM1-E/ E4 LIU TABLE OF CONTENTS ................................................................................................2 FUNCTIONAL DESCRIPTION........................................................................................4 MODE SELECTION................................................................................................................................4 REFERENCE CLOCK ............................................................................................................................4 RECEIVER OPERATION .......................................................................................................................4 Receiver Monitor Mode ..................................................................................................................4 Receive Loss of Signal ..................................................................................................................5 Receive Loss of Lock.....................................................................................................................5 TRANSMITTER OPERATION................................................................................................................5 Synchronous (Re-timing) Tx Serial Modes ..................................................................................5 Plesiochronous Serial Modes .......................................................................................................6 Synchronous Parallel Modes ........................................................................................................6 Transmit FIFO Description ............................................................................................................6 Transmit Driver ...............................................................................................................................7 Clock Synthesizer...........................................................................................................................7 Transmit Backplane Equalizer ......................................................................................................7 Transmit Loss of Lock ...................................................................................................................7 POWER-DOWN FUNCTION .................................................................................................................7 ANALOG LOOPBACK MODES.............................................................................................................7 POWER-ON RESET ..............................................................................................................................7 SERIAL CONTROL INTERFACE .........................................................................................................8 PROGRAMMABLE INTERRUPTS ........................................................................................................8 REGISTER DESCRIPTION.............................................................................................9 REGISTER ADDRESSING.....................................................................................................................9 REGISTER TABLE.................................................................................................................................9 LEGEND ...............................................................................................................................................10 GLOBAL REGISTERS .........................................................................................................................10 ADDRESS 0-0: MASTER CONTROL REGISTER.......................................................................10 ADDRESS 0-1: INTERRUPT CONTROL REGISTER..................................................................11 PORT-SPECIFIC REGISTERS ............................................................................................................12 ADDRESS N-0: MODE CONTROL REGISTER...........................................................................12 ADDRESS N-1: SIGNAL CONTROL REGISTER........................................................................13 ADDRESS N-2: ADVANCED TX CONTROL REGISTER 1 ........................................................14 ADDRESS N-3: ADVANCED TX CONTROL REGISTER 0 ........................................................14 ADDRESS N-4: MODE CONTROL REGISTER 2........................................................................14 ADDRESS N-5: STATUS MONITOR REGISTER........................................................................15 PIN DESCRIPTION .......................................................................................................16 LEGEND ...............................................................................................................................................16 TRANSMITTER PINS...........................................................................................................................16 RECEIVER PINS ..................................................................................................................................17 REFERENCE AND STATUS PINS ......................................................................................................18 CONTROL PINS ..................................................................................................................................19 SERIAL-PORT PINS ............................................................................................................................21 POWER AND GROUND PINS .............................................................................................................21 Page: 2 of 42 2006 Teridian Semiconductor Corporation Rev. 2.4