WAN PLL WITH DUAL REFERENCE INPUTS IDT82V3002A FEATURES Holdover frequency accuracy of 0.025 ppm Supports AT&T TR62411 and Telcordia GR-1244-CORE Stra- Phase slope of 5 ns/125 s tum 3, Stratum 4 Enhanced and Stratum 4 timing for DS1 Attenuates wander from 2.1 Hz interfaces Fast Lock mode Supports ITU-T G.813 Option 1 clocks for 2048 kbit/s inter- Provides Time Interval Error (TIE) correction faces MTIE of 600 ns Supports ITU-T G.812 Type IV clocks for 1544 kbit/s interface JTAG boundary scan and 2048 kbit/s interfaces Holdover status indication Supports ETSI ETS 300 011, TBR 4, TBR 12 and TBR 13 tim- Freerun status indication ing for E1 interface Normal status indication Selectable input reference signal: 8 kHz, 1.544 MHz or 2.048 Lock status indication MHz Input primary reference quality indication Accepts reference inputs from two independent sources 3.3 V operation with 5 V tolerant I/O Provides eight types of clock signals: C1.5o, C3o, C2o, C4o, Package available: 56-pin SSOP (Green option available) C6o, C8o, C16o and C32o Provides six types of 8 kHz framing pulses: F0o, F8o, F16o, F32o, RSP and TSP DESCRIPTION The IDT82V3002A is a WAN PLL with dual reference inputs. It Type IV clocks for 1544 kbit/s interface and 2048 kbit/s interface. It meets contains a Digital Phase-Locked Loop (DPLL), which generates ST-BUS the jitter/wander tolerance, jitter/wander transfer, intrinsic jitter/wander, clocks and framing signals that are phase locked to a 2.048 MHz, 1.544 frequency accuracy, capture range, phase change slope, holdover MHz or 8 kHz input reference. frequency accuracy and MTIE (Maximum Time Interval Error) The IDT82V3002A provides eight types of clock signals (C1.5o, C3o, requirements for these specifications. C6o, C2o, C4o, C8o, C16o, C32o) and six types of framing signals (F0o, The IDT82V3002A can be used in synchronization and timing control F8o, F16o, F32o, RSP, TSP) for the multitrunk T1 and E1 primary rate for T1 and E1 systems, or used as ST-BUS clock and frame pulse transmission links. sources. It can also be used in access switch, access routers, ATM edge The IDT82V3002A is compliant with AT&T TR62411, Telcordia GR- switches, wireless base station controllers, or IADs (Integrated Access 1244-CORE Stratum 3, Stratum 4 Enhanced and Stratum 4, ETSI ETS Devices), PBXs and line cards. 300 011, ITU-T G.813 Option 1 for 2048 kbit/s interface, and ITU-T G.812 IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. 1 October 15, 2008 2006 Integrated Device Technology, Inc. DSC-6243/4IDT82V3002A WAN PLL WITH DUAL REFERENCE INPUT FUNCTIONAL BLOCK DIAGRAM V V V V V V V V V V OSCi OSCo TCLR DDD SS DDD SS DDD SS DDA SS DDA SS C32o OSC C16o Virtual C8o Fref0 TIE Control Reference Reference C4o Fref1 Input Switch Block C2o C3o IN sel C1.5o FLOCK DPLL C6o Reference F0o MON out Input Monitor F8o F16o F32o RST Invalid Input RSP Signal TSP Feedback Detection Signal LOCK TDI TMS Frequency Select JTAG State Control Circuit Circuit TRST TCK TDO TIE en MODE sel1 MODE sel0 NORMAL HOLDOVER FREERUN F sel1 F sel0 Figure - 1 Block Diagram FUNCTIONAL BLOCK DIAGRAM 2 October 15, 2008