ZL30701,ZL30702,ZL30703,ZL30704
IEEE 1588 & Synchronous Ethernet Packet Single Channel Clock Network Synchronizer
Overview
The ZL30701, ZL30702, ZL30703, and ZL30704 offer one to four independent timing channels of a combined hardware and software platform including IEEE 1588-2008 Precision Time Protocol Stack and Synchronization Algorithms. These devices provide a highly integrated Synchronous Ethernet / IEEE 1588 timing solution with one third the jitter of previous generation devices with a 40% smaller footprint, making these devices ideal for timing card applications in systems that need to support 10G/40G and 100G Phys.
Key Features
- Up to four independent clock channels
- Fully compliant to EEC (G.8262), SEC (G.813), GR-253 SMC and GR-1244 Stratum 3/3E
- Frequency accuracy performance for GSM, WCDMAFDD, LTE-FDD basestations and small cell applications, with target performance less than ± 15 ppb
- Frequency performance for ITU-T G.823 and G.824 synchronization interface, as well as G.8261 PNT EEC, PNT PEC and CES interface specifications
- Phase Synchronization performance for WCDMA-TDD, TD-SCDMA, CDMA2000, LTE-TDD and LTE-A applications with target performance less than ± 1 μs phase alignment
- Client holdover and reference switching between multiple Servers
- Support for new ITU-T packet clock recommendations or drafts: G.8263 PEC-S, G.8273.2 T-BC, T-TSC, G.8273.4 T-BC-P, T-TSC-P & T-TSC-A
- Excellent jitter performance of 180 fs RMS (12 kHz to 20 MHz) meets 10G/40G and 100G PHY jitter requirements
- Up to four programmable digital PLLs/NCOs with loop bandwidth from 0.1 mHz to 470 Hz synchronize to any clock rate from 0.5 Hz to 900 MHz
- Automatic hitless reference switching and digital holdover on reference fail with initial holdover accuracy better than 0.1 ppb
- Any input reference can be fed with clock, sync (frame pulse), clock /sync pair or clock modulated with sync pulse (embedded PPS ePPS and embedded PP2S ePP2S)
- Easy configuration and dynamic programming via SPI/I2C interface
- Operates from a single crystal resonator or clock oscillator
Resources
Applications
Applications/Uses
- ITU-T G.8262 System Timing Cards which support 1 GbE and 10 GbE interfaces
- Telcordia GR-253 Carrier Grade SONET/SDH Stratum 3 System Timing Cards
- System Timing Cards which supports ITU-T G.781 SETS (SDH Equipment Timing Source)
- Integrated basestation reference clock for air interface for GSM, WCDMA, LTE and WiMAX macro, micro or femtocells
- Mobile Backhaul NID, edge router or access aggregation node
- EPON/GE-PON & GPON OLT
- EPON/GE-PON & GPON ONU/OLT
- DSLAM and RT-DSLAM
- 10 Gigabit line cards
- Synchronous Ethernet, 10 GBASE-R and 10 GBASE-W
- SONET/SDH, Fibre Channel, XAUI
Timing Card Example

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