ACS9522
ACS9522
There are many applications in which it is necessary to lock a remote clock signal to a central frequency source, and there are other applications which require the alignment of a clock to a central source of time. The ACS9522 combines DAPU's synchronous equipment timing source (SETS) functionality and DPSync packet timing technology and can therefore be used for both applications. It supports dual-master and dual slave with internal SDRAM.
Device features
Fully integrated - integrates hardware precision timestamping with on-the-fly insertion. Powerful integrated processor and clock recovery algorithm for PTP.
Timing synchronization on a chip - supporting transitions from legacy circuit networks to new packet technology.
Suitable applications - Stratum 3, 3E, 4E, 4, SONET Minimum Clock (SMC) or SONET/SDH Equipment Clock(SEC) or Ethernet, IEEE1588 PTP, Synchronous Ethernet, Ethernet Equipment Clock.
Clocks - 18 clock inputs and 11 clock outputs.
Precision holdover - in all modes.
Ports - 2 x SGMII, serial interface and JTAG.
Time-of-day - PPnS top-of-second signal plus current-time-since-epoch message on a UART.
Output characteristics:
Time-aligned output:
1 PPS and 125 MHz divided by n (n = 4 to 125000).
Frequency-aligned outputs:
1 Hz and programmable frequency 1 kHz to 62.5 MHz.
Low jitter frequency-aligned outputs:
SONET and SDH OC-n rates: 3.84 MHz to 155.52 MHz.
SyncE rates: 25 MHz, 50 MHz, 62.5 MHz and 125 MHz.
Local oscillator: ±20 ppm or better.
LBGA package: 324 pin, 19 mm x 19 mm.
Lead-free - RoHS and WEEE compliant.
External RAM not required.
Application
