SY10 Raltron, SY10 Datasheet
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SY10 Summary of contents
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... Small dimensions of 1.82 x 1.82 x 0.7 inch. (0.60 inch with no mechanical cover) APPLICATION The SY10, a Synchronous Equipment Clock (SEC), fulfills clock regeneration function for STRATUM 3 and 3E equipment for: ATM, SDH, PDH, and SONET networks. It was designed for network system manufacturers such as: Access Switches, Core Switches, Cross Connects, Digital Multiplexers-Exchangers, and SDH/SONET equipment ...
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... Control Inputs DESCRIPTION The SY10 synchronization module is a Digital PLL (DPLL), which utilizes application specific software in the digital signal processor (DSP). The DSP is complemented by fast hardware logic (FPGA) where all multiplexers, counters, dividers, phase detectors, output frequency converters and other control logic circuits are completely implemented. The functional block diagram with maximum configuration is shown in figure 1. The module has three phase lock loop – ...
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... Holdover Mode is typically used while the network synchronization is temporarily disrupted. In Holdover Mode, the SY10 provides timing, based on data from the history buffer, while unlocked to an external reference signal. The history data is determined while the device is locked to an external reference signal. The stability of the output signal in holdover mode depends primarily on the stability of on-board oscillator and environment effects where the clock is mounted ...
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... The history buffer is actually a circular buffer in memory that keeps valid data for HOLDOVER mode during the last 90 seconds of operation. When the SY10 enters to HOLDOVER mode the data from the buffer is validated and processed. The history buffer can be cleared by writing one to bit HLRST in CFG2 register ...
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... After the reset the module is set to use three external control pins for control function but user can change it by setting bit UI in register CFG1. By setting the UI bit to 1 the module ignores states of the control pins and use bits in CFG1 register for state engine control. On the figure below is shown simplified stated diagram of SY10 module. 5 ...
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... RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com SYNCHRONOUS EQUIPMENT STRATUM 3/3E CLOCK UNIT – SY10 th St § Florida 33172 § U.S.A. 6 ...
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... SY10 Master-Slave Operation – Secondary PLL In systems where clock redundancy is required it is possible to connect two SY10 – such connection shown at the figure below. The module has two pins dedicated for this feature – MS/FR and SEC IN. The MS/FR control input selects if the module will operate as master (logic high) or slave in the system. The SEC IN is input for signal that comes from another clock module. In the system always clock “ ...
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... On the figure below is shown simplified stated diagram of SY10 Master –Slave operation. 1. (MASTER) The path 1 runs until control signals MS/FR† is set to 1 (or MS bit in CFG1 register is set there is no valid signal at SEC IN pin. No valid signal means either not present or not within frequency offset window. ...
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... Changing mode of operation can be done easier using SPI communication interface – please see next paragraph. For other configuration please contact Raltron Electronics Corp. RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 CLK signal Sampes 100ms ...
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... DOUT are ports used to transfer command and data in and out of the module. The SCLK is input used to clock the data transfer in and out of the module and MS/FR is shared pin that provides frame synch signal. The SY10 operates only as a slave device on SPI bus so the transfer of the data or command should be initiated by a micro- controller ...
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... Fetch data from MMR to send out SPIStatus = OK Wait for the next byte Timing diagrams RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 ...
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... SCLK DIN A4 DOUT MS/FR RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 is approximately 1sec. The SPI will latch data on input DIN out 1ms). wait t out t dh ...
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... The default values are: PR1:0x78h PR2:0x56h PR3:0x34h PR4:0x12h Frequency Shift Registers (RFH1-RFH8) - address 04-0Bh. RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 Format R22 ...
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... The possible reference bits are: PS7-PS4 RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 ...
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... There are 4 bits to set 10 modes of operation: CON3 RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 No reference in use (module in Free run or Holdover) Reference 1 Reference 2 Reference 3 Reference 4 Reference 5 ...
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... BW11 and BW12 registers determine the tracking bandwidth of the primary PLL. There four sets of bits each one representing the corresponding tracking bandwidth. The table below shows the available combinations. RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 ...
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... Customer ID Register (CID) – address 19h The CID register contains unique customer identification number. The default value: CID: 0x03h. RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com STRATUM 3/3E CLOCK UNIT – SY10 ...
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... Clock Card (STATUS 1 and STATUS 2) are distributed to all Line Cards. The STATUS 1 and 2 signals are HOLDOVER (pin 1 at SY10), FREERUN (pin 7), ALARM OUT (pin 11) and PLL UNLOCK (pin 17) and they are connected to the corresponding pins at SY05 modules. For a particular application or a timing application that best fits to you please contact Raltron ...
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... Lock accuracy RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com SYNCHRONOUS EQUIPMENT STRATUM 3/3E CLOCK UNIT – SY10 1.82” (D) x 1.82” (W) x 0.70” (H) 1.8” (D) x 1.8” (W) x 0.60” (H) 3.3VDC 700mA max @ 25°C 400mA max. @ 25° ...
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... External Reference 1 Input -> the input signal from reference REF 5 External Reference 5 Input -> the input signal from reference 5 RALTRON ELECTRONICS CORP. § 10651 N.W.19 Tel: 305 593-6033 § Fax: 305-594-3973 § e-mail: sales@raltron.com § Internet: http://www.raltron.com SYNCHRONOUS EQUIPMENT STRATUM 3/3E CLOCK UNIT – SY10 34 1 HOLDOVER ...
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... MECHANICAL DIMENSIONS 1.82 SQ. (46.23 SQ.) 1 MARKING AREA Figure 11 shows the mechanical dimension of the SY10 module. The module can be supplied in two different types of packaging: - Metal box - Module without packaging The label on the module shows part number, factory name, week and year of production. Without metal cover maximum height reaches 0.60” ...