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GX3146 Dataheets PDF



Part Number GX3146
Manufacturers Semtech
Logo Semtech
Description 146 x 146 3.5Gb/s Crosspoint Switch
Datasheet GX3146 DatasheetGX3146 Datasheet (PDF)

GX3146 146 x 146 3.5Gb/s Crosspoint Switch with Trace Equalization and Output De-emphasis Key Features • 146 x 146 crosspoint switch architecture supporting broadcast and multi-cast modes • Supports all data rates up to 3.5Gb/s • Low power consumption: 19.45W typical (all channels active) • Sophisticated, dynamic on-chip power management control • Independent, programmable input trace equalization to reduce deterministic jitter (ISI) • Independent, programmable output de-emphasis for driving l.

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GX3146 146 x 146 3.5Gb/s Crosspoint Switch with Trace Equalization and Output De-emphasis Key Features • 146 x 146 crosspoint switch architecture supporting broadcast and multi-cast modes • Supports all data rates up to 3.5Gb/s • Low power consumption: 19.45W typical (all channels active) • Sophisticated, dynamic on-chip power management control • Independent, programmable input trace equalization to reduce deterministic jitter (ISI) • Independent, programmable output de-emphasis for driving long board traces • High-speed, video-optimized control for multi-format applications • Built-in system test features with on-chip PRBS generators and analyzers • 2.5V analog core voltage, 1.8V digital core voltage • Input and output voltages support either 1.2V, 1.8V or 2.5V CML • JTAG-controlled boundary scan • Selectable parallel/serial host interface • 50mm x 50mm BGA (2377 ball) • Operating temperature range: 0°C to +85°C • RoHS compliant Applications Large m x n cascaded routers/switch fabrics for: • Professional broadcast applications • Enterprise and carrier applications • High-speed automated test equipment • 10GbE and InfiniBand networks Description The GX3146 is a low-power, high-speed 146 x 146 crosspoint switch, with robust signal conditioning circuits for driving and receiving high-speed signals through backplanes. The device typically consumes 19.45W of power with all channels operational, and features sophisticated, dynamically scalable power management. Unused portions of the core are automatically turned off without affecting the operation of the remaining channels. The signal conditioning features of the GX3146 include per-input programmable equalization and per-output programmable de-emphasis. The input equalizer removes ISI jitter—typically caused by PCB trace losses—by opening the input data eye in applications where long PCB traces are used. There are four settings available for the input equalizer, allowing flexibility in adjusting the equalization level on a per-input basis. Output de-emphasis capability provides a boost of the high-frequency content of the output signal, such that the data eye remains open after passing through a long interconnect of PCB traces and connectors. There are four de-emphasis settings that can be enabled on a per-output basis. Two integrated programmable pattern generators, and two pattern checkers are provided to assist in system test and configuration. The pattern generators can each be routed to any output of the device without impacting the normal operation of any other channel. Any input can be routed to each of the pattern checkers. The chip features eight independent strobe inputs, UPDATE_EN[7:0], which are used to determine the timing of the output updates. Any output can be linked to any strobe. GX3146 146 x 146 3.5Gb/s Crosspoint Final Data Sheet Rev. 2 GENDOC-056075 March 2013 www.semtech.com 1 of 46 Proprietary & Confidential TDI TCK TMS TDO HOST_S/P SDIN SCLK RESET S_CS SDOUT P_DAT P_ADS [15:0] P_ADD P_CS P_R/W [11:0] JTAG and Boundary Scan SDI[0]/SDI[0] Trace EQ Input 0 Parallel/Serial Interfaces and General Registers Input Configuration Latch Active Configuration Latch UPDATE_EN[7:0] De-Emp Output 0 SDO[0]/SDO[0] SDI[287]/SDI[287] Trace EQ Input 143 EXT_PG0/EXT_PG0 Trace EQ Input 144 EXT_PG1/EXT_PG1 Trace EQ Input 145 146 x 146 Differential Cross-point Switch Matrix Programmable Pattern Generator 1 Programmable Pattern Generator 0 Pattern Checker & Status Monitor 1 Pattern Checker & Status Monitor 0 De-Emp Output 143 SDO[287]/SDO[287] De-Emp Output 144 MON0/MON0 De-Emp Output 145 MON1/MON1 Reference Clock/Crystal Buffer REF_CLK_IN REF_CLK_OUT GX3146 Functional Block Diagram GX3146 146 x 146 3.5Gb/s Crosspoint Final Data Sheet Rev. 2 GENDOC-056075 March 2013 www.semtech.com 2 of 46 Proprietary & Confidential Revision History Version 2 ECO 011839 1 158396 0 157406 B 157284 A 156479 PCN – – – – – Date Changes and/or Modifications March 2013 October 2012 February 2012 November 2011 July 2011 Corrected second bullet in Section 4.7.1, and added a note in Section 4.4. Included ESD Voltage Sensitivity in Table 2-1. Modifications to Table 4-18 and Section 4.12.2 to include Auto-Increment Timing and functionality. Updates to Appendix - Relevant Documentation with clear reference to correct documents. Converted document to Data Sheet. Converted document to Preliminary Data Sheet. Updates throughout. Corrections throughout the entire document. New document. Contents 1. Ball Out .............................................................................................................................................................5 1.1 Ball Assignment ................................................................................................................................5 1.2 Ball Descriptions ................................................................................................................


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