EQCO125X40 Family 12.5 Gbps Asymmetric Equalizer/Driver/Repeater Product Brief is received by an auto-adaptive equalizer that compen- Features sates for higher-frequency losses in the preceding Equalizer for up to 40 m of coaxial cable at channel. A reference-less Clock-Data Recovery (CDR) 12.5 Gbps or 130 m at 1.25 Gbps over a single subsequently self-adapts to the incoming bit-rate and Belden 1694A coax cable resets the jitter back to a low value for maintaining sig- Same chip used at Device (Camera) and Host nal integrity. A cable driver launches this clean signal (Frame Grabber) for asymmetric full-duplex back onto a cable or PCB trace pair. When placed in communication series as a repeater, a signal can travel through several Lower Cost version EQCO125T40 for Device EQCO125X40 Family devices to the destination. The (Camera) side only EQCO125X40 CDR restores signal integrity at each Cable types supported are 75 coax, 50 coax, link along the way. and 100 STP (Shielded Twisted Pair) The high-speed direction (or downlink) has a simulta- Simultaneous signaling over a single cable: neous complementary uplink, operating at - Up to 12.5 Gbps downlink 20.833 Mbps or 41.666 Mbps 8b/10b coded signaling. - 21 or 42 Mbps uplink This uplink also includes an equalizer, a reference-less - Power over Coax CDR and a cable driver, operating with a transparent Can also be used as a stand-alone cable repeater full-duplex and self-adaptive downlink. with simultaneous power, downlink and uplink The EQCO125X40 Family can be used as a CoaX- over a single cable Press transmitter inside a camera, as a CoaXPress Integrated termination resistors for differential receiver inside a frame grabber and as a CoaXPress signaling repeater inside an active coax cable or link. It can also CDR (Clock-Data Recovery) restores signal be used as a generic high-speed signaling transport for integrity in both directions any 8b/10b application. In general it can be regarded as Both Uplink and Downlink include equalizer, CDR an ideal means for using the high bit-rate ports on an and Cable driver (see Figure 1-2) FPGA in real-world applications. This allows the high- Reference-clock free operation (no crystal or speed signal to get an increase in signal integrity along clock needed) its signaling path at strategic places: e.g. when chang- Low power consumption / single supply 1.25 V ing the signaling nature from single-ended to differen- 16-pin, 0.65 mm pin pitch, 4 mm QFN package tial or vice-versa, after long runs of cable, or recovering Small PCB footprint for EQCO125X40 Family with the signal from skin effect and/or dielectric losses. The few off-chip components CDR resets accumulated jitter due to small impedance mismatches, non-ideal connectors, PCB-vias, etc., and Industrial temperature range yields better signal integrity. This is also useful when Pb-free and RoHS compliant the signal chain includes an optical link. Applications CoaXPress compliant systems, supports all TYPICAL LINK PERFORMANCE CoaXPress standards and speeds Typical maximum cable length Links for high-definition Cameras for Belden (m) Links between FPGAs Bit-rate (Gbps) 1694A 4694R 4855R 4731R High-speed capture cards over long cable lengths 1.25 130 137 75 210 Machine Vision, Military, Aerospace, Medical, 2.5 110 118 64 180 Broadcast and Surveillance cameras, Intelligent Traffic Systems 3.125 100 108 60 160 When a single cable carrying power, video data 5 65 70 40 105 and camera control stream is needed 6.25 55 60 33 90 General Description 10 40 45 24 65 The EQCO125X40 is a single chip (equalizer, driver, reclocker) that repeats high-speed 8b/10b coded data 12.5 40 45 24 65 signals with a downstream bit-rate between 1.25 to 12.5 Gbps. From a cable or PCB trace pair, the signal 2020 Microchip Technology Inc. DS60001589D - page 1 JULY 2020EQCO125X40 Family TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our pub- lications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: