1 of 3 proprietary & confidential GS12070 product brief rev.0 pds-060480 june 2014 gennum products GS12070 uhd-sdi gearbox www.semtech.com key features ? converts between 1.5g, 3g, 6g and 12g sdi ? quad link 3g-sdi ? 12gb/s ? dual link 6gb/s ? 12gb/s ? dual link (2 x 3gb/s) st 425-3 ? 6gb/s ? quad link (4 x 3gb/s) st 425-5/-6 ? dual link 6gb/s ? quad link hd-sdi (4 x 1.5gb/s) ? 6gb/s ? serial bypass modes for all support rates ? 4 serial differential inputs ? 100 differential inputs support dc-coupling to 1.2v cml logic ? input trace equalization for up to 6" fr4 at 12gb/s ? 4 serial differential outputs ? 100 differential outputs support dc-coupling to 1.2v cml logic ? output de-emphasis to compensate for up to 6" fr4 at 12gb/s ? reference clock/crystal input 148.5mhz/27mhz ? gspi serial control and monitoring interface ? selectable 1.8v and 2.5v digital control i/o ? automatic smpte st 352 packet creation ? 14mm x 14mm 256-ball bga (0.8mm pitch) ? pb-free and rohs-compliant package applications ? uhdtv1 and 4k d-cinema end-equipment: cameras, monitors, switchers description the GS12070 is an uhd-sdi gearbox which performs the multiplexing and de-multiplexin g necessary to facilitate conversions between the st 425-3 and st 425-5 multi-link 3gb/s uhd-sdi interface and the smpte st 2081 (6gb/s) and st 2082 (12gb/s) interfaces. a conversion between 4 x 1.5gb/s and 6gb/s is also supported. GS12070 supported conversions of smpte standard interfaces the GS12070 features four high-speed differential signal inputs and four high-speed differential serial outputs which can be interfaced to 1.2v cml i/o. the high-speed inputs and outputs include programmable trace equalization and de-emphasis drivers to compensate for high-frequency losses asso ciated with board-level interconnect. the high-speed serial inputs and outputs support 270mb/s, 1.5g, 3g, 6g and 12g nominal data rates. the supported conversions are performed by manually selecting the input and output rates. unused outp ut ports at 6g and 12g may be configured to output a co py of the prim ary converted output. a serial bypass mode is also available as a manually selectable option. 4x3g ? 12g 4x3g ? 2x6g 2x6g ? 12g st 2081-11 dual-link 6g st 2082-10 single-link 12g 3840 x 2160 p60 4:2:2 10-bit st 425-5 quad-link 3g
GS12070 product brief rev.0 pds-060480 june 2014 2 of 3 proprietary & confidential www.semtech.com GS12070 block diagram control, gspi ref clk/ xtal tx dd0_0 tx dd0_1 tx dd0_2 gspi v h pclk tx dd0_3 ddi_3 rx ddi_2 rx ddi_1 rx ddi_0 rx descrambler, wa; trs, st 352, ln, crc detection; raster calculation; mux/ demux st 352 & crc insertion crosspoint a_vdd a_gnd core_vdd core_gnd io_vdd io_gnd descrambler, wa; trs, st 352, ln, crc detection; raster calculation; descrambler, wa; trs, st 352, ln, crc detection; raster calculation; descrambler, wa; trs, st 352, ln, crc detection; raster calculation; ddi_0 ddi_1 ddi_2 ddi_3 dd0_0 dd0_1 dd0_2 dd0_3
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