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21324-dsh-001-c mindspeed technologies ? november 2009 mindspeed proprietary and confidential applications ? smpte coaxial cable interface ? studio video applications ? broadcast video applications ? distribution video applications standards compliance ? smpte 259m, smpte 292m, smpte 344m, smpte 424m complaint ? supports dvb-asi (270 mbps) the m21324 is a high-speed, low-power, adaptive co-axial cable equalizers designed to increase the maximum low-jitter transmission distance of serial digital interface (sdi) video signals and dvb-asi across commonly used bandwidth-limiting 75 coaxial cable. this device automatically optimizes the transfer function based on the bit rate and cable length to minimize the inter-symbol interference (isi) jitter caused by the cable and to remove the dc offset components introduced with the pathological test pattern and ac coupling in systems. the m21324 is designed to support 2xhd data rates from 143 mbps to 2970 mbps. the low-noise, high-gain equalizer allows for low jitter 2xhd transmissions up to 100m (belden 1694a) and hd transmissions up to a length of 200m (belden 1694a) and 120m (belden 8281). for sd data rates, cable lengths up to 400m (belden 1694a) and 300m (belden 8281) are supported. the m21324 shares the same footprint as the gs2974a, gs1574/gs1574a or gs9074a, except that the m21324 has a shared signal detect/mute function pin, while the gs2974a, gs1574/1574a and gs9074a have separate cd and mute pins. functional block diagram thresh sdi sdi equalizer core input buffer 0 1 dc restore output buffer sdo sdo control logic sd/ mute eq_ byp m21324 cable equalizer features ? adaptive cable equalization ? optimized data rate fr om 143 mbps to 2.97 gbps ? typical equalized length of belden 1694a cable: 100m at 2.97 gbps, 200m at 1.485 gbps, and 400m at 270 mbps ? programmable mute level ? manual bypass mode ? differential cml outputs (50 on-chip terminations) ? single 3.3v power supply ? small form factor (4 x4mm, 16-pin mlf package) ? pb-free and rohs compliant ? extended operating temperature range: ?10 to +85 c m21324 sd, hd, 2xhd cable equalizer
21324-dsh-001-c mindspeed technologies ? 2 mindspeed proprietary and confidential ordering information part number package operating data rate operating temperature M21324G-13* 16-pin mlf (rohs compliant) 143?2970 mbps ?10 c to 85 c * consult the price list for exact part number when ordering. * the letter ?g? designator after the part number indicates a rohs-compliant package. refer to www.mindspeed.com for additional information. revision history revision level date description c released november 2009 updated for -13 part. added marking diagram. b released august 2007 added ja (junction to ambient thermal resistance) to table 1-2 . a preliminary august 2007 preliminary release. m21324 marking diagram 32413 lot # date and country
21324-dsh-001-c mindspeed technologies ? 3 mindspeed proprietary and confidential table of contents ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 list of figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 list of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.0 product specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 general specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 1.2 input/output level specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 1.3 eq specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 1.4 package specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 1.4.1 mechanical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 1.5 manufactureability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 1.5.1 electrostatic discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 1.5.2 peak reflow temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 1.5.3 moisture sensitivity level (msl) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 1.6 design considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 1.6.1 thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 2.0 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.1 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 2.1.1 general nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 2.1.2 high-speed input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 2.1.3 high-speed outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 2.1.4 adaptive equalization selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 2.1.5 output mute and signal detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 2.1.6 equalizer detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 2.2 m21324 common signals by inte rface group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 2.2.1 m21324 pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 a.1 glossary of terms/acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 a.2 reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 a.2.1 external . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
21324-dsh-001-c mindspeed technologies ? 4 mindspeed proprietary and confidential list of figures figure 1-1. output symbols definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 figure 1-2. m21324 pin assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 figure 1-3. m21324 packaging details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 figure 2-1. single-ended typical input matching/termination networ k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 figure 2-2. test setup diagram for cable equalizer evaluation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
21324-dsh-001-c mindspeed technologies ? 5 mindspeed proprietary and confidential list of tables table 1-1. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 table 1-2. recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 table 1-3. power dc electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 table 1-4. cmos input electrical specifications (logic signals only ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 table 1-5. high speed input electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 table 1-6. high speed output electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 table 1-7. cable equalizer distance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 table 1-8. sd/mute specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 table 2-1. power pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 table 2-2. high-speed signal pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 table 2-3. control/interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
21324-dsh-001-c mindspeed technologies ? 6 mindspeed proprietary and confidential 1.0 product specification 1.1 general specifications table 1-1. absolute maximum ratings symbol parameter minimum maximum units av dd positive supply av ss ? 0.5 av ss + 3.6 v v ioam any i/o pin av ss ? 0.5 av dd + 0.5 v t store storage temperature ? 65 +150 c esd hbml human body model (low-speed) 2000 ? v esd hbmh human body model (high-speed) 2000 ? v esd cdm charge device model 500 ? v note: 1. no damage. table 1-2. recommended operating conditions symbol parameter notes minimum typical maximum units av dd supply voltage ? ?5 3.3 +5 % t amb ambient temperature ? ?10 ? +85 c ja junction to ambient thermal resistance 1, 2 ? 44.5 ? c/w notes: 1. mounted on multi layer board ( 4 layers). 2. airflow = 0.0 m/s. table 1-3. power dc electrical specifications symbol parameter notes minimum typical maximum units total i dd supply current 1 ? 70 90 ma p diss total power dissipation (@3.3v) 1, 2, 3 ? 230 312 mw notes: 1. specified at recommended operating conditions?see table 1-2 . 2. includes on-chip power dissipation as well as off- chip power dissipated by termination resistors. 3. typical calculated at nominal supply voltage, maximum calculated at nominal supply voltage + 5%.
product specification 21324-dsh-001-c mindspeed technologies ? 7 mindspeed proprietary and confidential 1.2 input/output level specifications table 1-4. cmos input electrical sp ecifications (logic signals only) symbol parameter notes minimum typical maximum units v ih input logic high voltage 1 0.75 x av dd ?av dd + 0.3 v v il input logic low voltage 1 0 ? 0.25 x av dd v i ih input current (logic high) 1 ? 100 ? 100 a i il input current (logic low) 1 ? 100 ? 100 a note: 1. specified at recommended operating conditions?see table 1-2 . spec is for a max load of 20 pf. table 1-5. high speed input electrical specifications symbol parameter notes minimum typical maximum units dr in input bit rate 1 143 ? 2970 mbps v id input voltage range with 0m of cable, p-p 1, 5 700 800 1200 mv v icm input common-mode voltage 1, 4 ? 2.75 ? v c in input capacitance 1, 4 ? 0.5 ? pf r in input resistance 1, 4 ? 1.6 ? k s 11 input return loss (5 mhz to 1.5 ghz) 1, 2, 3 20 30 ? db input return loss (1.5 ghz to 3 ghz) 1, 2, 3 ? 13 ? db notes: 1. specified at recommended operation conditions?see table 1-2 . 2. using the recommended input termination shown in figure 2-1 . 3. measured single ended. 4. guaranteed by design. 5. this is also the recommended cable launch level (far end).
product specification 21324-dsh-001-c mindspeed technologies ? 8 mindspeed proprietary and confidential table 1-6. high speed output electrical specifications symbol parameter notes minimum typical maximum units t r /t f rise/fall time (20%?80%) 1, 2, 7 ? 100 120 ps t r /t fmm rise/fall time mismatch 1, 2, 7 ? 0 30 ps dcd o duty cycle distortion (dcd) 1, 2, 5, 6 ? 0 15 ps v od differential output voltage p-p 1, 3 600 750 950 mv v ocm common mode voltage 1, 3, 4 ? av dd ? 0.205 ? v z o internal output termin ation resistance to av dd 140 50 60 notes: 1. specified at recommended operation conditions?see table 1-2 . 2. with 100 differential termination. 3. with 50 to av dd termination. 4. outputs dc-coupled. 5. duty cycle distortion (d cd) is defined as the diff erence in the intrinsic jitter at the 50% voltage level and the intrinsic j itter at the rising/falling edge crossing point. if the rising /falling edge crossing poi nt is at the 50% voltage level, then dcd = 0. 6. measured with a 1010 pattern. 7. measured with a prbs23 pattern.
product specification 21324-dsh-001-c mindspeed technologies ? 9 mindspeed proprietary and confidential figure 1-1. output symbols definition v od t r t f v oh v ol j opp v oh : average voltage high level v ol : average voltage low level v od : (voh) ? (vol) v ocm : common mode voltage j opp : output jitter peak-peak t r : 20-80% rise time t f : 80-20% fall time v ocm note: waveform above is differential.
product specification 21324-dsh-001-c mindspeed technologies ? 10 mindspeed proprietary and confidential 1.3 eq specifications table 1-7. cable equalizer distance specifications symbol parameter conditions notes minimum typical maximum units len sd max cable length belden 1694a 1, 4 ? 400 ? m max cable length belden 8281 1, 4 ? 300 ? m len hd max cable length belden 1694a 2, 6 ? 200 ? m max cable length belden1694a 2, 5 ? 140 ? m max cable length belden 8281 2, 5 ? 120 ? m len 2xhd max cable length belden 1694a 3, 7 ? 100 ? m notes: entire table specified at recommended operating conditions?see table 1-2 . 1. data rate = 270 mbps. 2. data rate = 1485 mbps. 3. data rate = 2970 mbps. 4. error free with timing jitter typically = 0.2 ui, pathological pattern. 5. error free with alignment jitter typically = 0.25 ui, pathological pattern. 6. error free with alignment jitter typi cally = 0.3 ui, pathological pattern. 7. error free with alignment jitter typically = 0.35 ui, pathological pattern. table 1-8. sd /mute specifications symbol parameter notes minimum typical maximum units v mut_lo output voltage when input signal detected 1 ? 0.16 x av dd ?v v mut_hi output voltage when input si gnal not detected 1 ? 0.95 x av dd ?v note: 1. specified at recommended operating condition?see table 1-2 .
product specification 21324-dsh-001-c mindspeed technologies ? 11 mindspeed proprietary and confidential 1.4 package specification the pin assignment is illustrated in figure 1-2 . the m21324 package is rohs compliant. this package is backwards compatible with the standard soldering tec hniques as defined in jedec-std-020c (snpb process). figure 1-2. m21324 pin assignments center pad av 16 15 14 13 5 6 7 8 1 2 4 3 12 11 9 10 ss agc agc sd0 sdi sdi av ss eq_byp nc av ss av dd av dd sd/mute av ss av ss sd0 thresh
product specification 21324-dsh-001-c mindspeed technologies ? 12 mindspeed proprietary and confidential 1.4.1 mechanical description the package for the m21 324 is illustrated in figure 1-3 below. please see amkor?s application note for pcb footprint (referenced in the section a.2.1 ). figure 1-3. m21324 packaging details 4.000?.050 4.000?.050 side view 0.203 ref. 0.000-0.050 1) tslp and slp share the same expose outline note: min. nom. a 0.700 0.750 0.800 0.850 but with different thickness: max. 0.800 tslp slp 0.900 top view bottom view (4x4mm) 16l t/slp by marking pin 1 dot 2.760?.050 exp.dap pin #1 identification chamfer 0.350 x 45? 1.950 ref. 0.650 bsc 0.400?.050 2.755?.050 exp.dap 0.350?.050 4.000
product specification 21324-dsh-001-c mindspeed technologies ? 13 mindspeed proprietary and confidential 1.5 manufactureability the values shown in this section may change; however, these are standard requirements. 1.5.1 electrostatic discharge tested per jesd22-a114. this device passes 2000v of esd human body model (hbm) testing. tested per jesd22-c101. this device passes 500 v of esd charged device model (cdm) testing. tested per eia/jesd78. this device passes 150ma of trigger current at 85c during latchup testing. 1.5.2 peak reflow temperature m21324g (rohs compliant package): peak reflow temperature is 260c per jedec standards. 1.5.3 moisture sensitivity level (msl) all versions of this device (std pb-type and rohs comp liant packages) are moisture sensitivity level (msl) 3 per j-std-020b and j-std-033. 1.6 design considerations see digital video interfacing application note (212xx-app-001-a) for guidance on the following: ? component placement and layout ? routing considerations 1.6.1 thermal considerations the m21324 consum es less power than legacy devices, therefor e they will contribute less thermal energy and should result in a lower operating temperature.
21324-dsh-001-c mindspeed technologies ? 14 mindspeed proprietary and confidential 2.0 functional description 2.1 pin descriptions 2.1.1 general nomenclature throughout this data sheet, physical pins will be denoted in bold print. 2.1.2 high-speed input digital video coaxial cables are ac-coupled to the high-speed low-noise inputs, sdi/sdi , which, are designed to operate in both the single-ended or differential mode. the typical application is single-ended into the non-inverting sdi input with the inverting sdi input biased to match the bias on the input used. the m21324 does not contain any internal input terminations and require both external input termination as well as the matching circuit to exceed the smpte input return loss specifications. the package and ic design of the m21324 has been optimized for high-speed performance, allowing them to exceed the sd/hd smpte return loss spec by 5 db to 10 db, using the recommended external matching/termination network and commonly employed right-angle, through-hole, or vertical mount 75 bnc connectors. for non-inverting single-ended operation, the recommended input circuit is shown in figure 2-1 . for differential operation, the matching/termination circuit on sdi should be duplicated on sdi . the internal pull ups automatically bias sdi/sdi for proper ac coupled operation. figure 2-1. single-ended typical input matching/termination network 8.2 nh sdi sdi 4.7 f bnc 4.7 f 75 37.5 75 m21324
functional description 21324-dsh-001-c mindspeed technologies ? 15 mindspeed proprietary and confidential 2.1.3 high-speed outputs the high-speed differential outputs after equalization are made available on the sdo/sdo pins. the output swing and common-mode is compatible with the gs2974/gs2974a, gs1574/gs1574a and gs9074a. 2.1.4 adaptive equalization selection in typical operation, the adaptive equalization is enabled with eq_byp = low; however, with eq_byp = high, the adaptive equalization and dc restore circuit is bypa ssed and the input is fed directly to the output. 2.1.5 output mute and signal detect when configured as an input by forcing a voltage on sd /mute = high (vdd), the outpu t of the m21324 will be inhibited at logic low (outputs muted). when sd /mute = low (vss), the output is never muted and the programmable cable length based mute function is disabled. when tied to a high-impedance input or left floating, the programmable inhibit based on cable length is enabled and the pin is defined as an los output (logic). in the event of an los, the output is muted. the inhibit threshold is set with an analog voltage applied to the thresh input pin, this threshold will d epend on cable type (e.g. belden 1694a or 8281). to achieve maximum cable length equalization, the thresh pin should be left open. decoupling capacitors should be used between the thresh pin and gnd. 2.1.6 equalizer detailed description the basic equalizer design consists of interlaced stages of gain and equalization to maximize both the overall equalization gain as well as the input sensitivity for maxi mum performance with minimum jitter. in order to achieve maximum distance at 270 mbps, 1485 mbps and 2970 mbps with belden 1694a, the overall equalizer block has over 50 db of broadband signal boost and maintains an input sensitivity of approximately 10 mv. using a high- performance silicon process, high gain -bandwidth products ar e achieved allowing for high-performance, wide dynamic range design with minimum power dissipation. since signals are launched with different smpte specifie d rise and fall times which can vary substantially (especially at the receive end after going though a wide dynamic range of valid cable lengths) the equalization routine determines both the bit rate and the resultant signal hf attenuation as opposed to just looking at the launch edge rates. by determining both sets of conditions, it is possible to optimize the equalizer for the different rates. for example, the m21324 maintains the same maximum cable length as optimized sd only equalizers. an sd signal through a short cable can have the same edge rate as a hd signal through a long cable; yet, both conditions require different levels of equalization as well as different optimized inverse-transfer functions. the advanced equalization technology can make the distinction between the two cases for optimal performance. this also leads to proper mute threshold ( thresh ) that is independent of the bit rate. in order to accommodate both the smpte worst case equalizer pathological patterns as well as some customer derived worst case dc offset patterns, a high-gain slicer is included in the signal path to correct for any eye- crossing wander due to ac coupling of the input. figure 2-2 shows the test setup used by mindspeed to evaluate the performance of the m21324.
functional description 21324-dsh-001-c mindspeed technologies ? 16 mindspeed proprietary and confidential 2.2 m21324 common signals by interface group figure 2-2. test setup diagram for cable equalizer evaluation table 2-1. power pins pin name pin number function type av ss 1, 4, 9, 12 ground power av dd 13, 16 positive supply power center pad ? chip ground power table 2-2. high-speed signal pins pin name pin number function type sdi/sdi 2, 3 non-inverting and inverting serial data input to the adaptive equalizer i?ac coupled high speed sdo/sdo 11, 10 non-inverting and inverting differen tial serial data output o?high speed cml multi-rate video pattern generator 75 coaxial cable m21324 cable equalizer m21328 cable driver multi-rate video monitor
functional description 21324-dsh-001-c mindspeed technologies ? 17 mindspeed proprietary and confidential 2.2.1 m21324 pins table 2-3. control/interface pins pin name pin number function default type agc/agc 5, 6 external agc (automatic gain co ntrol) capacitor connection points. use 1.0uf capacitor. internal pull up analog eq_byp 7 input control signal that when enabled (high) bypasses the inputs directly to the output stage. low = normal operation high = disables eq and bypasses input to output internal pull down i?cmos nc 14 internal, no connection. mute not available on this pin n/a n/a thresh 8 input control signal voltage. programmable cable length forced mute threshold. this function is disabled if sd /mute = low internal pull down analog sd /mute 15 bidirectional signal that can be used as an input control signal or as an output status indicator. when configured as an input by forcing a voltage on sd /mute = high, the sdo outputs will be inhibited at logic low (outputs muted). see table 1-4 for levels. when sd /mute = low (vss), the output is never muted and the programmable cable length based mute function is disabled. when configured as an output (tied to a high-imp edance input) or left floating, the programmable inhibit based on cable length is enabled configured as output: low = input signal detect high = loss of signal configured as input: low = never mute high = force mute ? i/o note: internal pull-up/pull-down is 100 k . nc: gs2974a, gs1574/gd1574a and gs9074 use this pin as mute.
21324-dsh-001-c mindspeed technologies ? 18 mindspeed proprietary and confidential appendix a.1 glossary of terms/acronyms ber bit error rate cd cable driver cda cable distribution amplifier cml current mode logic ddi differential data inputs dtv digital television dvb digital video broadcast emi electro magnetic interference eq equalizer or equalization esd electro static discharge green environmentally friendly hd high definition hw hardware id identifier i/o input/output mlf micro lead frame package (also called qfn) rohs restriction of hazardous substances sd standard definition sdi serial digital input sdo serial digital output se single ended smpte society of motion pict ure and television engineers sw software
appendix 21324-dsh-001-c mindspeed technologies ? 19 mindspeed proprietary and confidential a.2 reference documents a.2.1 external the following external documents were referenced in this data sheet. ? application notes for surface mount assembly of amkor?s microleadframe (mlf) packages ? amkor technology thermal test report tt-00-06 (see http://www.amkor.com for detailed information) ? smpte 292m, smpte 259m, smpte 344m, smpte424m ? esi tr101 891 dvb asynchronous serial interface (asi)
www.mindspeed.com general information: telephone: (949) 579-3000 headquarters - newport beach 4000 macarthur blvd., east tower newport beach, ca 92660 ? 2007-2009 mindspeed technologies ? , inc. all rights reserved. information in this document is provided in connection with mindspeed technologies ? ("mindspeed ? ") products. these materials are provided by mindspeed as a service to its customers and may be used for informational purposes only. except as provided in mindspeed?s terms and conditions of sale for such products or in any separate agreement related to this document, mindspeed assumes no liability whatsoever. mindspeed assumes no responsibility for errors or omission s in these materials. mindspeed may make changes to specifications and product descriptions at any time, without notice. mindspeed makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incom patibilities arising from future changes to its specifications and product descriptions. no license, ex press or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. these materials are provided "as is" withou t warranty of any kind, either express or implied, relating to sale and/or use of mindspeed products including liability or warranties relating to fitness for a particular purpose, consequential or incidental damages, merchantability, or infringement of any patent, copyright or other intellectual property right. mindspeed further does not warrant the accuracy or completeness of the information, text, gr aphics or other items contained within these materials. mindspeed shall not be liable for any special, indirect, incidental, or consequential damages, including without li mitation, lost revenues or lost profits, which may result from the use of these materials. mindspeed products are not intended for use in medical, lifesaving or life sustaining applications. mindspeed customers using or selling mindspeed pr oducts for use in such applications do so at their own risk and agree to fully indemnify mindspeed for any damages resulting from such improper use or sale. 21324-dsh-001-c mindspeed technologies ? 20 mindspeed proprietary and confidential

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