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EV9800 evaluation kit user manual ? 1999 consumer microcircuits limited um9800/3 july 1999 advance information 1.0 features analogue pcb with low noise floor software supplied for ti - dsp controllable from windows ? ? environment footprint for ti-dsp dual power supply operation access to all control signals 1.1 brief description this kit comprises a pcb containing the cmx980a tetra baseband processor and analog interface circuitry plus regulator circuits for analog and digital v dd . there is also a footprint, regulated power supply and level shifting provided for a texas instruments dsp starter kit. the software supplied requires the use of a ti dsp. for those not wishing to use the ti dsp kit a connector provides access to the cmx980a control signals. note: the user must supply the ti - dsp.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 2 um9800/3 contents section page 1.0 features ................................ ................................ ................................ .......... 1 1.1 brief description ................................ ................................ ............................ 1 1.2 preliminary information ................................ ................................ ................. 4 1.2.1 laboratory equipment ................................ ................................ ... 4 1.2.2 handling precautions ................................ ................................ .... 4 1.2.3 approvals ................................ ................................ ........................ 4 1.3 quick start ................................ ................................ ................................ ...... 5 1.3.1 setting-up ................................ ................................ ....................... 5 1.3.2 software ................................ ................................ .......................... 5 1.3.3 operation ................................ ................................ ........................ 5 1.4 signal lists ................................ ................................ ................................ ..... 6 1.5 circuit schematics and board layouts ................................ ....................... 9 1.6 detailed description ................................ ................................ ..................... 12 1.6.1 hardware description ................................ ................................ .. 12 1.6.2 adjustments and controls ................................ .......................... 12 1.6.3 firmware description ................................ ................................ .. 12 1.6.4 software description ................................ ................................ ... 13 1.6.5 additional information ................................ ................................ . 20 1.6.6 troubleshooting ................................ ................................ ........... 21 1.7 performance specification ................................ ................................ .......... 23 1.7.1 electrical performance ................................ ................................ 23 note: as this product is still in development, it is likely that a number of changes and additions will be made to this specification. items marked tbd or left blank will be included in later issues. information in this data sheet should not be relied upon for final product design.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 3 um9800/3 figure 1 cmx980a block diagram
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 4 um9800/3 1.2 preliminary information 1.2.1 laboratory equipment the following laboratory equipment is needed to use this evaluation kit: 1.2.1.1 power supplies 15v regulated laboratory power supplies are required. if the user wishes to use the supplied software and firmware: 1.2.1.2 dsp development card, specifically the texas instruments dskplus, target processor - tms320c542, ti part no. - tmds32000l0. documentation for this kit, and the target processor, is available on ti?s website. 1.2.1.3 ibm compatible pc, 486dx2-66mhz with 8-bit bi-directional parallel port (epp or ecp printer ports must be set to standard mode) running windows 3.1x or windows 95. 1.2.2 handling precautions like most evaluation kits, this product is designed for use in office and laboratory environments. the following practices will help ensure its proper operation. 1.2.2.1 static protection this product uses low power cmos circuits which can be damaged by electrostatic discharge. partially damaged circuits can function erroneously, leading to misleading results. observe esd precautions at all times when handling this product. 1.2.2.2 contents - unpacking please ensure that you have received all of the items on the separate information sheet (ek9800) and notify cml within 7 working days if the delivery is incomplete. 1.2.3 approvals there are no approvals for this product.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 5 um9800/3 1.3 quick start this section provides instructions for users who wish to experiment immediately with the evaluation kit. a fuller description of the kit and its use appears later in this document. 1.3.1 fitting the ti dskplus there are a set of pads on the pcb which match those of the ti dskplus. the use of commonly available sockets and pin headers will raise the dskplus board above the adjacent circuitry. it is recommended that the user only fit pins to the pads which are actually used to ease fitting and removal of the dskplus board, see circuit schematic. there is a power rail provided for the dskplus, therefore it is not necessary to use the psu supplied by ti. if however the psu supplied by ti is to be used the user should remove jumper jp14. the dskplus parallel connection should be used as described in the dskplus user?s guide, ti document spru191. 1.3.2 softw are copy the files es9800xx.exe, ef98kxx.obj and ef9800xx.obj to a single directory. 1.3.3 operation connect the +/-15 volt supplies and turn on. run es9800xx.exe. this will reset the ti dskplus, before loading the application firmware. finally, the cmx980a is reset by this firmware. an optional reset button allows the manual resetting of the cmx980a.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 6 um9800/3 1.4 signal lists connector pinout connector ref. connector pin no. signal name signal type description j1 1, 2, 6, 8, 10, 12, 14, 18, 20. dgnd power digital ground. j1 3 /irq o/p interrupt request line from cmx980a j1 4 dv dd p ower digital v dd j1 5 sc md r d f s o/p cmx980a - command read frame sync j1 7 sc md f s i/p cmx980a - c ommand frame sync j1 9 sc md r d d ata o/p cmx980a - command read data j1 11 sc md d ata bi cmx980a - command data j1 13 sc lk o/p cmx980a - serial clock j1 16 vdskp p ower fixed 5 volt rail j1 15 /r eset i/p cmx980a - reset pin j1 17 sr x f s o/p cmx980a - receive frame sync j1 19 sr x d ata o/p cmx980a - receive data j2 1 dgnd p ower alternative power supply for j2 2 dv in p ower digital circuits only. j3 1 +15v p ower positive supply j3 2 gnd p ower analog ground. j3 3 -15v p ower negative supply j5-j8 1 dac1-4 o/p auxilliary dac outputs. j9 1 ir x p bi i channel rx, +ve input. j10 1 ir x n bi i channel rx, -ve input. j11 1 qr x p bi q channel rx, +ve input. j12 1 qr x n bi q channel rx, -ve input. j13 1 qt x n o/p q channel tx -ve output. j14 1 qt x p o/p q channel tx +ve output. j15 1 it x n o/p i channel tx -ve output. j16 1 it x p o/p i channel tx +ve output.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 7 um9800/3 connector pinout connector ref. connector pin no. signal name signal type description j17 1 it x o/p i channel tx, single ended output. j18 1 qt x o/p q channel tx, single ended output. j19 1 qr x i/p q channel rx, single ended input. j20-j23 1 adc1-4 i/p auxilliary adc inputs. j24 1 ir x i/p i channel rx, single ended input. test points test point ref. default measurement description tp1 - dv in tp2,tp3. 0 volts digital ground. tp4 - tp7 0 volts a nalog ground . tp8 - cmx980a - serial clock tp9 - cmx980a - command data tp10 - cmx980a - c ommand frame sync tp11 lo cmx980a - command read data tp12 lo cmx980a - command read frame sync tp13-16 0 volts dac4-1 tp17-20 - adc4-1 tp21 hi interrupt request line from cmx980a tp22 lo cmx980a - receive data tp23 lo cmx980a - receive frame sync tp25 5 v olts analog v dd tp26 5 volts digital v dd tp27 5 volts dsp power rail, v dskp
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 8 um9800/3 jumpers/links link ref. positions default position description jp1-4 sc/oc sc links tx outputs to single ended convertors. jp5,7-9 sc/oc sc links rx single ended inputs to cmx980a differential inputs. jp6 sc/oc sc links sclk to second serial port of dskplus. jp10,11 sc/oc sc disable analog ic on dskplus. jp12 sc/oc sc replace with current meter to monitor cmx980a analog current jp13 sc/oc sc replace with current meter to monitor cmx980a digital current jp14 sc/oc sc connects power rail, v dskp , to dskplus footprint. lk1 sc/oc sc links analog and digital ground planes. lk2 sc/oc sc links +15v rail for digital and analog supplies notes: i/p = input o/p = output bi = bidirectional sc = short circuit oc = open circuit
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 9 um9800/3 1.5 circuit schematics and board layouts srxfs nirq nreset scmdfs scmdrddata scmdrdfs srxdata sclk scmddata c17 39pf 39pf c18 tp8 tp9 tp10 tp11 tp12 tp22 tp23 3 4 74hc04 u4:b 5 6 74hc04 u4:c gnddigital gnddigital 2 1 sw1 gndanalog c4 10nf c5 10nf gnddigital c20 10nf 100nh l5 1 2 jp13 dvdd gnddigital 15 mclk 24 scansel 16 sclk 17 scmddata 18 scmdfs 19 scmdrddata 20 scmdrdfs 11 srxdata 12 srxfs 2 adc4 7 dac4 8 dac3 9 dac2 10 dac1 1 adc3 44 adc2 43 adc1 39 vss2 28 vss2 27 vss1 32 vcc1 33 vcc2 40 vss1 5 vssa 6 vdda 25 itxp 26 itxn 14 /reset 41 irxn 38 qrxp 37 qrxn 42 irxp 23 /irq 35 bias2 36 bias1 30 qtxp 29 qtxn 31 vssb 34 vcc3 13 vss 22 vss 4 vss 21 vdd 3 vdd u1 cmx980al6skt c6 0r link 1 2 u4:a 9 8 74hc04 u4:d gnddigital gnddigital tp21 100k r1 r14 10k j5 j6 j7 j8 dvdd tp13 tp14 tp15 tp16 9.2160mhz x1 c23 47nf 10m r12 gndanalog gndanalog gnddigital tp3 tp4 tp5 tp6 tp7 tp2 gnddigital gndanalog 1 2 lk1 {fitted} j21 j23 j22 tp20 j20 avdd 1 2 jp12 tp17 tp18 tp19 l1 100nh l2 100nh l3 100nh 6k2 r9 6k2 r8 6k2 r7 r6 6k2 c1 10nf gndanalog l4 100nh c2 10nf c3 10nf 1n5f c8 c9 1nf 1nf c10 1nf c11 1nf c12 220r r5 j14 j13 j9 gndanalog -15v +15v 1 2 jp3 100nf c13 100nf c16 skt r11 +15v 1 2 jp4 1 2 jp5 100nf c15 gndanalog gndanalog 3 + 8 rg 4 v- 5 ref 6 2 - 1 rg 7 v+ u2 ina111 -15v 1 2 jp1 1 2 jp2 100nf c14 skt r10 3 + 8 rg 4 v- 5 ref 6 2 - 1 rg 7 v+ u3 ina111 j16 j15 j17 -15v +15v c24 100nf c25 100nf c26 100nf c27 100nf gndanalog gndanalog j18 avbias 1 2 jp9 2 - 3 + 1 ne5532 u5:a 11 10 u4:e 13 12 74hc04 u4:f gnddigital j10 j12 j11 1 2 jp7 1 2 jp8 1n5f c7 2 - 3 + 1 ne5532 u6:a 6 - 5 + 7 ne5532 u6:b 6 - 5 + 7 ne5532 u5:b 10k r16 r4 220r r3 220r 220r r2 gndanalog 10k r20 c28 1uf c21 2.2uf c22 2.2uf 10k r19 10k r15 gndanalog j24 j19 c29 1uf gndanalog figure 2 evaluation board - circuit schematic - analog
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 10 um9800/3 tp1 2 1 snpskt2 j2 {not fitted} gnddigital gndanalog 33uf c31 33uf c30 +15v -15v 2 1 3 snpskt3 j3 gnddigital j1:1 j1:2 j1:4 j1:6 j1:8 j1:10 j1:12 j1:14 j1:16 j1:18 j1:20 j1:9 j1:5 j1:19 j1:17 j1:3 j1:15 nint3 dvdd vdskp jp3_22 nc jp3_21 d9 jp3_20 d8 jp3_19 gnd jp3_18 d7 jp3_17 d6 jp3_16 nc jp3_15 d5 jp3_14 d4 jp3_13 gnd jp3_12 d3 jp3_11 d2 jp3_10 gnd jp3_9 nc jp3_8 mp/mc\ jp3_7 bio\ jp3_6 nc jp3_5 hold\ jp3_4 ready jp3_3 vcc jp3_2 clkout jp3_1 vcc jp2_13 emu0 jp2_12 gnd jp2_7 tdo jp2_6 pin6 jp2_1 tms jp1_35 tout jp1_34 hbil jp1_36 tdx jp5_1 int0\ jp5_2 int1\ jp5_3 hint jp5_4 int2\ jp5_5 int3\ jp5_6 gnd jp5_7 nmi\ jp5_8 mclk jp5_9 clkin jp5_10 gnd jp5_11 gnd jp5_12 gnd jp5_13 a14 jp5_14 a15 jp5_15 nc jp5_16 a12 jp5_17 a13 jp5_18 nc jp5_19 a10 jp5_20 a11 jp5_21 nc jp5_22 a8 jp5_23 a9 jp5_24 nc jp5_25 a6 jp5_26 a7 jp5_27 nc jp5_28 a4 jp5_29 a5 jp5_30 nc jp5_31 a2 jp5_32 a3 jp5_33 nc jp5_34 a0 jp5_35 a1 jp5_36 nc jp4_1 gnd jp4_2 reset\ jp4_3 vcc jp4_4 hrnw jp2_2 trst\ jp2_8 gnd jp2_14 emu1 jp2_4 gnd jp2_5 vcc jp2_3 tdi jp2_9 tck jp2_10 gnd jp2_11 tck jp6_13 jp6_12 jp6_7 jp6_6 jp6_1 jp3_36 ack jp3_35 d0 jp3_34 d[0..15] jp3_33 slct jp3_32 pe jp3_31 /busy jp3_30 d15 jp3_29 d14 jp3_28 nc jp3_27 d13 jp3_26 d12 jp3_25 gnd jp3_24 d11 jp3_23 d10 jp6_2 jp6_3 jp6_4 jp6_5 jp6_8 jp6_9 jp6_10 jp6_11 jp6_14 jp1_2 m/s\ jp1_8 out+ jp1_1 hd0 jp1_7 hd2 jp1_13 hd4 jp1_3 fsd\ jp1_19 hd6 jp1_25 hcntl0 jp1_31 gnd jp1_4 hd1 jp1_5 out- jp1_6 gnd jp1_9 pwrdwn\ jp1_21 tclkr jp1_27 tfsr jp1_33 tdr jp1_12 aux+ jp1_18 gnd jp1_24 tclkx jp1_30 tfsx jp1_15 aux- jp1_10 hd3 jp1_16 hd5 jp1_22 hd7 jp1_28 hcntl1 jp1_11 monout jp1_14 bclkr jp1_17 bclkx jp1_20 bfsr jp1_23 bfsx jp1_26 bdr jp1_29 bdx jp1_32 vcc jp4_5 iack\ jp4_6 iaq\ jp4_7 hrdy jp4_8 xf jp4_9 holda\ jp4_10 gnd jp4_11 gnd jp4_12 gnd jp4_13 hcs\ jp4_14 gnd jp4_15 gnd jp4_16 clkmd3 jp4_17 clkmd1 jp4_18 clkmd2 jp4_19 gnd jp4_20 gnd jp4_21 gnd jp4_22 hpiena jp4_23 msc\ jp4_24 vcc jp4_25 hds2 jp4_26 mstrb\ jp4_27 gnd jp4_28 hds1 jp4_29 ps\ jp4_30 r/w jp4_31 has\ jp4_32 ds\ jp4_33 is\ jp4_34 gnd jp4_35 gnd jp4_36 iostrb\ sub1 dskplus {not fitted} avbias gndanalog r29 510k r30 20k 470k r31 avdd r17 100k r18 100k gnddigital gnddigital 9 10 u7:d 74hc4050 11 12 u7:e 74hc4050 14 15 u7:f 74hc4050 gnddigital nirq nint3 vdskp q1 2n7000 q2 2n7000 gnddigital dvin {not fitted} c32 r32 10k j1:7 j1:11 j1:13 7 6 u7:c 74hc4050 5 4 u7:b 74hc4050 srxfs sclk scmdfs srxdata scmdrdfs scmddata scmdrddata 3 2 74hc4050 u7:a nreset 1 2 jp10 vdskp ( disable ti aic ) gnddigital 1 2 jp11 1 2 jp6 skt 33r r23 skt 360r r22 dvin k a d6 1n4004 r13 240r +15v dvin 1 2 lk2 {fitted} 3 vi 1 a 2 vo u9 lm317lz vdskp dvin k a d3 1n4004 3 vi 1 a 2 vo u8 lm317lz avdd tp25 c35 10uf dvdd a k 1n5341 d5 6v2 k a 1n4004 d4 1uf c36 tp26 gndanalog 620r r27 gnddigital dvdd de-coupling for ic u7 c33 47nf gnddigital r26 100r skt r24 33r skt r33 360r r25 240r dvin k a d9 1n4004 r28 240r nint3 3 vi 2 vo 1 a u10 lm317t 1 2 jp14 k a 1n4004 d7 1uf c38 a k 1n5341 6v2 d8 k a 1n4004 d10 vdskp c37 10uf c40 1uf tp27 gnddigital c39 10uf a k 1n5341 6v2 d11 gnddigital figure 3 evaluation board - circuit schematic - digital
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 11 um9800/3 j24 j9 j19 j12 j11 j10 r5 r20 c21 tp5 agnd tp4 agnd jp5 jp7 jp8 jp9 c27 c26 r15 c29 ne5532 u5 c22 c28 ne5532 u6 r19 r3 r4 r2 c25 j18 j13 j17 j16 j15 j14 jp3 c16 ina111 u2 r16 c14 ina111 u3 r11 r10 c13 c11 r8 r9 c12 c9 jp2 jp1 c15 c24 r29 r31 r30 r6 r7 c10 jp4 d5 r13 d8 c38 jp13 jp12 d3 d4 d6 d7 tp8 sclk tp9 cmddat tp12 cmdrdfs irqn tp21 tp23 rxfs tp25 avdd reset sw1 r33 r23 r22 u9 agnd tp6 u8 c36 dvdd tp26 cmdrddat tp11 tp10 cmdfs r1 r14 r24 c17 tp13 dac4 tp14 dac3 tp15 dac2 tp17 adc4 tp18 adc3 tp19 adc2 tp20 adc1 74hc04 u4 r12 c8 c23 c18 c7 u1 cmx980al6skt j5 j7 j6 j23 j22 j21 j20 tp7 agnd c37 c35 j2 j3 lk1 lk2 c32 c31 c30 tp1 r25 r28 r26 r27 c40 d9 d11 d10 jp14 tp27 vdskp c39 j8 x1 tp16 dac1 74hc4050 u7 sub1 dskplus q2 q1 r17 tp3 dgnd tp22 rxdat tp2 dgnd r18 r32 u10 jp10 c33 j1 jp6 jp11 board mod n n n n p p p p +15v -15v gnd agnd dgnd rxq rxi txq txi 5 4 3 2 1 dsp power supply pin 1 ti ref jp5 ti ref jp1 ti ref jp4 ti ref jp3 figure 4 evaluation board - layout
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 12 um9800/3 1.6 detailed description 1.6.1 hardware description all analog inputs and outputs of the cmx980a are brought to smb sockets. separate digital and analog supplies are provided. the ground planes are linked by wire link lk1. if the user wishes to provide a separate external supply for the digital circuitry, he or she should do the following. remove wire links lk1 and lk2. use socket j2 ( unfitted ) to attach digital supply between 8 and 15 volts d.c. the supply rail can be de-coupled by fitting capacitor c32. circuitry is provided to convert to and from the differential i and q channel signals of the cmx980a from and to single ended signals. this circuitry may be isolated by removing jumpers jp1 to jp5, jp7, jp8 and jp9. a 5 volt power rail and footprint are provided for use with a ti dskplus. for those not fitting a dskplus the serial interface ports for the cmx980a are brought out to a 20 pin header, j1. the digital signals may be monitored using testpoints tp8 to tp12, tp21, tp22 and tp23. level shifting is provided between the dskplus or external, j1, inputs and the cmx980a. an on-board oscillator circuit provides the 9.216mhz for mclk of the cmx980a. 1.6.2 adjustments and controls the analog and digital operating voltages (av dd and dv dd ) are set to 3.3v. these may be altered by changing the socketed components r22 and r23 for av dd and r24 and r33 for dv dd . to select 5.0volts set r22 and r33 = 620 w ; r23 and r24 = 100 w . the formula for calculating the values is as follows:- r22 + r23 = r24 + r33 = - 240 1 25 1 25 ( . ) . v dd where 240 is the value of r13 or r28 in ohms and v dd is the required supply voltage. 1.6.3 firmware description the dsp firmware consists of two sections: a kernel and application software. this structure is based upon the source code supplied with the texas instruments dsp kit. operation is only possible via the supplied windows software, es9800xx.exe. when es9800 is started a kernel program is down-loaded to the dskplus. once this has been completed successfully the main windows panel is opened and an application program is downloaded to the dskplus. in general, main panel functions are executed in the pc using only the kernel dsp functions, allowing read and write access to the cmx980a. the application demonstrations are initiated from the dsp kernel but are then executed mainly within the dsp application code. the files es9800xx.exe, ef98kxx.obj and ef9800xx.obj must all be in the same directory on the user?s pc.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 13 um9800/3 1.6.4 software description 1.6.4.1 initialisation follow the instructions given on the pc screen. for a successful initialisation this sequence of dialog boxes will be observed.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 14 um9800/3 1.6.4.2 main panel basic transmit functions: 'path setup'. sets tx path gain to unity, phase to zero. cmx980a transmits continuous zeros: the p /4dqpsk unit circle when i and q outputs are observed on an oscilloscope in x-y mode. note: in order to run the next four items, 'path setup' must have previously been run. 'petal pattern'. transmits continuous 145 degree phase shift symbol: a petal pattern when output is observed as an x-y plot. 'phase shift'. the gain on one channel is reduced by 10db and the phase shift between each channel is slowly adjusted across the maximum range. 'ball of wool'. characteristic p /4dqpsk ball of wool pattern. generated by routing on-chip bist pseudo random sequence output through the tx data path. 'ramping demonstration'. a pop-up dialog allowing demonstration of tx ramping.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 15 um9800/3 basic receive functions: 'path setup'. enables the rx path with gain set to unity. 'digital loopback'. enables the rx digital loopback test path.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 16 um9800/3 other controls: 'fir filter coefficient access'. use this pop-up dialog to change fir filter coefficients. remember that if the coefficients are adjusted a subsequent reset will return them to the default values, as will clearing bit 0 of either the txsetup ( $0x03 ) or the rxsetup1 ($0x08 ) registers. filter coefficients may be read from or written to a text file. for file format see the additional information section. note that coefficient access will not work properly if the associated signal path is active. also clock stop bits should not be set.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 17 um9800/3 'auxilliary circuits'. invokes the auxilliary circuit dialog. featuring: 'load ramp'. loads the sram dac with a linear ramp between av dd and av ss . 'aux loopback'. every 50s a sample will be taken from auxiliary adc1, inverted about 1/2 v dd and output to auxiliary dac1. ?auto cycle?. continuous ramping up and down, between av dd and av ss . ?slow conversion?. enables half speed conversion
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 18 um9800/3 1.6.4.3 transmit invoked from the menu bar once main panel is open. transmit path: indication and adjustment of gain, phase and offset values. error mask: tick the box to un-mask tx path error status bits. the total number of errors for un- masked conditions is displayed in the ?arithmetic errors? box when a tx sequence is completed. the tx function will be aborted if the error count reaches 255. data source: the random data is generated from a 15-bit sequence with xor feedback from bits 14 and 15. small sequences ( <2048 symbols ) can be transmitted from a text file. for file format see the additional information section. data is transferred to the dskplus in 2048-symbol blocks. hints: for tx to work, values must be written to the gain registers.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 19 um9800/3 1.6.4.4 receive invoked from the menu bar once main panel is open. receive path: indication and adjustment of gain and offset values. the rx anti-alias filters can be selected. there is also an indication of the i and q vernier settings. error mask: tick the box to un-mask the rx path error status bits. the total number of errors for un- masked conditions is displayed in the ?arithmetic errors? box when a rx sequence is completed. the rx function will be aborted if the error count reaches 255. data format: an 8-bit segment value (dividing the unit circle into 256 equal segments) is output for each sample period. the recovered symbol data is output. only valid if high data rate has been selected from the main panel. iq dump. one block of 2048 * 16 bit values from the cmx980a rx data pin is output. data is transferred from the dskplus in 2048-sample or -symbol blocks.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 20 um9800/3 destination: at present, receive data may only be output to a file. for file formats see additional information section. averages: displays average i and q values when a receive sequence is completed. hints: for rx to work, values must be written to the gain registers. if one EV9800 which is transmitting, is connected to a second EV9800 which is receiving, using the single ended connections for i and q, the transmit ouput must be attenuated by at least 6db to avoid over-driving the receiver. for data recovery at low signal levels it is necessary to null out any system or device offsets. this can be achieved using the average i and q values for no signal then adjusting the offset register values accordingly. it should be noted that for the cmx980a there is a total gain of 1.55 through the 63 tap low pass and 63 tap rrc filters, therefore any offset adjustment will need to be divided by 1.55. also, any subsequent adjustment in the gain registers will require scaling of the offset values. 1.6.4.5 notes on recovered symbol data note that the algorithm used is not a ?total? solution. it is designed to show that real data can be recovered from the rx data stream but, for a good signal, should give reasonable ber over a dynamic range of about 60db on the rev b printed circuit boards, slightly less on the rev a boards. at present there is no adjustment of offsets or of i and q vernier settings. the average i and q can be used to manually adjust offsets in the i and q channels. this becomes necessary when receive levels fall below approximately 25mvrms. 1.6.5 additional information 1.6.5.1 text file formats tx symbol data 0,000027 11 10 00 ; etc with one symbol in binary format on each line until the last line, line 27 ; in this case, with one binary symbol and no carriage return. 01 rx segment information 2,024576 52 5a 89 ; etc with one segment value in hex on each line until the last line, line 24576 ; in this case, with one segment value and no carriage return. 46 tx or rx symbol data 1,001024 6d aa c8 ; etc with four symbols as an 8-bit value in hex on each line until the last line, ; line 1024 in this case, with an 8-bit hex value and no carriage return . 27 rx i and q values. 3,002048 ffe2 ; first i value. 02d3 ; first q value.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 21 um9800/3 ffa0 ; etc with one 16 bit signed i or q value in hex on each line until the last line, line ; 2048 in this case, with the last q value and no carriage return. 34e1 filter coefficients. 4,000063 0 0 ffe6 ffd9 ; etc with one 16 or 12 bit signed value in hex on each line until the last line, line ; 63 in this case, with the last coefficient and no carriage return. 17d4 in all cases the 6-character value on the first line is the number of lines of data in decimal. 1.6.6 troubleshooting this software will not run with windows nt. 1.6.6.1 pc requirements the es9800 software has been verified on a limited group of machine and operating system combinations as follows. 486dx2-66, windows 95. p133, windows 3.11. p200, windows 95. note: operation has not been verified under windows 98. there are traps for possible dskplus firmware download problems. if the user wishes to try again when a problem is flagged, a system..initialise function is available from the mainframe menu, if the ?main panel? is closed down. if there are problems communicating with the dskplus a selftest utility is available. this can be accessed when the main panel and tx or rx panels are closed. from the menu bar, system? hpi selftest. note: the selftest function loads the dskplus with different firmware. therefore, to restart the evaluation software select ?system... initialise?. the option ?system... open main panel? allows the main guis to be viewed without the hardware being present. 1.6.6.2 resetting the dskplus if the es9800 windows application is exited abnormally, the dskplus will not be left in the correct state for re-starting. in this situation it will be necessary to power-down the dskplus and power-up again before attempting to restart the es9800 windows software. if the power-down is not performed, a 'dskplus not found !!' message will be displayed. 1.6.6.3 window activity and screensavers if transmitting random data continuously from the pc it will probably be necessary to disable the windows screen saver. the processor activity required to invoke the screen saver will prevent data
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 22 um9800/3 from being down loaded to the dsp frequently enough to maintain continuous transmit. in this case the transmit sequence will be terminated. it is likely that the re-sizing or moving of windows during continuous transmit will have the same effect.
evaluation kit user manual for cmx980a EV9800 ? 1999 consumer microcircuits limited 23 um9800/3 1.7 performance specification 1.7.1 electrical performance absolute maximum ratings exceeding these maximum ratings can result in damage to the evaluation kit. min. max. units supply +15v -0.3 22.0 -15v +0.3 -22.0 v voltage on any connector pin to v ss -0.3 v dd + 0.3 v current into or out of +15v or -15v and v ss pins 0 500 ma storage temperature -10 +70 c operating temperature +10 +35 c operating limits correct operation of the evaluation kit outside these limits is not implied. notes min. max. units supply (15v - v ss) 14.5 15.5 v (-15v - v ss) -14.5 -15.5 v operating temperature +10 +35 c operating characteristics for the following conditions unless otherwise specified: v dd = 5.0v, tamb = +25c. notes min. typ. max. units dc parameters i 15v 1,2 65 100 ma i -15v 20 25 ma notes: 1. not including any current drawn from the board connector pins by external circuitry. 2. fitting a dskplus and using the power rail provided on-board will increase the current consumption by approximately 250ma. operating characteristics - timing diagrams for cmx980a timing information and operating characteristics, refer to the relevant cml data sheet.
evaluation kit user manual for cmx980a EV9800 cml does not assume any responsibility for the use of any circuitry described. no ipr or circuit patent licences are implied. cml reserves the right at any time without notice to change the said circuitry and this evaluation kit specification. evaluation kits are supplied for the sole purpose of demonstrating the operation of cml products and are supplied without warranty. they are intended for use in a laboratory environment only and are not for re-sale, end-use or incorporation into other equipments. operation of evaluation kits outside a laboratory environment is not permitted within the european community. all software is supplied "as is" and is without warranty. it forms part of the evaluation kit and is licensed for use only in this kit, for the purpose of demonstrating the operation of cml products. whilst all reasonable efforts are made to ensure that software contained in this product is virus free, cml accepts no responsibility whatsoever for any contamination which results from using this software and the onus for checking that the software is virus free is placed on the purchaser of this evaluation kit. oval park - langford maldon - essex cm9 6wg - england telephone: +44 (0)1621 875500 telefax: +44 (0)1621 875600 e-mail: sales@cmlmicro.co.uk http:// www.cmlmicro.co.uk

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