Arcam RCUBE User manual

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ArcamrCubeServicemanual
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AndyMooreissue1
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Overview
TherCubeinitssimplestformcanbethoughtofasahighperformanceiPoddockingstation
withmorethanafewuniquefeaturestheseinclude.
WirelesstransmissionfromeitheriPodtransmitter(ArcamWand)orUSB(ArcamWave)these
arebothoptionalextras.
rCubescantransmittoeachotherfromadockediPodorexternalsourcewiredsource.
Internalbatterypowersupply.
EasilyreplaceableiPodheader(coveredlatterinmanual).
Access
AlthoughverycompacttherCubeisdesignedtobeserviceablewithaccessgainedfrom
underneathtoallelectroniccircuits(removethefourrubberfeet)youwillseefourPhilips
screws,oncetheseareremovedthebaseplatecanbeliftedawayexposingthemaincircuit
board.Themainspeakerarrayisnotconsideredaserviceablepartbutwillbeavailableasa
completeassembly.Pleaseseedetailedexplodedview.
Circuitdescription
PSUandcharge
The19VD.CPSUfortherCubeisderivedfromeitheranexternalregulatedPSUorifnot
presentfromtheinternallithiumionbatterypacksthefollowingisadescriptionofthePSU
selection.
Theexternal19VpowersupplyisconnectedtoCon600andisinternallyfusedbythe4Afuseat
locationFS600therearpanelswitchcanbeseenatlocationSW600(a),D600isusedtoprevent
reversebias,D602andTR600fromaD.Csensecircuitthislinegoestothemainmicroat
locationU301pin7.
PSUselectioniscontrolbytheMAX1873SwitchmodeLichargecontrolleratlocationIC603the
external19vsourcecanbeseentoarriveatpin15(DCin)andwhenpresentsimplyby‐passes
thechipwhilstbeingmonitoredbypins1/2(currentsense)andcanbeseentoformthe19v
sourcenetonthediagram.TheinternalbatterysourcecanbeseenconnectedtoCON602and
againtravelsthruthe2ndpoleofswitchesavailableonSW600(b)D605andTR603areusedto
formsimplelogictoindicatetomicroU301thatbatterypowerispresent,D606allowsapathto
themain19vnetwhilstpreventingreversebias,theMosfet(M601)isusedtoenablechargeif
necessarywhenpowerispresent–theentirecircuitisoverseenbythemainmicroU301via

PSUandchargecontinued
thefeedbackgivenbyIC602allowingforintelligentchargingwithchargeenableprovidedfrom
themicroviaM602onthecontrollinelabeledascharge_enablemakingaprovisionfor
extendedcelllife.
Multipleregulatorsareusedtosupplythe(low)voltageareasofthedesigntheseare1.4Astep
downadjustableregulators,REG600receivesa19vsourceatpinonetheoutputvoltageisset
byR601andR640,MosfetM600allowsforthePSUdisablewiththe3Vstandbysupplybeing
tappedofpriortotheswitch.
REG602andREG603operateinasimilarfashionalthoughutilizethechipsownPSUshutdown
controloptionatpin2(SD)undercontrolofmicroU301,amoreconventionalregulatorisused
atlocationREG601toprovidethe1.8vcoresupplytoU301.
IC601providesalogicswitched(EN_iPod_PWR)currentlimited+5vsupplytotheiPodtowhilst
alsopreventinganovercurrentsituationattherearpanelUSBinput+3v1thisisreportedto
themainmicroviatheUSB_PWR_FAULTline.
REG604(LDO)providesa3v1supplytotheKleerandR.Fcircuitsandissourcedfromthe+5v
supply.
IC600isachargepumpconvertoronthe+5VApowersupplyrail.
Micro
TheMicroisshownintwohalvesonthediagramshownasIC301(a)detailingportallocation
andIC301(b)detailingpowersupplyrequirementsandprogrammingheaderwithreset
providedbyIC303.
PSUrequirementsinclude3V3STBYandV1.8(internallygeneratedbytheATMEL)
ThebelowtabledetailstheIC301pinallocationsandfunctions
Pin
number
DescriptionAssociatedcircuit(s)
6AMP_TEMP_COMPin32ofpowerampsandlocationsIC504IC505IC506
7DC_PWR_PRESENTFromTR600(sheet6)
9V_IOUT_POTFromIC603viaIC602MAX1873(sheet6)
10BATT_PWR_PRESENTFromTR603(sheet6)
11POS_SWSW301RearPanelBassselectswitch
12DSP_12C_SDADSPatlocationIC400
13DSP_12C_SDLDSPatLocationIC400

IC301pinallocationsandfunctionscontinued
Pin
number
DescriptionAssociatedcircuit(s)
14INT_DISPLAYTotopplatedisplayviaiPodheaderboard
16STBY_LEDTotopplatedisplayviaiPodhearerboard
24ACC_POWERFromiPodheader
25IPOD_DETECTFromiPodHeader
26VID_CABLE_0FrommultipinvideoconnectoratlocationSKT200
27PSU_DISABLERegulatorsRG602andRG603
28I2C_SDlAppleauthenticationchipatlocationIC300
29I2c_SDAAppleauthenticationchipatlocationIC300
30UC595_CLK8bitshiftregisteratlocationIC302(A)
31UC595_DATA8bitshiftregisteratlocationIC302(A)
33PROGRAM_SWNoFit
34HOST_SPI_DATA_OUTIC405anddebug
35HOST_SPI_CLKIC405anddebug
36HOST_SPI_CS*IC405anddebug
37UC595_LATCH8bitshiftregisteratlocationIC301(A)
38USB_PWR_FAULTFromIC601
41SPI_MODE0Receive/TransmittoggleviaIC403
42SPI_MODE1Receive/TransmittoggleviaIC403
43VID_CABLE_1FrommultipinvideoconnectoratlocationSKT200
44IR_EYEFromiPodheaderinterface
45CHARGE_DISABLEToIC603viaMosfetM602
46ATMEL_/OE
47UART_UC_TO_KLEERKleerinterfacedata
54VOL_CLKToIC501/IC502volumecontrols
55VOL_DATToIC501/IC502volumecontrols
57IPOD_TO_UC_RS232iPodinterfaceData
58UC_TO_IPOD_RS232iPodinterfaceData
59UART_KLEER_TO_UCKleerinterfacedata
60HOST_SPI_DATA_INIC405anddebug
61AMP_SHDN*TopoweramppackagesIC504,IC504,IC506
62AMP_MUTE*TopoweramppackagesIC504,IC504,IC506
50USB_D+_UCUSBstickviaESDprotectionpackageIC304
51USB_D‐_UCUSBstickviaESDprotectionpackageIC304
52+5V(USB)_STICK+5VUSBstickPSU
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Audioin/Videoout
iPodaudiocanbeseenasIPOD_AUDO_LandIPOD_AUDIO_RthisisdriventhrutheNJM2114
op‐ampatIC201(A/B)beforearrivingattheDG413analoguecmoschipatlocationIC200(A/B)
thisswitchallowsfortheroutingofeitheraudiofromadockediPodorfromtheexternalpath
via3.5mmrearpanelstereojackatlocationSK202againcominginviaaNJN2114atlocation
IC202(A/B)alsopresentonthispageistheYUVandCompositevideooutputsthesesignalsare
deriveddirectlyfromthesourcedeviceandcanbeseenoncircuitas
SVID‐CCOMP‐Y
SVID‐YCOMP‐PR
CVBSCOMP‐PB
DefaultoutputisCompositewithYUVswitchedwhenan“Arcam”YUVcableisinsertedandthe
senseonVID_CABLE_0andVID_CABLE_1aretriggered.
KLEERandDSP
AllaudiosignalsareroutedthrutheAnalogDevicesDSPchipatlocationIC400allowingfornot
onlytheHigh/Lowpassfilteringofchannelsforthepowerampstagebutalsobespokeaudio
manipulation,theanalogueaudiofromeitherdockediPodorAuxL+Rinappearingatpins
78/79–aWolfsonWM8805runningformaref11.2896MhzclockisusedprimarilyforJitter
reductionfortheKleerinputchipatLocationIC407–itisimportanttonotethattheKleerChip
isareceiverortransmittertheKleerchipisundercontrolofthemicroatpositionU301the
receive/transmitcircuitcanbeseenontheR.Fampcircuit.Datafortransmissionfroma
dockedorexternalsourcecanbeseencomingfromtheDSPasSDATA_DSP_OUT.The
E2PROMSatlocationsIC405andIC406areusedtostoretransmit/receivelockhistory.
RFAMP
Thinkofthisstageasatransceiveri.eitwillbothsendandreceiveinformationfromthe
externaltargetthestageusestoggleswitchestoeffectiveswitchthebetweenthetransmitand
receivestages.
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RFAMPcontinue
TheRFstageisbothReceiveorTransmit(transceiver)allowingCubestobelinkedfordocked
iPodsourceandexternalanalogueinputshenceyouwillseetwospatepathsthatareswitched
R.FswitchesseenasIC701IC702IC703twoseparateAntennaareusedandtherCubehasthe
abilitytoselectthemoststableaerialatanygiventimetheaudiopathinto/outoftheKleer
chipisseenasKL3012regardlessofstatus–wheninreceivemodetheRFpowerampis
bypassedbyIC701,IC702intransmissionmodebothswitchesaretoggledtobringtheSaw
filterFL700andLowRFPassfilterFL701withPowerAmpIC704backinline,Thetwoantenna
areconnectedtothesurfacemountsocketsatSKT700anSKT701.
DACFiltersandAmplifiers
AudioarrivetheDACfiltersandAmplifierscircuitfromtheDSPas4separatechannelsthese
beingTWEET_L/TWEET_R/WOOF_L/WOOF_Reachchanneltravelthruanidenticalfilter
circuitTWEET_Lchannelwillbedescribed.
TWEET_RaudioarriveatcapacitorC508beforetravelingintothefilterbasedaroundthe
NJM2114atlocationIC500theaudioisfurtherfilteredbythenetworkofcapacitorsbased
aroundC326andC327incombinationwithC510–audiothenpassesintotheVolumecontrol
ICatlocationIC501onpin1andcanbeseentoexit(volumeadjusted)onpin14–thevolume
controlisundercontrolofthemainmicroatpositionU302vialineVOL_CLK/VOL_DATtheline
willknowbeknownasTWEET_VOL_RandtravelsintothePowerampchipatlocationIC507
(sharedwithTWEET_VOL_L)thispackageisdrivenfromthe+19v_ampsupplyandisthermally
protecttotriggerat100c/standbyandmutecontrolcomesfromthemainmicroandtemp
statusofthepowerampcanbereportedtobacktothemicro.
TheWOOF_VOL_LandWOOF_VOL_Raudiopathsuseabridgedpowerampeachseenat
locationsIC504andIC05.
Displayandkeyboard
ThedisplayboardisconnectedtothemainboardviatheiPodheaderboardandit’sprimary
linkonthemainboardismainmicroU301.
TheboardisbuiltaroundtheIC1aAT42QT10606‐channelsensorICthisallowsforcapacitive
sensorsaskeysandalsoperformtheroleofdrivingthetopplateLED’swithexceptionof
StandbyLEDstatusred(thiscomesdirectlyfromU301)thechipissuppliedbythe3V14STBY
powersupply,theresetcircuitshownonthecircuitwasnotrequiredbythefinaldesign.
AllLEDsaredrivenfromthe+5_DISrailapartfromstandby(red)asthisisonthe3V14(STBY)
rail.

ModesindicatedbythestandbyLED
Mode Illumination
StandbyRed
Poweron Blue
Poweroncharge Violet
Programmode(standbyheld+5secs)Flashingred
ReceivingsoftwareFast(strobe)red

ModesindicatedbyinputLED
ModeIllumination
SyncingtodockediPodFlashinggreen
Synccomplete Solidgreen

ModeindicatedbywirelessLED
ModeIllumination
NoavailablelockRed
LockpresentGreen
Searchingforlink(holdwirelesskey+5secs)Flashingred

ModeindicatedbyVol+/‐LEDS
Mode Illumination
Mute BothLEDSongreen

TheIRsensoratlocationRX1isconnecteddirectlytoU301andrunsfromthe3V14supply








Checksoftwareversion
Pleasenote–instructionsarebasedonan80GBiPodclassic–theroutepathiscommontoall
variants.
PlaceaniPod/iPhoneintherCubesdockingreceptacle
•Navigatetosettings(click)
•Navigatetoabout(click)
YouwillnowseeinformationregardingtheiPodscapacity/memoryusagenavigatetoscreen
fourasindicatedbythedotsatthebottomofthescreenandyoushouldseethebelowor
similar.







InthisinstancewecanseethattheSoftwareversionisV1.07.
Toupdatesoftware
DownloadthelatestSWversionavailablefrom[email protected]orlocaldistributor.
LoadthisontoaUSBmemorystick(thisneedstobeastandardmemorysticknotonthat
carriesabootloadersuchaCruzors).
•Withthecubeinstandby
•Pressandholdthetopplatestandbybuttonfor+5seconds
•StandbyLEDshouldstarttoflashwithafrequencyof2timeasecond
•Placememorystickinrearpanelport
•LEDwillnowstrobeveryquicklyandtherCubewillresetafter15seconds
•RemoveUSBstick
•PowercyclerCube(rearpanelswitch)Checkthatsoftwareversionisasexpectedusing
iPodasinpreviouslyexplainedprocedure.

rCube
ModelrCube
ManufacturerArcam
Serialnumber
VersionV1.07
****

Accidentalsoftwaremodeinitialization
IftherCubeisaccidentlyputintoprogram/updatemode–simplypowercycletorCubeto
returntonormaloperation.
Notesformacusers
TheUSBupdateshouldbestickshouldbeformattedtoFAT32standardandtheonlyfile
presentonthestickshouldbethesoftwareupdate–i.enoindexingfilessuchasDS_Storefiles,
thumbs.dbfilesuseasoftwaresuchCleanmymacavailableat
http://www.macpaw.com/uk/cleanmymac/features
YouareinterestedintheDeviceCleanupfeature.



ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L182_1.0 SoundCube Top level.SchDoc
SoundCube - Top Level
Contact Engineer: L182CT
28/09/2010
INITIALS
Printed: 1 7Sheet of
Notes:
Contact Tel Direct: 01223 203210Mark Tweedale
A& R Cambridge Ltd.
Pembroke Avenue
Cambridge CB25 9QR
Waterbeach
A2
ARCAM
Contact Tel Reception: 01223 203200[email protected]
1
FIX100
Dia 3.2mm
1
FIX103
Dia 3.2mm
1
FIX101
Dia 3.5mm
GND
1
FIX104
Dia 3.5mm
GND
1
FIX102
Dia 3.5mm
1
FIX105
Dia 3.5mm
GND 1
FIX106
Dia 3.5mm
1
FIX107
Dia 3.5mm
1
FIX108
Dia 3.5mm
IPOD_AUX_R
IPOD_AUX_L
IR_EYE
I2C_SDA
I2C_SCL
INT_DISPLAY*
SPARE2
IPOD_TO_UC_RS232
UC_TO_IPOD_RS232
STBY_LED
ACC_POWER
IPOD_DETECT
MICRO_READY
AN_IP_SEL
VID_CABLE_0
VID_CABLE_1
U_L182_1
L182_1.0 SoundCube audio in video out.SchDoc
TWEET_R
TWEET_L
WOOF_R
WOOF_L
VOL_CLK
VOL_DAT
AMP_TEMP_COM*
AMP_SHDN*
AMP_MUTE*
U_L182_1
L182_1.0 SoundCube filters + amps.SchDoc
VOL_DAT
VOL_CLK
UART_UC_TO_KLEER
IR_EYE
VID_CABLE_0
VID_CABLE_1
SPI_MODE0
SPI_MODE1
USB_PWR_FAULT*
HOST_SPI_CS*
HOST_SPI_CLK
HOST_SPI_DATA_OUT
HOST_SPI_DATA_IN
UART_KLEER_TO_UC
I2C_SCL
I2C_SDA
PSU_DISABLE
IPOD_DETECT
ACC_POWER
STBY_LED
SPARE2
INT_DISPLAY*
DSP_I2C_SCL
DSP_I2C_SDA
BATT_PWR_PRESENT*
DC_PWR_PRESENT*
V_IOUT_POT
AMP_TEMP_COM*
AMP_SHDN*
AMP_MUTE*
EN_IPOD_PWR
MICRO_READY
AN_IP_SEL
SPDIF_RST*
KLEER_SDATA_DIR
DSP_RES*
KLEER_RESET
CHARGE_DISABLEUC_TO_IPOD_RS232
IPOD_TO_UC_RS232
U_L182_1
L182_1.0 SoundCube Micro.SchDoc
CHARGE_DISABLE
V_IOUT_POT
DC_PWR_PRESENT*
PSU_DISABLE
USB_PWR_FAULT*
EN_IPOD_PWR
BATT_PWR_PRESENT*
U_L182_1
L182_1.0 SoundCube PSU + charge.SchDoc
KLR3012_RF
RX_EN
TX_EN
DIV_CTRL
U_L182_1
L182_1.0 SoundCube RF amp.SchDoc
SPI_MODE0
SPI_MODE1
HOST_SPI_DATA_OUT
HOST_SPI_CS*
HOST_SPI_CLK
HOST_SPI_DATA_IN
KLR3012_RF
KLEER_SDATA_DIR
KLEER_RESET
SPDIF_RST*
I2C_SCL
I2C_SDA
UART_UC_TO_KLEER
UART_KLEER_TO_UC
DIV_CTRL
RX_EN
TX_EN
DSP_RES*
DSP_I2C_SDA
DSP_I2C_SCL
WOOF_L
WOOF_R
TWEET_L
TWEET_R
IPOD_AUX_R
IPOD_AUX_L
U_L182_1
L182_1.0 SoundCube kleer + DSP.SchDoc
I2C_SDA
I2C_SCL
I2C_SDA
I2C_SCL
Audio in - Video out
Host Micro
PSU + Battery charger
Kleer module + DSP (ADC/DAC) RF Amp + Diversity
Audio Amp and DAC filters
TL100
TL101
FD100
FD101
(Incl. conns to iPod board and display)
TL102
TL103
FD102
FD103
FD104
FD105
QTY DESCRIPTIONPART No. NOTESITEM
Blank PCB SoundCube MainL182PBPCB100 1
09_E142 PK 08-07-09 Prototype release A.0
10_E001 PK 05-01-10 None to this sheet B.0
10_E074 PK 30/03/10 Remove sense star connection C.0
50V
C100
10N
50V
C101
10N
50V
C102
10N
GND
GND
GND
1.0Add test points10_E136 PK 09/09/11
P100
P101
P102
P0C10001 P0C10002
P0C10101 P0C10102
P0C10201 P0C10202
P0FD10001P0FD10101 P0FD10201P0FD10301 P0FD10401P0FD10501
P0FIX10001 P0FIX10101
P0FIX10201 P0FIX10301 P0FIX10401
P0FIX10501 P0FIX10601 P0FIX10701 P0FIX10801
P0P1000TP
P0P1010TP
P0P1020TP
P0C10002
P0C10102
P0C10202
P0FIX10001 P0FIX10101 P0FIX10501
N0I2C0SCL
N0I2C0SDA
P0C10001
P0FIX10401
P0P1000TP
P0C10101
P0FIX10301
P0P1010TP
P0C10201
P0FIX10201
P0P1020TP
P0FD10001P0FD10101 P0FD10201P0FD10301 P0FD10401P0FD10501
P0FIX10601 P0FIX10701 P0FIX10801
P0C10001 P0C10002
P0C10101 P0C10102
P0C10201 P0C10202
P0FD10001P0FD10101 P0FD10201P0FD10301 P0FD10401P0FD10501
P0FIX10001 P0FIX10101
P0FIX10201 P0FIX10301 P0FIX10401
P0FIX10501 P0FIX10601 P0FIX10701 P0FIX10801
P0P1000TP
P0P1010TP
P0P1020TP
P0C10002
P0C10102
P0C10202
P0FIX10001 P0FIX10101 P0FIX10501
P0C10001
P0FIX10401
P0P1000TP
P0C10101
P0FIX10301
P0P1010TP
P0C10201
P0FIX10201
P0P1020TP
P0FD10001P0FD10101 P0FD10201P0FD10301 P0FD10401P0FD10501
P0FIX10601 P0FIX10701 P0FIX10801