Arcam RDAC - Manuel d'utilisateur télécharger pdf (Page 3)

Mainmicrocircuitpage2

ThemainmicroatlocationIC107(onthediagramthisissplitintotwoareathesearemicro

powerandconfig+MicroI/O)wewilldealwithMicropowerandconfig1

.

Micropowerandconfig

TwoseparatepowersuppliesarerequiredbytheAT91SAMthesearetakenfrom3V3and1V8

fortheprocessorcore–themicroisprogrammedwithbespokeArcamcodetheoscillatorfor

themicroisatX101andrunsat4MHztheTDITDOTCKTMSERASENRSTpinsare

for

developmentDebuguseandtheconnecteratlocationCON103isnotfittedtoproductionitems

MicroI/O

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Pindescriptions

Pinname Description

SPDIFINT InterruptflagfromtheSPDIFreceiver

Source TosourceselectTACTswitch

MuteRLY ControlofmuterelayviaTR100

DACMUTE DACMUTEsignaltoPin25ofWolfsonDACatlocationIC301

ENABLEKLEER ToMUXatlocationIC205A

ENABLESPDIF ToMUXatlocationIC202A

SERIALUCtoKLEER SerialcontroltoKLEERwirelessoption

SERIALKLEERtoUC SerialdatafromKLEERtoUC

SCL ToEEpromatlocationIC108/DACatlocationIC301/USBreceiverat

IC103

SDA ToEEpromatlocationIC108/DACatlocationIC301/USBreceiverat

IC103

EnableLEDS LEDsoncontrol

LED0 BinaryselectforLEDcontrolvia3–8linedecoderatlocationIC102

LED1 BinaryselectforLEDcontrolvia3–8linedecoderatlocationIC102

LED3 BinaryselectforLEDcontrolvia3–8linedecoderatlocationIC102

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Arcam RDAC - Manuel d'utilisateur Page 3