Texas Instruments TMS320DM355 Computer Hardware User Manual


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PRODUCT PREVIEW
DIN<9:0>
MSB
LSB
DACDigitalInput
ExampleforExternalCircuit
Iout[mA]
1.4mA
0
DACOutputCurrent
C
BG
0.1 Fm
VREF
V
ideoDAC
R
BIAS
2550W
IBIAS
RLOAD
499W
IOUT
Buffer
VFB TVOUT
TMS320DM355
DigitalMediaSystem-on-Chip(DMSoC)
SPRS463A–SEPTEMBER2007–REVISEDSEPTEMBER2007
A.ConnectIOUTtoahigh-impedancevideobufferdevice.
B.PlacecapacitorsandresistorsascloseaspossibletotheDM355.
C.ConfiguretheVDAC_CONFIGregisterinthesystemcontrolmoduleasfollows:DINV=0,PWD_GBZ=1,
PWD_VBUFZ=0,ACCUP_EN=X.SeetheTMS320DM355ARMSubsystemReferenceGuideandthe
TMS320DM355DMSoCVideoProcessingBackEnd(VPBE)User’sGuideformoreinformationonVDAC_CONFIG.
Figure5-31.DACOnlyApplicationExample
SubmitDocumentationFeedbackPeripheralInformationandElectricalSpecifications125
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