Datasheet

Deviceoperationin Auto 1 or
Auto 2 mode
ChangetoManualmode?
* Sample: Samplesandconvertschannelselectedin ‘framen-1’
* Mux : Selectschannelincrementedfrompreviousframeasperautosequencethischannelwillbe
acquiredinthisframeandsampledatstartof ‘framen+1’
* Range: Asprogrammedin ‘framen-1’ . Appliestochannelselectedforacquisitionincurrentframe.
* SDI : Programmingfor ‘framen +1’
DI15..12 = 0001 binary …. Selectsmanualmode
DI11=1 enablesprogrammingof ‘rangeandGPIO’
DI10..7 = binaryaddressofchannel
DI6.. Asperrequiredrangeforchanneltobeselected
DI5=0 .. Nopowerdown
DI4..0… asperGPIOsettings
*SDO : DO15..0 address (orGPIOdata) & conversiondataofchannelselectedin ‘framen -1’
* GPIO:
O/P: latchedon CS
fallingedgeasperDI3..0 writteninframen-1’
I/P: Inputstatuslatchedonfallingedgeof CS
andtransferredseriallyonSDOinthesame
frame
No
Yes
CS
CS
Continueoperation in manualmode
CS
Frame: n-1
Frame: n
Request
forManual
mode
* Sample: Samplesandconvertschannelselectedin ‘framen’
* Mux : Selectschannelprogrammedin ‘framen’(Manualmode) thischannelwillbeacquiredinthis
frameandsampledatstartof ‘framen+2’
* Range: Asprogrammedin ‘framen’. Appliestochannelselectedforacquisitionincurrentframe.*
SDI : Programmingfor ‘framen+2’
DI15..12 = 0001 binary …. Tocontinueinmanualmode
DI11=1 enablesprogrammingof ‘rangeandGPIO’
DI10..7 = binaryaddressofchannel
DI6.. Asperrequiredrangeforchanneltobeselected
DI5=0 .. Nopowerdown
DI4..0… asperGPIOsettings
*SDO : DO15..0 address (orGPIOdata) & conversiondataofchannelselectedin ‘framen’
* GPIO:
O/P: latchedon CS
fallingedgeasperDI3..0 writteninframe ‘n’
I/P: Inputstatuslatchedonfallingedgeof CS
andtransferredseriallyonSDOinthesame
frame
CS
Frame:
n+1
Entryinto
Manual
Mode
* Sample: Samplesandconvertschannelselectedin ‘framen+1’
* Mux : Selectschannelprogrammedin ‘framen+1’ (Manualmode), thischannelwillbeacquiredin
thisframeandsampledatstartof ‘framen+3’
* Range: Asprogrammedin ‘framen+1’ . Appliestochannelselectedforacquisitionincurrentframe.*
SDI : Programmingfor ‘framen+3’
DI15..12 = 0001 binary …. Selectsmanualmode
DI11=1 enablesprogrammingof ‘rangeandGPIO’
DI10..7 = binaryaddressofchannel
DI6.. Asperrequiredrangeforchanneltobeselected
DI5=0 .. Nopowerdown
DI4..0… asperGPIOsettings
*SDO : DO15..0 address (orGPIOdata) & conversiondataofchannelselectedin ‘framen+1’
* GPIO:
O/P: latchedon CS
fallingedgeasperDI3..0 writteninframen+1’
I/P: Inputstatuslatchedonfallingedgeof CS
andtransferredseriallyonSDOinthesame
frame
CS
Frame:
n+2
Operation
inManual
mode
ADS7950, ADS7951, ADS7952, ADS7953
ADS7954, ADS7955, ADS7956, ADS7957
ADS7958, ADS7959, ADS7960, ADS7961
SLAS605A –JUNE 2008–REVISED JANUARY 2010 www.ti.com
Figure 50. Entering and Running in Manual Channel Sequencing Mode
28 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): ADS7950, ADS7951, ADS7952, ADS7953 ADS7954, ADS7955, ADS7956, ADS7957 ADS7958,
ADS7959, ADS7960, ADS7961