ADS7950 Datasheet, PDF (36/65 Pages) Texas Instruments – 12/10/8-Bit, 1 MSPS, 16/12/8/4-Channel, Single-Ended, MicroPower, Serial Interface ADCs

ADS7950, ADS7951, ADS7952, ADS7953
ADS7954, ADS7955, ADS7956, ADS7957
ADS7958, ADS7959, ADS7960, ADS7961
SLAS605A – JUNE 2008 – REVISED JANUARY 2010
www.ti.com
CS
Device in any operation mode
No
Program alarm thresholds?
CS
Entry into alarm
register
programming
sequence
CS
Alarm register
programming
sequence
Yes
SDI: DI15..12 = 11XX
(xx indicates group of four channels; refer table 8)
Device enters alarm register programming sequence
SDI: DI15..0 as per table 8 (program alarm thresholds)
DI12 = 1?
No
Yes
Yes
Program another group of four channels?
No
End of alarm programing
NOTE: The device continues its operation in selected mode during programming. SDO is valid, however it is not possible to
change the range or write GPIO data into the device during programming.
Figure 55. Alarm Program Register Programming Flowchart
Table 9. Alarm Program Register Settings
BITS
RESET STATE _LOGIC
STATE
DESCRIPTION
FUNCTION
FRAME 1
DI15-12 NA
1100
Device enters ‘alarm programming sequence’ for group 0
1101
Device enters ‘alarm programming sequence’ for group 1
1110
Device enters ‘alarm programming sequence’ for group 2
1111
Device enters ‘alarm programming sequence’ for group 3
Note: DI15-12 = 11bb is the alarm programming request for group bb. Here ‘bb’ represents the alarm programming group number in binary
format.
DI11-14 NA
Do not care
FRAME 2 AND ONWARDS
36
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