Board-Level Control
2-2
2.1
Board-Level Control
2.1.1
DIP Switch Options
The optional settings for the ADS1625/26 are set and controlled manually via
a DIP switch – SW1. The functions controlled by this switch are summarized
below.
Table 2−1. Switch Function Control
Switch
Factory-Set Condition
Position
Function
1
0
8
External reference
External reference is selected
Internal reference is selected
7
Power down
Device is not powered down
Device is powered down
6
Reserved
5
Reserved
4
Reserved
3
FIFO 0
Only applicable to ADS1626, See Table 2−2
2
FIFO 1
1
FIFO 2
Table 2−2. FIFO Settings
FIFO 2
FIFO 1
FIFO 0
FIFO Buffer Level
0
0
0
0
0
0
1
2
0
1
0
4
0
1
1
6
1
0
0
8
1
0
1
10
1
1
0
12
1
1
1
14
More information on the operation and use of the FIFO can be found in the
ADS1625/26 data sheet.
2.1.2
Jumper Options
There are 5 jumpers associated with the digital control section. Their functions
are detailed in Table 2−3.
Table 2−3. Jumper Options
Reference
Factory-Set Condition
Reference
Designator
Description
1−2
2−3
W9
Select RESET source
Derived from W10
Directly from J3 pin 3
W10
Select WR source
Derived from digital interface
Manual, via SW2
W11
Select DRDY source
Falling edge interrupt
Rising edge interrupt
J8 1−2
Address line A2
High
J8 3−4
Address line A3
High
All manuals and user guides at all-guides.com
