ADS7871 Datasheet, PDF (27/42 Pages) Texas Instruments – 14-BIT, 48-KSPS, DATA ACQUISITION SYSTEM WITH ANALOG-TO-DIGITAL CONVERTER, MUX, PGA, AND REFERENCE

ADS7871
www.ti.com
SLAS370C − APRIL 2002 − REVISED OCTOBER 2004
Digital I/O Control Register
The Digital I/O Control register (ADDR = 6) contains the information that determines whether each of the four
digital I/O lines is configured as an input or output. Setting the appropriate OE bit to 1 enables the corresponding
I/O pin as an output. Setting the appropriate OE bit to 0 enables the corresponding I/O pin as an input (see
Figure 30).
ADDR
D7 (MSB)
D6
6
0
0
DIGITAL I/O CONTROL REGISTER
D5
D4
D3
0
0
OE3
D2
OE2
D1
OE1
D0
OE0
ADDR = 6
BIT SYMBOL
D7−D4
—
D3
OE3
NAME
—
State for I/O3
D2
OE2
State for I/O2
D1
OE1
State for I/O1
D0
OE0
State for I/O0
Bold items are power-up default conditions.
VALUE
0
0
1
0
1
0
1
0
1
FUNCTION
These bits are reserved and must always be set to 0.
Digital I/O 1 − digital input
Digital I/O 1 = digital output
Digital I/O 2− digital input
Digital I/O 2 − digital output
Digital I/O 3− digital input
Digital I/O 3 − digital output
Digital I/O 4− digital input
Digital I/O 4 − digital output
Figure 30. Digital I/O Control Register (ADDR = 6)
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