Power Supplies; J5: Gpio Header Pins; J5 Configuration: Power-Supply Input - Texas Instruments ADS1256EVM-PDK User Manual

Power Supplies

Each pin is connected to the GPIO header through a 100Ω resistor. 100kΩ pull-downs on each pin protect
the GPIOs when they are configured as inputs, which is the default setting. The GPIO header, J5, carries
the GPIO pins for the ADS1256.
The GPIO header pinout is described in
Pin Number
4 Power Supplies
J5 is the power-supply input connector. It is used as the primary supply source for the entire EVM.
lists the configuration details for J2.
Pin No.
J5.1
J5.2
J5.3
J5.4
J5.5
J5.6
J5.7
J5.8
J5.9
J5.10
8
ADS1256EVM and ADS1256EVM-PDK
Figure 2. GPIO Pins
Table
Table 3. J5: GPIO Header Pins
1
2
3
4
Table 4. J5 Configuration: Power-Supply Input
Pin Name
+VA Positive analog supply, +5V to
+18V
–VA Negative analog supply, -5V to
-18V
+5VA Positive analog supply, +5V
–5VA Negative analog supply, -5V
DGND Digital ground
AGND Analog ground
+1.8VD Positive digital supply, +1.8V
VD1 Positive digital supply
+3.3VD Positive digital supply, +3.3V
+5VD Positive digital supply, +5V
Copyright © 2003–2018, Texas Instruments Incorporated
3.
Pin Name
D0 GPIO or buffered system clock
output
D1 GPIO
D2 GPIO
D3 GPIO
Function
SBAU090E – November 2003 – Revised November 2018
Function
Required
No
No
Always
No
Optional connection to
AGND through J10
Ground
Digital supply; select
using J9
No
Digital supply; select
using J10
No
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Table 4