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ADS1278EVM Hardware Details
11
SBAU197A – February 2012 – Revised January 2016
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ADS1x7xEVM-PDK
5
ADS1278EVM Hardware Details
The ADS1278EVM is designed to easily interface with multiple control platforms. Dual-row, header/socket
combinations at J3, J4, and J5 allow connection to external circuitry for evaluation and debug.
5.1
Jumpers and Switches
Jumpers and Switches function shown in table below
(1)
Only one of FSYNC/DRDY signals should be connected at a time (JP1 or JP2).
(2)
Channels 4-8 only available for ADS1278 and ADS1178.
Table 5. Jumper and Switch Descriptions
Jumper/Switch
Functions
Descriptions
JP1
FSYNC/DRDY Source
Short to select FSR as the source
(1)
JP2
FSYNC/DRDY Source
Short to select FSX as the source
(1)
JP3
Analog Input Buffers Power-down
Short - input buffers powered-down
Open - input buffers powered-up
JP4
Hardware/Software Control of Clock Source
Short - Software control
Open - Hardware control
JP5
Internal/External Clock Select (Hardware
control)
Short - External clock source selected
Open - Internal clock source selected
S1
Power down Channel 1
Hardware control for PWDN1 (set to OFF position for use with
software)
Power down Channel 2
Hardware control for PWDN2 (set to OFF position for use with
software)
Power down Channel 3
Hardware control for PWDN3 (set to OFF position for use with
software)
Power down Channel 4
Hardware control for PWDN4 (set to OFF position for use with
software)
Power down Channel 5
(2)
Hardware control for PWDN5 (set to OFF position for use with
software)
Power down Channel 6
(2)
Hardware control for PWDN6 (set to OFF position for use with
software)
Power down Channel 7
(2)
Hardware control for PWDN7 (set to OFF position for use with
software)
Power down Channel 8
(2)
Hardware control for PWDN8 (set to OFF position for use with
software)
S2
GPIO2
Hardware control for GPIO2 (set to OFF position for use with
software)
GPIO3
Hardware control for GPIO3 (set to OFF position for use with
software)
GPIO4
Hardware control for GPIO4 (set to OFF position for use with
software)
CLKDIV
Hardware control for CLKDIV (set to OFF position for use with
software)
GPIO0
Hardware control for GPIO0 (set to OFF position for use with
software)
GPIO1
Hardware control for GPIO1 (set to OFF position for use with
software)
S3
Converter voltage reference source selector
Selects source for reference voltage - buffered on-board
reference or header (external)
S4
Channel 4 input source selector
Selects Channel 4 input source - header or input buffer
Left - header
Right - input buffer
S5
Channel 3 input source selector
Selects Channel 3 input source - header or input buffer
Left - header
Right - input buffer
