Digital Interface; J6: Analog Interface Pinout; J5: Serial Interface Pins - Texas Instruments ADS1282EVM User Manual

Digital Interface

The input pins on the ADS1282EVM are directly connected to the part, with no filtering or protection. It is
important that appropriate caution is taken when handling the pins.
analog interface J6.
Pin Number
J6.9-13 (odd)
J6.17-19 (odd
J6.10-16 (even)
3 Digital Interface
3.1 Serial Data Interface
The ADS1282EVM is designed to easily interface with multiple control platforms. Samtec part numbers
SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin, dual-row, header/socket
combination at J5. This header/socket provides access to the digital control and serial data pins of the
ADC. Consult Samtec at
connector options.
All logic levels on J5 are 3.3V CMOS, except for the I
Table 2 describes the J5 serial interface pins.
Pin No.
J5.1
J5.2
J5.3
J5.4
J5.5
J5.6
J5.7
J5.8
J5.9
J5.10
J5.11
J5.12
J5.13
J5.14
J5.15
J5.16
4
ADS1282EVM and ADS1282EVM-PDK User's Guide
Table 1. J6: Analog Interface Pinout
J6.1
J6.2
J6.3
J6.4
J6.15
J6.18
J6.20
J6.5-8
http://www.samtec.com
Table 2. J5: Serial Interface Pins
Pin Name Signal Name
CNTL Unused
GPIO0 M0
CLKX SCLK
DGND DGND
CLKR Unused
GPIO1 M1
FSX Unused
GPIO2 MCLK
FSR DRDY
DGND DGND
DX MOD/DIN
GPIO3 SUPSOR
DR DOUT
GPIO4 PDWN
INT DRDY
SCL SCL
Copyright © 2009–2011, Texas Instruments Incorporated
Table 1
Signal
A1N AINN1, ADS1282
A1P AINP1, ADS1282
A2N AINN2, ADS1282
A2P AINP2, ADS1282
AGND Analog ground connections
VCOM
AGND Analog ground connections
REFN External reference source input (–
side of differential input)
REFP External reference source input (+
side of differential input)
Unused
Unused
or call 1-800-SAMTEC-9 for a variety of mating
2
C™ pins. These pins conform to 3.3V I
I/O Type Pullup
In/Out Low
In None
In/Out None
In/Out High
Out Low
Out None
In/Out None
In None
In High
Out None
In High
Out None
2
I C n/a
SBAU144C – March 2009 – Revised May 2011
www.ti.com
summarizes the pinouts for
Description
2
C rules.
Function
Data rate select input /
Modulator data output
ADS1282 SPI™ clock
Digital ground
Data rate select input /
Modulator data output
Modulator clock output
Data ready signal
Digital ground
ADS1282 SPI data in
Power-supply regulator
Hi = ±2.5V Lo = +5V
ADS1282 data out
Power-down input
Data ready signal
2
I C clock
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