Digital Interface; Power Supplies; J2: Serial Interface Header; J3: Power-Supply Interface Header - Texas Instruments ADS8638EVM-PDK User Manual

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Digital Interface

3.1 Serial Data Interface
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 J2. This header/socket provides access to the digital control pins of the
EVM. Consult Samtec at
Table 2 describes the J2 serial interface pins.
Pin Number
J2.1
J2.2
J2.3
J2.4
J2.5
J2.7
J2.9
J2.10
J2.11
J2.13
J2.16
J2.18
J2.20
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Power Supplies

J3 is the power-supply input connector.
Pin Number
J3.1
J3.2
J3.3
J3.4
J3.5
J3.6
J3.7
J3.8
J3.9
J3.10
SBAU192 – July 2011
Submit Documentation Feedback
www.samtec.com or 1-800-SAMTEC- 9 for a variety of mating connector options.
Table 2. J2: Serial Interface Header
Signal
CS
GPIO
SCLK
GND
SCLK
CS
CS
GND
SDI
SDO
SCL
GND
SDA
Table 3 lists the configuration details for J3.
Table 3. J3: Power-Supply Interface Header
Pin Name
+VA
–VA
+5VA
–5VA
GND
GND
+1.8VD
VD1
+3.3VD
+5VD
Copyright © 2011, Texas Instruments Incorporated
Description
ADC CS signal: controlled by jumper JP1
ADC PD / Alert signal
ADC SCLK signal
Digital ground
ADC SCLK signal
ADC CS signal: controlled by jumper JP1
ADC CS signal: controlled by jumper JP1
Digital ground
ADC SDI signal
ADC SDO signal
2
I C™ clock line for EEPROM
Digital ground
2
I C data line for EEPROM
Function
High voltage positive
analog supply
High voltage negative
analog supply
5-V analog supply
Unused
Digital ground input
Analog ground input
1.8-V digital supply
Unused
3.3-V digital supply
Unused
Digital Interface
Required
Yes
Yes
Yes
No
Yes
Yes
Yes/Optional
No
Yes/Optional
Yes/Optional
ADS8638EVM-PDK
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