Digital Interface; Connector J6 Pinout - Texas Instruments ADS8354EVM-PDK User Manual

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Digital Interface

Socket strip connector J6 provides the digital I/O connections between the ADSxx54EVM board and the
SDCC board.
Table 4 Summarizes the pinout for connector J6.
Pin Number
J6.2, J6.10, J6.15, J6.16,
J6.18
J6.4
J6.11, J6.12
J6.13
J6.34
J6.36
J6.38
J6.40
J6.42
3.1 Serial Peripheral Interface (SPI)
The ADSxx54 digital output is available in SPI-compatible format, which makes interfacing with
microprocessors, digital signal processors (DSPs), and FPGAs easy. The ADSxx54EVM offers 47-Ω
resistors between the SPI signals and connector J6 to aid with signal integrity. Typically, in high-speed
SPI communication, fast signal edges can cause overshoot; these 47-Ω resistors slow down the signal
edges in order to minimize signal overshoot.
2
3.2 I C Bus for Onboard EEPROM
The ADSxx54EVM has an I
name and assembly date. It is not used in any form by the ADSxx54 converter.
SBAU209 – April 2014
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Table 4. Connector J6 Pinout
Signal
GND Ground connections
EVM PRESENT EVM present, active low
2
I C bus; used only used to program the U7
2
I C™ bus
EEPROM on the EVM board
DVDD 3.3-V digital supply from SDCC controller board
CS Chip select, active low
SCLK Serial interface clock
SDI Serial data input
SDO_A Serial data output for channel A
SDO_B Serial data output for channel B
2
C bus to communicate with the onboard EEPROM that records the board
Copyright © 2014, Texas Instruments Incorporated
Description
ADS8354EVM-PDK and ADS7854EVM-PDK
Digital Interface
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