Digital Interface; Serial Interface (Spi); C Bus For Onboard Eeprom - Texas Instruments ADS8353EVM-PDK User Manual

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Digital Interface

Socket strip connector J6 provides the digital I/O connections between the ADSxx53EVM board and the
simple capture card board.
Table 4 summarizes the pin-outs 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 Interface (SPI)

The ADSxx53 digital output is available in SPI-compatible format, which makes interfacing with
microprocessors, digital signal processors (DSPs), and FPGAs easy. The ADSxx53EVM 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 ADSxx53EVM has an I
name and assembly date. It is not used in any form by the ADSxx53 converter.
SBAU210A – June 2014 – Revised August 2014
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Table 4. Connector J6 Pin Out
Signal
GND Ground connections
EVM PRESENT EVM present signal, active low
2
I C bus; used only used to program the U7
2
I C™ bus
EEPROM on the EVM board
3.3V digital supply from the simple capture card
DVDD
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
ADS8353EVM-PDK and ADS7853EVM-PDK
Digital Interface
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