ADS1626IPAPR datasheet(29/38 Pages) TI2

29 / 38 page

ADS1625

ADS1626

SBAS280E − JUNE 2003 − REVISED MAY 2007

www.ti.com

INTERFACING THE ADS1625 TO THE

TMS320VC5510

Figure 30 illustrates how to connect the ADS1625 to the

TMS320VC5510 DSP. The DSP controls reading using

output ARE. The ADS1625 is selected using the DSP

control output CE2. The ADS1625 18-bit data output bus

is directly connected to the TMS320VC5510 data bus. The

data ready output from the ADS1625, DRDY, drives the

INT3 interrupt line on the TMS320VC5510.

DOUT[17:0]

ADS1625

DRDY

D[17:0]

TMS320VC5510

INT3

CE2

ARE

Figure 30. ADS1625—TMS320VC5510 Interface

Connection

INTERFACING THE ADS1626 TO THE

TMS320VC5510

Figure 31 illustrates how to directly connect the ADS1626

to the TMS320VC5510 Digital Signal Processor. The

processor controls reading the ADC using the ARE output.

The ADS1626 is permanently selected by grounding the

CS pin. If there are any additional devices connected to the

TMS320VC5510 I/O space, address decode logic will be

required between the ADC and the DSP to prevent data

bus contention and ensure that only one device at a time

is selected. The ADS1626 18-bit data output bus is directly

connected to the TMS320VC5510. The data ready output

from the ADS1626, DRDY, drives interrupt INT3 on the

TMS320VC5510.

DOUT[17:0]

ADS1626

DRDY

D[17:0]

TMS320VC5510

INT3

ARE

Figure 31. ADS1626—TMS320VC5510 Interface

Connection

Code Composer Studio, available from TI, provides

support for interfacing TI DSPs through a collection of data

converter plugins. Check the TI web site, located at

www.ti.com/sc/dcplug-in, for the latest information on

ADS1625/6 support.

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