Texas Instruments SLAU081 manual ADC and DAC Direct Access, Host Communication

ADC and DAC Direct Access

2.5 ADC and DAC Direct Access

J10 and J11 offer users the facility to directly inspect the digital signals coming from and going to the ADC and DAC.

Reference	Description	Pin		Signal
Designator		Number
J10	Allows the user direct access to all digital signals for the ADC	1	Digital ground
		2	SDO
		3	Digital ground
		4	SCLK
		5	Digital ground
		6		or
			CS		CS/FS
		7	Digital ground
		8	FS
J11	Allows the user direct access to all digital signals for the DAC	1	Digital ground
		2	SDI
		3	Digital ground
		4	SCLK
		5	Digital ground
		6
			CS
		7	Digital ground
		8	FS

2.6 Host Communication

There are two ways to connect a host system (DSP/microprocessor):

-Texas Instruments’ new DSKs provide two dedicated 80-pin connectors. The EVM can be plugged directly onto these DSKs. This connector standard is referred to as the common connector.

-Legacy DSKs not equipped with the 80-pin common connectors will communicate via the daisy-chained legacy header.

The following sections discuss each connection method.

Getting Started 2-11