Texas Instruments DEM-DAI3793A manual Contents

Contents

Preface				9
1	Description		..............................................................................................................	11
	1.1	Introduction—PCM3793A/94A		12
		1.1.1	Key Features	12
	1.2	Pin Assignments and Terminal Functions		14
	1.3	DEM-DAI3793A/3794A EVM Description		15
2	Getting Started			17
	2.1	Electrostatic Discharge Warning		18
	2.2	Unpacking the EVM		18
	2.3	Default Configuration		19
3	Set-Up Guide			21
	3.1	Basic Operating Set-Up		22
	3.2	Software Control and Operation		22
		3.2.1	User Interface Panel	22
		3.2.2	Power On/Off Sequence	23
		3.2.3	Module Function Controls	23
		3.2.4 LC89052T (DIR: Digital Audio I/F Receiver) Control Window		39
		3.2.5	Register Setting History	40
		3.2.6	Register Direct Access	42
4	Switches and Connectors			43
	4.1	Overview		44
	4.2	Motherboard		44
	4.3	Daughter Card #1 (PCM3793A)		46
	4.4	Daughter Card #2 (DIR: LC89052T and DIT: DIT4096)		48
5	Evaluation and Measurements			49
	5.1	Slave Mode With Audio Precision SYS-2722 (Default Setting)		50
	5.2	Master Mode with Audio Precision SYS-2722		52
	5.3	Combined Master and Slave Modes With PSIA-2722		54
	5.4	Measurements for Dynamic Characteristics		55
		5.4.1	Digital-to-Analog (D/A) Performance	56
		5.4.2	Analog-to-Digital (A/D) Performance	57
		5.4.3 Speaker Output Power Performance		57
		5.4.4 Amplitude Versus Frequency Performance		59
	5.5	Connection Diagram for Practical Applications		61
		5.5.1 Filter Consideration for Speaker Output		62
6	Schematic, PCB Layout, and Bill of Materials			63
	6.1	Schematics		64
	6.2	Printed Circuit Board Layout		66
	6.3	Component List		71
A	Reference .csv Files, Interfacing to DSPs, and Package Information			73
	A.1	Reference .csv Files		74
		A	Related Signal Flow Diagrams	75
SBAU127 –July 2007			Contents	3

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