Name | Texas Instruments DEM-PCM2912A EVM specification

Pin Assignments and Terminal Functionswww.ti.com

Table 1-1. PCM2912A Terminal Functions (continued)

	TQFP-36
Name	Terminal	I/O	Description
VCCR	21	-–	Analog power supply for headphone amplifier of R-channel
VOUTR	22	O	Headphone output for R-channel
MAMP	23	I	Microphone preamplifier gain control (LOW: Preamplifier off; HIGH: Preamplifier on = +20
			dB)
POWER	24	I	Power consumption declaration select pin (LOW: 100 mA; HIGH: 500 mA)
PGND	25	–	Analog ground for microphone bias, microphone amplifier, and PGA
VCCP	26	–	Analog power supply for PLL
TEST1	27	I	Test pin. Must be set to high.
TEST0	28	I	Test pin. Must be set to low.
SSPND	29	O	Suspend flag (LOW: Suspend; HIGH: Operational state)
MMUTE	30	I	Microphone mute control, active high (LOW: Mute off; HIGH: Mute on)
REC	31	O	Status output for record (LOW: Record; FLASH: Mute on record; HIGH: Stop)
PLAY	32	O	Status output for playback (LOW: Playback; FLASH: Mute on playback; HIGH: Stop)

12	Description	SBAU141–January 2009
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Texas Instruments DEM-PCM2912A EVM manual Name

Contents

Users Guide Submit Documentation Feedback Contents List of Figures List of Tables Submit Documentation Feedback About This Manual How to Use This Manual Read This FirstInformation About Cautions and Warnings Related Documentation From Texas Instruments If You Need Assistance FCC WarningTrademarks Description Pin Assignments and Terminal Functions Key Features Introduction-PCM2912A Pin Assignments and Terminal Functions TopView Name Functional Block Diagram DEM-PCM2912A EVM Functional Block Diagram Submit Documentation Feedback Getting Started Block Diagram DEM-PCM2912A EVM ConnectorsElectrostatic Discharge Warning Interface and Connections Set-Up Guide Basic Operating Set-Up-Windows Vista Basic Operating Set-Up-Windows Vista Windows Vista Volume and Mute Settings To set the record volume Sampling Frequency To set the ADC sampling frequency Basic Operating Set-Up-Windows XP Sound and Audio Devices Properties-Audio Tab Windows XP Volume Settings Speaker Window for Volume Setting Windows XP Basic Operating Set-Up-Windows XP Basic Operating Set-Up-Mac OS 12. Sound-Input Tab Mac OS 13. Sound-Output Tab Mac OS 14. Audio Midi Setting Window Mac OS 15. QuickTime Audio Recording Controls 16. Audio Midi Setting Window Mac OS Submit Documentation Feedback Measurements for Dynamic Characteristics Evaluation and Measurements Measurements for Dynamic Characteristics Playback Performance Line Output Playback Performance ΩHeadphone Output Playback Performance Recording Performance Dout Schematic, PCB Layout, and Bill of Materials Schematics Printed Circuit Board Layout Component List Schematics DEM-PCM2912A EVM Schematic Printed Circuit Board Layout DEM-PCM2912A EVM Board Layout-Silkscreen Component List Bill of Materials Value2 Evaluation BOARD/KIT Important Notice FCC Warning Important Notice