PCM9211PTR

Manufacturer Part NumberPCM9211PTR
DescriptionIC TXRX DGTL AUDIO 216KHZ 48LQFP
ManufacturerTexas Instruments
TypeTransceiver
PCM9211PTR datasheet
 


Specifications of PCM9211PTR

ApplicationsHome TheaterMounting TypeSurface Mount
Package / Case48-LQFPLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names296-27688-2  
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ADC Level Detect and Interrupt
The PCM9211 has the ability to monitor audio inputs, which can be used to trigger interrupt outputs on port INT1.
The ADC has a level monitor that can be set so that INT1 can be triggered whenever a specific level (referenced
to 0dBFS) is crossed. A block diagram for this function is shown in
ADC Core
24
ERROR
NPCM
EMPH
DTSCD
CSRNW
PCRNW
FSCHG
7
DIR Core
ERROR
2
NPCM
Figure 18. Block Diagram for ADC Level Detection
Operation of the level detect circuitry is shown in
channel goes high. The flag is cleared when Register 2Dh is read.
VINL
VINR
LVL DET Flag
NPCM/INT1 pin
Register 2Dh_B0
2
SPI/I C
Figure 19. Operation of the ADC Level Detect Circuitry
Copyright © 2010, Texas Instruments Incorporated
Figure
MainPort/MPIO
Matrix
Level
INT
Detector
ADDTLV[1:0]
ERROR/
NPCM
Figure
19. The ADC level detect is flagged when either ADC
Read Register 2Dh
Product Folder Link(s):
PCM9211
PCM9211
SBAS495 – JUNE 2010
18.
MainPort/
MPIOs
SPI/I2C
8
REG
ERROR/INT0
NPCM/INT1
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