Datasheet

RecordSequence
D+/D–
V L
IN
V R
IN
1ms
SET_INTERFACE
AudioData
IN Token
AudioData
IN Token
AudioData
IN Token
SOF SOF SOF SOF SOF
T0259-01
SuspendandResumeSequence
5ms
D+/D–
SSPND
Idle
Active Active
Suspend
T0057-02
PCM2900B
PCM2902B
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ThePCM2900B/2902BstartstheaudiocaptureintotheinternalmemoryafterreceivingtheSET_INTERFACE
command,asshowninFigure34.
Figure34.RecordSequence
ThePCM2900B/2902BentersthesuspendstateafteritseesaconstantidlestateontheUSBbus
(approximately5ms),asshowninFigure35.WhilethePCM2900B/2902Bentersthesuspendstate,SSPND
flag(pin28)isasserted.ThePCM2900B/2902Bwakesupimmediatelyupondetectinganon-idlestateonthe
USBbus.
Figure35.SuspendandResumeSequence
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