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W681307DG Datasheet, PDF (56/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM. | |||
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W681307
10. SPEECH INTERFACE
10.1
Overview
The Speech Interface allows the MCU chip to be connected to one or more of the following:
⢠External PCM CODEC and Echo Canceller.
⢠IO Ports which can be used when the external Speech Expansion Interface is not required.
⢠A test interface to and from the on-chip linear CODEC.
The Speech Interface Block also connects with the on-chip linear CODEC.
The Speech interface also contains three programmable outputs, which are used to control certain pins.
10.2
Functionality
Figure 10-1 shows the speech interface block diagram.
SPEECH PROCESSOR INTERFACE
Pcm0out[13:0]
Pcm0in[13:0]
Pcm1out[13:0]
Pcm1in[13:0]
Pcm2out[13:0]
Pcm2in[13:0]
adpcm_count[7:0]
adpcm_clock
PcmI[0] (PcmIn0/PcmClockI)
PcmI[1]
PcmO[1]
PcmD[1]
(PcmIn1)
PcmI[2]
PcmO[2]
PcmD[2]
PcmI[3]
PcmO[3]
PcmD[3]
(PcmOut1)
PcmI[4]
PcmO[4]
PcmD[4]
(PcmClock)
PcmI[5]
PcmO[5]
PcmD[5]
(PcmSyncO)
PCM
Serial
Interface
(PcmOut0)
SpeechIntrpt
SysClock2
SysClock3
SysClock5
SpeechCtrl1
SpeechIoD
SpeechIoIp
SpeechIoOp
SpeechIoMsk
SpeechCtrl0
ADrd DAwr ovclk
ref32k
ref8k
DFAin[13:0]
D[13:0]
DM
SysClock5
DIShp
ute
TxM
ON CHIP CODEC INTERFACE
Speech
Interface
Register
IntWriteData[7..0]
SpReadData[7:0]
SpReadValid
IntAddress[9..0]
SysClock2
SysClock3
RADCTRL[3:0]
Figure 10-1 Speech Interface Block Diagram
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Publication Release Date: May, 2007
Revision 1.3
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