W681307DG Datasheet, PDF (60/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
10.5.6
Speech IO Mask
Address
Access Mode
0x1465
R/W
Value At Reset
0x00
Nominal Value
Bit 7
Reserved
Bit 6
Reserved
Bit 5
Reserved
Bit 4
Reserved
Bit 3
Bit 2
Bit 1
Bit 0
SpeechIOM[3] SpeechIOM[2] SpeechIOM[1] SpeechIOM[0]
SpeechIOM[3:0]
10.5.7
Fsync Counter
When PCM interface configured as input port, this register mask the interrupt when PCM
interface input port is interrupted.
Address
0x1466
Access Mode Value At Reset Nominal Value
R
0x00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reserved
Fsync-Counter
Fsync-Counter
Provide the status of the frame sync counter within the speech interface.
10.6
10.6.1
The multiplexer to connect 5 PCM channels to 4 processor channels
Multiplexer control register
Address
0x1467
Access Mode Value At Reset Nominal Value
R/W
0x11
Bit 7
Reserved
Bit 6
Reserved
Bit 5
Reserved
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PCM channel4 PCM channel3 PCM channel2 PCM channel1 PCM channel0
The function of the multiplexer is to choose 4 channels among the 5 PCM channels to be effective which can be connected to 4 processor
channels by setting the multiplexer control register 0x1467. And the four processor channels labeled by from C0 to C3 will connect to the
effective PCM channels in numerical order of the channel label.The PCM channel4 (B4) have two input source: USB ISO input and
external pcm device. It is controlled by USB_EN bit. Setting USB_EN =1, the USB ISO data pass to pcm channel 4 .
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Publication Release Date: May, 2007
Revision 1.3