W681307DG Datasheet, PDF (110/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
14.1.2
CODEC Digital Part
Address
0x1501
Access Mode Value At Reset Nominal Value
R/W
0x80
90
Bit 7
ABF_MODE
Bit 6
Bit 5
DAC_Dither_Level[1:0]
Bit 4
DAC_Dither
_Enable
Bit 3
Bit 2
ADC_ABF_Length[1:0]
Bit 1
Bit 0
CODEC_FIFO_ CODEC_FIFO_
PTR_Reset
Reset
CODEC_FIFO_Reset
CODEC_FIFO_PTR_Reset
ADC_ABF_Length[1:0]
DAC_Dither_Enable
DAC_Dither_Level[1:0]
ABF_MODE
When set, Clear CODEC FIFO content after each 8K operation.
When set, Reset CODEC FIFO pointer after each 8K operation.
Select the limit cycle length to do adaptive bit flipping (ABF) algorithm.
ABF_L[1:0]
Limit cycle Length
0
4
1
6
2
8
3
10
When set, enable the dither input in DAC path
Select the dither level in the DAC path.
DA_Dither_Level[1:0]
Dither Level
0
17 bit
1
15 bit
2
16 bit
3
18 bit
When set, select adaptive bit flipping algorithm (ABF) mode in the analog CODEC modulator.
14.2
ADC Adaptive Bit Flip Probability
Address
0x1502
Access Mode Value At Reset Nominal Value
R/W
0xFF
80
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ADC_ABF_PROB
This byte set the adaptive bit flip probability of the ADC path in the CODEC modulator. When set ADC_ABF_PROB to 0xFF will
disable the adaptive bit-flipping algorithm, and set to 0x00 means always enable the adaptive bit-flipping algorithm if the limit cycle
length condition is detected.
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Publication Release Date: May, 2007
Revision 1.3