AT73C240
10.11 DAC Miscellaneous Register
Register Name: DAC_MISC
Register Address: 0x0A
Reset State: 0x00
Access: Read/Write
7
Not Used
6
VCMCAPSEL
5
DINTSEL
4
3
DITHEN
2
DEEMPEN
1
NBITS
0
? NBITS<1:0>: Data interface word length
The selection of input sample size is done using the NBITS field.
NBITS <1:0>
00
01
10
Format
16 bits
18 bits
20 bits
? DEEMPEN: De-emphasis enable (L to disable, H to enable)
To enable the de-emphasis filtering the DEEMPHEN signal must be set to high.
? DITHEN: Dither enable (L to disable, H to enable)
The dither option (added in the playback channel) is enabled by setting the DITHEN signal to high.
? DINTSEL<1:0>: I2S data format selector
The selection between modes is done using the DINTSEL<1:0> signal.
DINTSEL<1:0>
00
01
1x
Format
I2S Justified
MSB Justified
LSB Justified
? VCMCAPSEL: VCM decoupling capacitor selector
Low for 10 μF, High for 100 μF
27
6464A–PMAAC–28-Apr-09
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