Datasheet

DF1704
12
SBAS099A
MODE2 Register
The MODE2 register is used to program various functions:
MUT Soft Mute Function.
When MUT = 0, Soft Mute is ON for both Left
and Right channels.
When MUT = 1, Soft Mute is OFF for both Left
and Right channels.
DEM Digital De-Emphasis Function.
When DEM = 0, de-emphasis is OFF.
When DEM = 1, de-emphasis is ON.
IW[1:0] Input Data Format and Word Length.
I
2
S IW1 IW0 Description
0 0 0 16-Bit Data, Standard
Format (MSB-First,
Right-Justified)
0 0 1 20-Bit Data, Standard
Format
0 1 0 24-Bit Data, Standard
Format
0 1 1 24-Bit Data, MSB-First,
Left-Justified
1 0 0 16-Bit Data, I
2
S Format
1 0 1 24-Bit Data, I
2
S format
1 1 0 Reserved
1 1 1 Reserved
OW[1:0] Output Data Word Length.
OW1 OW0 Description
0 0 16-Bit Data, MSB-First
0 1 18-Bit Data, MSB-First
1 0 20-Bit Data, MSB-First
1 1 24-Bit Data, MSB-First
MODE3 Register
The MODE3 register is used to program various functions.
I
2
S Input Data Format.
When I
2
S = 0, standard or left-justified formats
are enabled.
When I
2
S = 1, the I
2
S formats are enabled.
LRP LRCIN Polarity Selection.
When LRP = 0, Left channel is HIGH and Right
channel is LOW.
When LRP = 1, Left channel is LOW and Right
channel is HIGH.
ATC Attenuator Control.
This bit is used to determine whether the Left
and Right channel attenuators operate with inde-
pendent data, or use common data (the Left
channel data in bits AL[7:0] of register MODE0).
When ATC = 0, the Left and Right channel
attenuator data is independent.
When ATC = 1, the Left and Right channel
attenuators use common data.
SRO Digital Filter Roll-Off Selection.
When SRO = 0, sharp roll-off is selected.
When SRO = 1, slow roll-off is selected.
CKO CLKO Output Frequency Selection.
When CKO = 0, the CLKO frequency is the
same as the clock at the XTI input.
When CKO =1, the CLKO frequency is half of
the XTI input clock frequency.
SF[1:0] Sampling Frequency Selection for the De-Em-
phasis Function.
SF1 SF0 Description
0 0 44.1 kHz
0 1 Reserved
1 0 48 kHz
1 1 32 kHz