STAC9460 Datasheet, PDF (16/21 Pages) List of Unclassifed Manufacturers – Two and Six-Channel, 24-Bit, 192 kHz Audio Codec

PRELIMINARY INFORMATION 8/24/01
STAC9460/62
Two and Six-Channel, 24-Bit, 192 kHz Audio Codec
7.1.7.
General Purpose Register (0Dh)
The MSB (MD) selects between the MIC inputs and the DIFF inputs being routed to
the ADCs. Bit D6 (HPFD) disables the ADC pass filter capability. The ADC High
Pass FIlter Freeze, bit D4, maintains the high pass filter output’s current DC offset
HPFF
0
1
FUNCTION
ADC High Pass Filter Not-Frozen
ADC High Pass Filter Frozen
Table 12. Bit D4: HPFD
MD
FUNCTION
0
Differential Input Selected
1
Microphone Selected
Table 13. Bit D5 Microphone Differential Mux By-Pass Control
HPFD
0
1
FUNCTION
ADC High Pass Filter Enabled
ADC High Pass Filter Disabled
Table 14. Bit D6 ADC High Pass Filter Disable
7.1.8.
Audio Port Control (0Eh)
The I²S port is controlled via the bits contained in this register. Formatting is con-
trolled by the Audio Data Format bits, ADF4..ADF0 (bits D4 .. D0) of the register.
The audio formats available are standard I²S, Left Justified, Right Justified (16, 20,
or 24-Bit) and One Line.
ADF4 .. ADF0
D4..D0
00000
00001
00010
01010
10010
00011
*
AUDIO DATA FORMAT
I²S
Left Justified
16 bit Right Justified
20 bit Right Justified
24 bit Right Justified
One Line
All settings not shown are Reserved
Table 15. Audio Data Format Selection
16
2-9460-D1-1-0-0801