STW5094A Datasheet, PDF (23/51 Pages) STMicroelectronics – 18-bit Low Power Asynchronous Stereo Audio DAC with Integrated Power Amplifiers and Voice Codec

STw5094A
Control Register CR21 Functions (Address: 0x15)
7
6
MD(1:0)
5
4
CFM(1:0)
3
2
1
0
SRS PU
Function
0
0
0
1
1
0
1
1
Voice Mode
*
Audio Mode.
Tone Only Mode.
FM Mode.
0
0
0
1
1
X
The Master Clock Input for Tone Only and FM Mode is AUXCLK*
The Master Clock Input for Tone Only and FM Mode is MCLK
The Master Clock Input for Tone Only and FM Mode is AMCK
XX
0
Normal Operation
*
1
Software Reset, all registers are set to their default.
0 Device is in Power Down
*
1 Device is in Power Up
*: state at power on initialization
X: reserved write 0
Note: In Audio mode or when AMCK Master Clock is selected, the true frequency value is obtained by multiplying the value of the table (F1/
F2 Tone Frequency) by the following constant: k=(f_AMCK/f_DIV) where f_AMCK is the frequency of AMCK expressed in Hz and f_DIV=
6144000·(AMCK_DIV+2), where AMCK_DIV is the content of CR18, bits1-0.
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