ST18AU1_DS View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST18AU1_DS' PDF : 87 Pages View PDF
ST18-AU1
Table 4.1 Write commands
Mnemonic
HostLpcmMixAlpha0-7
HostLpcmMixBeta0-7
HostErrorConcealMod
HostLowPower
HostSerialInputCtrl
HostSerialInoutDiv
HostSerialOutputCtrl
Opcode
Size
(bits)
0F-16 16
17-1E
1F 8
20 8
21
22
23
Command description and Parameter values
Linear PCM Downmixing Coefficients
In LPCM mode: Alphai is the coefficient to downmix the
channel i into the Left channel. Betai is the downmixing
coefficient for channel i into the Right channel.
In Ac-3 Karaoke mode: the Alpha0 to Alpha5 are used
to downmix respectively the Left, Melody, Right,
Vocal1, Vocal2 channels. Beta0 to Beta5 is respective-
ly used to downmix into the Right channel.
Alpha0 to Alpha7, Beta0 to Beta7.
Error Concealment Mode
Mute (default)
00
Disabled
01
Skip
02
Low Power Stand-by Mode
Off (default)
00
On
01
Serial Input Control
Defines the input format.
default: I2S slave
Serial Input Clock Division
In master mode define the clock rate of the input.)
Serial Output Control
Defines the output format.
default: I2s master
HostSerialOutputDiv
HostAudioClockSel
HostSamplFreq
HostPcmNbBits
WriteStc
24 16
25
26 16
27 16
80 32
Serial Output Clock Division
In master mode define the clock rate of the output.
default: set for 44.1 Hz
Audio Clock Selection
All clocks derived from the 27MHz (default)
11
Audio Sample Frequency (Hz)
3200
10
44100 (default)
00
48000
01
Number of bits per sample
16 (default)
16
18
18
20
20
System Time Clock
22/87
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