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STA381BW Datasheet(PDF) 26 Page - STMicroelectronics

Part # STA381BW
Description  Sound Terminal® 2.1-channel high-efficiency digital audio system
PDF  174 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA381BW Datasheet(HTML) 26 Page - STMicroelectronics

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Electrical specifications
STA381BW
26/174
DocID018835 Rev 8
3.6
Power-on/off sequence
Figure 4. Power-on sequence
Note:
The definition of a stable clock is when fmax - fmin < 1 MHz. Section 6.14.1: Serial data
interface gives information on setting up the I2S interface.
Figure 5. Power-off sequence for pop-free turn-off
Note:
The register addresses for Soft Mute and Soft EAPD refer to Sound Terminal compatibility
(see Section 7: Register description: Sound Terminal compatibility on page 106) and are not
the default addresses.
Don’t care
Don’t care
CMD0
CMD1
CMD2
Don’t care
Don’t care
CMD0
CMD1
CMD2
Don’t care
Don’t care
Don’t care
CMD0
CMD1
CMD2
Don’t care
Don’t care
CMD0
CMD1
CMD2
Don’t care
Don’t care
CMD0
CMD1
CMD2
Don’t care
Note: no specific VCC and
VDD_DIG turn
−on sequence
is required
TR = minimum time between XTI master clock stable and Reset removal: 1 ms
TC = minimum time between Reset removal and I2C program, sequence start: 1ms
VCC
VDD_DIG
XTI or BICKI
HW RESET
I
2C
HW PWDN
TR
TC
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Don’t care
Note: no specific VCC and
VDD_DIG turn
−off sequence
is required
VCC
VDD_DIG
XTI or BICKI
Soft Mute
Soft EAPD
Reg. 0x07
Data 0xFE
Reg. 0x05
Bit 7 = 0
FE



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