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STA350B Datasheet(PDF) 74 Page - STMicroelectronics

Part # STA350B
Description  2.1-channel high-efficiency digital audio system Sound TerminalR
PDF  94 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA350B Datasheet(HTML) 74 Page - STMicroelectronics

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Register description
STA350B, STA350BW
74/94
DocID018572 Rev 7
8.15
Fault detect recovery constant registers (addr 0x2B - 0x2C)
The FDRC bits specify the 16-bit fault detect recovery time delay. When FAULT is asserted,
the TRISTATE output is immediately asserted low and held low for the time period specified
by this constant. A constant value of 0x0001 in this register is approximately 0.083 ms. The
default value of 0x000C gives approximately 0.1 ms.
8.16
Device status register (addr 0x2D)
This read-only register provides fault and thermal-warning status information from the power
control block. Logic value 1 for faults or warning means normal state. Logic 0 means a fault
or warning detected on power bridge. The PLLUL = 1 means that the PLL is not locked.
D7
D6
D5
D4
D3
D2
D1
D0
FDRC15
FDRC14
FDRC13
FDRC12
FDRC11
FDRC10
FDRC9
FDRC8
0000
0000
D7
D6
D5
D4
D3
D2
D1
D0
FDRC7
FDRC6
FDRC5
FDRC4
FDRC3
FDRC2
FDRC1
FDRC0
0000
1100
D7
D6
D5
D4
D3
D2
D1
D0
PLLUL
FAULT
UVFAULT
OVFAULT
OCFAULT
OCWARN
TFAULT
TWARN
Table 72. Status register bits
Bit
R/W
RST
Name
Description
7
R
-
PLLUL
0:
PLL locked
1: PLL not locked
6R
-
FAULT
0: fault detected on power bridge
1: normal operation
5
R
-
UVFAULT
0: VCCxX internally detected
< undervoltage threshold
4
R
-
OVFAULT
0: VCCxX internally detected
> overvoltage threshold
3
R
-
OCFAULT
0: overcurrent fault detected
2
R
-
OCWARN
0: overcurrent warning
1R
-
TFAULT
0: thermal fault, junction temperature over limit
detection
0R
-
TWARN
0: thermal warning, junction temperature is close to
the fault condition



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