sta339bws STMicroelectronics, sta339bws Datasheet - Page 64

• Manufacturer Part Number: sta339bws
• Description: 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description
6.15
6.16
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Fault detect recovery constant registers (addr 0x2B - 0x2C)
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.
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.
Table 73.
Bit
FDRC15
7
6
5
4
3
2
1
0
FDRC7
PLLUL
D7
D7
D7
0
0
R/W
R
R
R
R
R
R
R
R
Status register bits
FDRC14
FDRC6
FAULT
D6
D6
D6
0
0
RST
-
-
-
-
-
-
-
-
UVFAULT
FDRC13
FDRC5
D5
D5
D5
0
0
OCWARN
OCFAULT
UVFAULT
OVFAULT
TFAULT
TWARN
PLLUL
FAULT
Name
OVFAULT
FDRC12
FDRC4
D4
D4
D4
0
0
0:
1: PLL not locked
0: fault detected on power bridge
1: normal operation
0: VCCxX internally detected
< undervoltage threshold
0: VCCxX internally detected
> overvoltage threshold
0: overcurrent fault detected
0: overcurrent warning
0: thermal fault, junction temperature over limit
detection
0: thermal warning, junction temperature is close to
the fault condition
PLL locked
OCFAULT
FDRC11
FDRC3
D3
D3
D3
0
1
OCWARN
FDRC10
FDRC2
Description
D2
D2
D2
0
1
TFAULT
FDRC9
FDRC1
D1
D1
D1
0
0
STA339BWS
TWARN
FDRC8
FDRC0
D0
D0
D0
0
0