sta323wqs STMicroelectronics, sta323wqs Datasheet - Page 68

• Manufacturer Part Number: sta323wqs
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd??
• Manufacturer: STMicroelectronics

User-programmable settings
8.13.1
8.13.2
8.13.3
68/72
Thermal warning indicator
Table 70.
If the power stage thermal operating conditions are exceeded, the thermal warning indicator
transmits a signal to the digital logic block to initiate a corrective procedure. This register bit
is set to '0' to indicate a thermal warning and it reverts back to its default state as soon as
the cause of the thermal warning has been corrected.
Fault detect indicator
Table 71.
As soon as the power stage issues a Fault error signal, thereby initiating the Fault recovery
procedure described in
user. As soon as the fault condition (over-current or thermal) is corrected, this bit is reset
back to its default state.
PLL unlock indicator
Table 72.
Under normal conditions (with the correct clock) the PLL is locked into an internal clocking
frequency. However, if the clock is insufficient or if it is abruptly lost, the PLL lock state is lost
and this information is relayed to the user via setting the PLLUL bit of the Status register to
'1'. As soon as the PLL reverts back to a locked state, this bit is set to '0'.
0
1
7
Bit
Bit
Bit
R
R
R
Thermal warning indicator
Fault detect indicator
PLL unlock indicator
R/W
R/W
R/W
0
1
1
RST
Section
RST
RST
PLLUL
8.12, this register bit is set to '0' to indicate the error to the
Name
FAULT
RWRAN
Name
Name
0: normal operation (PLL is in a locked state)
1: PLL unlock is detected (due to probable
clock loss)
0: fault issued from the power stage
1: normal operation (no fault)
0: thermal warning detected
1: normal operation (no thermal warning)
Description
Description
Description
STA323WQS