sta335bwsqs13tr STMicroelectronics, sta335bwsqs13tr Datasheet - Page 27

• Manufacturer Part Number: sta335bwsqs13tr
• Description: 2.1-channel, High-efficiency Digital Audio System With Qsound Qhd
• Manufacturer: STMicroelectronics

STA335BWSQS
6.1.4
6.1.5
6.2
6.2.1
Thermal warning adjustment bypass
Table 14.
The on-chip STA335BWSQS power output block provides feedback to the digital controller
using inputs to the power control block. The TWARN input is used to indicate a thermal
warning condition. When TWARN is asserted (set to 0) for a period of time greater than
400 ms, the power control block forces a -3 dB output limit (determined by TWOCL in the
coefficient RAM) to the modulation limit in an attempt to eliminate the thermal warning
condition. Once the thermal warning output limit adjustment is applied, it remains in this
state until reset, unless FDRB = 0.
Fault detect recovery bypass
Table 15.
The on-chip STA335BWSQS power output block provides feedback to the digital controller
using inputs to the power control block. The FAULT input is used to indicate a fault condition
(either over-current or thermal). When FAULT is asserted (set to 0), the power control block
attempts a recovery from the fault by asserting the 3-state output (setting it to 0 which
directs the power output block to begin recovery), holds it at 0 for period of time in the range
of 0.1 ms to 1 s as defined by the fault-detect recovery constant register (FDRC registers
0x29, 0x2A), then toggles it back to 1. This sequence is repeated as log as the fault
indication exists. This feature is enabled by default but can be bypassed by setting the
FDRB control bit to 1.
Configuration register B (addr 0x01)
Serial audio input interface format
Table 16.
Bit
Bit
Bit
6
7
0
1
2
3
C2IM
D7
1
RW
RW
RW
RW
RW
RW
RW
RW
RW
TWAB
FDRB
SAI
C1IM
D6
0
RST
RST
RST
1
0
0
0
0
0
DSCKE
D5
0
TWAB
Name
Name
FDRB
Name
SAI0
SAI1
SAI2
SAI3
SAIFB
D4
0
0: Thermal warning adjustment enabled
1: Thermal warning adjustment disabled
0: fault detect recovery enabled
1: fault detect recovery disabled
Determines the interface format of the input serial
digital audio interface.
SAI3
D3
0
Description
Description
Description
SAI2
D2
0
Register description
SAI1
D1
0
SAI0
D0
0
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