STA3398 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STA3398
STMicroelectronics
'STA3398' PDF : 78 Pages View PDF
Register description
STA339BW
7.1.5
The on-chip STA339BW power output block provides feedback to the digital controller using
inputs to the power control block. Input TWARN 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
Bit R/W
7
R/W
Table 17. Fault detect recovery bypass
RST
Name
Description
0
FDRB
0: fault detect recovery enabled
1: fault detect recovery disabled
The on-chip STA339BW 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 overcurrent or thermal). When FAULT is asserted (set to 0), the power control block
attempts a recovery from the fault by asserting the tri-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 second as defined by the fault-detect recovery constant register (FDRC
registers 0x2B-0x2C), 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.
7.2
7.2.1
Configuration register B (addr 0x01)
D7
C2IM
1
D6
C1IM
0
D5
DSCKE
0
D4
SAIFB
0
D3
SAI3
0
D2
SAI2
0
D1
SAI1
0
D0
SAI0
0
Serial audio input interface format
Bit R/W
0
R/W
1
R/W
2
R/W
3
R/W
Table 18. Serial audio input interface
RST
Name
Description
0
SAI0
0
SAI1
0
SAI2
0
SAI3
Determines the interface format of the input serial
digital audio interface.
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