STA326 STMicroelectronics, STA326 Datasheet - Page 21

• Manufacturer Part Number: STA326
• Description: DIG AUDIO SYSTEM, 2-CH, 36POWERSSOP
• Manufacturer: STMicroelectronics

Specifications of STA326

• Svhc: No SVHC (15-Dec-2010)
• No. Of Pins: 36
• Operating Temperature Range: -20°C To +85°C
• Supply Voltage Max: 36V
• Supply Voltage Min: 10V
• Termination T: RoHS Compliant
• Package / Case: PowerSO
• Interface: I2C
• Interface Type: I2C
• Rohs Compliant: Yes

STA326
Table 15.
The on-chip STA326 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 greater than 400 ms, the power
control block will force an adjustment to the modulation limit in an attempt to eliminate the
thermal warning condition. Once the thermal warning volume adjustment is applied,
whether the gain is reapplied when TWARN is de-asserted is dependent on the TWRB bit.
Table 16.
The DDX
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 will attempt a
recovery from the fault by asserting the 3-state output (setting it to 0 which directs the power
output block to begin recovery). It 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 to 0x2A),
then toggle 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.
6
7
Bit
Bit
RW
RW
R/W
R/W
®
power block can provide feedback to the digital controller using inputs to the
Thermal warning adjustment bypass
Fault detect recovery bypass
1
0
RST
RST
TWAB
FDRB
Name
Name
Doc ID 11531 Rev 3
Thermal warning adjustment bypass:
0: thermal warning adjustment enabled
1: thermal warning adjustment disabled
Fault detector recovery bypass:
0: fault detector recovery enabled
1: fault detector recovery disabled
Description
Description
Register description
21/57