sta381bw STMicroelectronics, sta381bw Datasheet - Page 59

• Manufacturer Part Number: sta381bw
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

STA381BW
6.14
6.14.1
The on-chip STA381BW 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 0x3C-
0x3D), then toggles it back to 1. This sequence is repeated as long 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 0x12)
Serial data interface
The STA381BW audio serial input was designed to interface with standard digital audio
components and to accept a number of serial data formats. The STA381BW always acts as
the slave when receiving audio input from standard digital audio components. Serial data for
two channels is provided using three inputs: left/right clock LRCKI, serial clock BICKI, and
serial data 1 and 2 SDI12.
The SAI bits (D3 to D0) and the SAIFB bit (D4) are used to specify the serial data format.
The default serial data format is I
that follow.
C2IM
D7
1
C1IM
D6
0
DSCKE
D5
0
Doc ID 018835 Rev 2
2
S, MSB-first. Available formats are shown in the tables
SAIFB
D4
0
SAI3
D3
0
Register description: New Map
SAI2
D2
0
SAI1
D1
0
SAI0
D0
0
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