STA339BWS datasheet(27/79 Pages) STMICROELECTRONICS

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STA339BWS

Fault detect recovery bypass

The on-chip power block provides feedback to the digital controller which is used to indicate

a fault condition (either overcurrent or thermal). When fault is asserted, the power control

block attempts a recovery from the fault by asserting the 3-state output, holding it for period

of time in the range of 0.1 ms to 1 second, as defined by the fault-detect recovery constant

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. The fault condition is also

asserted by a low-state pulse of the normally high INT_LINE output pin.

7.1.2

Configuration register B (addr 0x01)

Serial audio input interface format

Serial data interface

The STA339BWS audio serial input interfaces with standard digital audio components and

accepts a number of serial data formats. STA339BWS always acts as 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 SDI.

Bits SAI and bit SAIFB are used to specify the serial data format. The default serial data

format is I2S, MSB first. Available formats are shown in the tables and figure that follow.

Serial data first bit

Table 16. Fault detect recovery bypass

Bit

R/W

RST

Name

Description

R/W

FDRB

0: fault detect recovery enabled

1: fault detect recovery disabled

C2IM

C1IM

DSCKE

SAIFB

SAI3

SAI2

SAI1

SAI0

10000000

Table 17. Serial audio input interface

Bit

R/W

RST

Name

Description

R/W

SAI0

Determines the interface format of the input serial

digital audio interface.

R/W

SAI1

R/W

SAI2

R/W

SAI3

Table 18. Serial data first bit

SAIFB

Format

MSB-first

LSB-first

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