sta339bw STMicroelectronics, sta339bw Datasheet - Page 64

• Manufacturer Part Number: sta339bw
• Description: 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description
6.15
6.16
64/77
Fault detect recovery constant registers (addr 0x2B - 0x2C)
FDRC bits specify the 16-bit fault detect recovery time delay. When FAULT is asserted, the
TRISTATE output is immediately asserted low and held low for the time period specified by
this constant. A constant value of 0x0001 in this register is approximately 0.083 ms. The
default value of 0x000C gives approximately 0.1 ms.
Device status register (addr 0x2D)
This read-only register provides fault- and thermal-warning status information from the
power control block. Logic value 1 for faults or warning means normal state. Logic 0 means
a fault or warning has been detected on the power bridge. The PLLUL = 1 means that the
PLL is not locked.
Table 73.
7
6
5
4
3
2
1
0
Bit
FDRC15
FDRC7
PLLUL
D7
D7
D7
0
0
R
R
R
R
R
R
R
R
R/W
Status register bits
FDRC14
FDRC6
FAULT
D6
D6
D6
0
0
-
-
-
-
-
-
-
-
RST
PLLUL
FAULT
UVFAULT
OVFAULT
OCFAULT
OCWARN
TFAULT
TWARN
UVFAULT
FDRC13
FDRC5
D5
D5
D5
0
0
Doc ID 15251 Rev 4
Name
OVFAULT
FDRC12
FDRC4
D4
D4
D4
0
0
0:
1: PLL not locked
0: fault detected on power bridge
1: normal operation
0: VCCxX internally detected
1: undervoltage threshold
0: VCCxX internally detected
1: overvoltage threshold
0: overcurrent fault detected
0: overcurrent warning
0: thermal fault, junction temperature over limit
0: thermal warning, junction temperature is close to
fault condition
PLL locked
OCFAULT
FDRC11
FDRC3
D3
D3
D3
0
1
OCWARN
FDRC10
FDRC2
Description
D2
D2
D2
0
1
TFAULT
FDRC9
FDRC1
D1
D1
D1
0
0
STA339BW
TWARN
FDRC8
FDRC0
D0
D0
D0
0
0