STA3398 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STA3398
STMicroelectronics
'STA3398' PDF : 78 Pages View PDF
STA339BW
Register description
7.15 Fault detect recovery constant registers (addr 0x2B - 0x2C)
D7
FDRC15
0
D6
FDRC14
0
D5
FDRC13
0
D4
FDRC12
0
D3
FDRC11
0
D2
FDRC10
0
D1
FDRC9
0
D0
FDRC8
0
D7
FDRC7
0
D6
FDRC6
0
D5
FDRC5
0
D4
FDRC4
0
D3
FDRC3
1
D2
FDRC2
1
D1
FDRC1
0
D0
FDRC0
0
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.
7.16
Device status register (addr 0x2D)
D7
PLLUL
D6
FAULT
D5
UVFAULT
D4
OVFAULT
D3
OCFAULT
D2
OCWARN
D1
TFAULT
D0
TWARN
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.
Bit R/W
7
R
6
R
5
R
4
R
3
R
2
R
1
R
0
R
Table 74. Status register bits
RST
Name
Description
-
PLLUL
0: PLL locked
1: PLL not locked
-
FAULT
0: fault detected on power bridge
1: normal operation
-
UVFAULT
0: VCCxX internally detected
1: undervoltage threshold
-
OVFAULT
0: VCCxX internally detected
1: overvoltage threshold
-
OCFAULT
0: overcurrent fault detected
-
OCWARN
0: overcurrent warning
-
TFAULT
0: thermal fault, junction temperature over limit
-
TWARN
0: thermal warning, junction temperature is close to
fault condition
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