STA333W STMicroelectronics, STA333W Datasheet - Page 37

• Manufacturer Part Number: STA333W
• Description: DIG AUDIO SYSTEM, 2-CH, 36POWERSSOP
• Manufacturer: STMicroelectronics

Specifications of STA333W

• Svhc: No SVHC (15-Dec-2010)
• Package / Case: PowerSSO
• Interface: I2S
• No. Of Pins: 36
• Operating Temperature Range: 0°C To +70°C
• Supply Voltage Max: 18V
• Supply Voltage Min: 4.5V
• Termination T: RoHS Compliant
• Interface Type: I2S
• Rohs Compliant: Yes

STA333W
6.9
6.10
Table 45.
Reserved registers (addr 0x2E, 0x2F, 0x30, 0x31)
These registers are not to be used.
Postscale registers (addr 0x32, 0x33)
Postscale
The STA333W provides one additional multiplication after the last interpolation stage and
the distortion compensation on each channel, which can be used to limit the maximum
modulation index and therefore the peak current through the power device. The register
values represent an 8-bit signed fractional number. This number is extended to a 24-bit
number, by adding zeros to the right, and then directly multiplied by the data on that
channel. An independent postscale is provided for each channel but all channels can use
channel 1 postscale factor by setting the postscale link bit. By default, all postscale factors
are set to 0x7F (pass-through).
2
3
4
5
6
7
Bit
C1PS7
C2PS7
D7
D7
0
0
RO
RO
-
RO
RO
RO
R/W
Status bits description (continued)
C1PS6
C2PS6
D6
D6
1
1
-
-
-
-
-
-
RST
C1PS5
C2PS5
OCWARN
OCFAULT
-
UVFAULT
FAULT
PLLUL
D5
D5
1
1
Doc ID 13365 Rev 2
Name
C1PS4
C2PS4
D4
D4
1
1
Overcurrent warning:
0: warning
1: normal operation
Overcurrent fault:
0: fault detected
1: normal operation
Reserved
Undervoltage warning:
0: VCCx below lower voltage threshold
1: normal operation
Power bridge fault:
0: fault detected
1: normal operation
PLL lock:
0: locked
1: not locked
C1PS3
C2PS3
D3
D3
1
1
Description
C1PS2
C2PS2
D2
D2
1
1
Register description
C1PS1
C2PS1
D1
D1
1
1
C1PS0
C2PS0
D0
D0
1
1
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