STA333BW STMicroelectronics, STA333BW Datasheet - Page 55

• Manufacturer Part Number: STA333BW
• Manufacturer: STMicroelectronics

Specifications of STA333BW

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.2@8Ohm@1W%
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): 3.3/5/9/12/15/18V
• Power Supply Requirement: Quad
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 80dB
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): 2.7/4.5V
• Dual Supply Voltage (max): 3.6/21.5V
• Operating Temp Range: -20C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 36
• Package Type: PowerSSO EP
• Lead Free Status / Rohs Status: Compliant

STA333BW
6.7.8
Note:
Description
Coefficients for user-defined EQ, mixing, scaling, and bass management are handled
internally in the STA333BW via RAM. Access to this RAM is available to the user via an I
register interface. A collection of I
coefficient base address, five sets of three store the values of the 24-bit coefficients to be
written or that were read, and one contains bits used to control the read / write of the
coefficient(s) to/from RAM.
The read and write operation on RAM coefficients works only if LRCKI (pin 29) is switching.
Reading a coefficient from RAM
1.
2.
3.
4.
5.
Reading a set of coefficients from RAM
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Read middle 8-bits of coefficient a1 in I
11. Read bottom 8-bits of coefficient a1 in I
12. Read top 8-bits of coefficient a2 in I
13. Read middle 8-bits of coefficient a2 in I
14. Read bottom 8-bits of coefficient a2 in I
15. Read top 8-bits of coefficient b0 in I
16. Read middle 8-bits of coefficient b0 in I
17. Read bottom 8-bits of coefficient b0 in I
Writing a single coefficient to RAM
1.
2.
3.
4.
5.
Write 6-bits of address to I
Write 1 to R1 bit in I
Read top 8-bits of coefficient in I
Read middle 8-bits of coefficient in I
Read bottom 8-bits of coefficient in I
Write 6-bits of address to I
Write 1 to RA bit in I
Read top 8-bits of coefficient in I
Read middle 8-bits of coefficient in I
Read bottom 8-bits of coefficient in I
Read top 8-bits of coefficient b2 in I
Read middle 8-bits of coefficient b2 in I
Read bottom 8-bits of coefficient b2 in I
Read top 8-bits of coefficient a1 in I
Write 6-bits of address to I
Write top 8-bits of coefficient in I
Write middle 8-bits of coefficient in I
Write bottom 8-bits of coefficient in I
Write 1 to W1 bit in I
2
2
2
C address 0x26.
C address 0x26.
C address 0x26.
Doc ID 13773 Rev 3
2
2
2
C register 0x16.
C register 0x16.
C register 0x16.
2
C registers are dedicated to this function. One contains a
2
2
2
C address 0x17.
C address 0x17.
C address 0x17.
2
2
2
2
2
2
2
2
2
2
C address 0x1A.
C address 0x1D.
C address 0x20.
C address 0x23.
C address 0x18.
C address 0x18.
C address 0x18.
C address 0x19.
C address 0x19.
C address 0x19.
2
2
2
2
2
2
2
2
C address 0x1B.
C address 0x1E.
C address 0x21.
C address 0x24.
C address 0x1C.
C address 0x1F.
C address 0x22.
C address 0x25.
Register description
55/67
2
C