STA015B$ STMicroelectronics, STA015B$ Datasheet - Page 39

• Manufacturer Part Number: STA015B$
• Description: DECODER AUDIO MPEG 2.5 8X8LFBGA
• Manufacturer: STMicroelectronics
• Type: Audio Decoderr

Specifications of STA015B$

• Applications: Sound Cards, Players, Recorders
• Voltage - Supply, Digital: 2.4 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 64-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply, Analog: -

hancement is going to perform.
For example, in case of a 0 dB signal (max. level) only attenuation would be possible. If enhancement is
desired, the signal has to be attenuated accordingly before in order to reserve a margin in dB.
An increment of a decimal unit corresponds to a Tone Attenuation step of 1.5dB.
ANCILLARY DATA BUFFER
Address: 0x7E - 0xB5 (126 - 181)
Type: RO
Software Reset: 0x00
Hardware Reset: 0x00
The STA015 contains 56 consecutive 8-bit registers corresponding to the maximum number of ancillary
data that may be contained in MPEG frame.
The ANCCOUNT_L and ANCOUNT_H registers contain the number of ancillary data bits available within
the current MPEG frame.
To perform ancillary data reading a status register (0xB6 - INTERRUPT_STATUS_REGISTER) is avail-
able: bit 0 of this register should be polled by the microcontroller in order to understand when new data
are available.
ISR
Address: 0xB6 (182)
Type: R/W
Software Reset: 0x00
MSB
b7
0
0
0
0
0
0
0
b6
0
0
0
0
0
0
0
b5
0
0
0
0
0
0
0
b4
0
0
0
0
0
0
0
0x7E
0xB5
0xB6
.......
.......
.......
b3
0
0
1
0
1
1
1
b2
0
0
0
0
0
0
1
b1
0
0
1
1
1
1
0
ANC_DATA_56
ANC_DATA_1
LSB
.......
.......
.......
ISR
b0
0
1
0
1
0
1
0
:
:
ATTENUATION
1.5dB step
-1.5dB
4.5dB
-16.5
0dB
3dB
-15
-18
STA015
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