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PDF STA308A Data sheet ( Hoja de datos )
| Número de pieza | STA308A | |
| Descripción | Multi-channel digital audio processor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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STA308A
Multi-channel digital audio processor with DDX™
Features
! 8 channels of 24-bit DDX®
! >100 dB SNR and dynamic range
! Selectable 32 kHz - 192 kHz input sample rates
! 6 channels of DSD/SACD input
! Digital gain/attenuation +58 dB to -100 dB in
0.5 dB steps
! Soft volume update
! Individual channel and master gain/attenuation
plus channel trim (-10 dB to +10 dB)
! Up to 10 independent 32-bit user
programmable biquads (EQ) per channel
! Bass/treble tone control
! Pre and post EQ full 8-channel input mix on all
8 channels
! Dual independent limiters/compressors
! Dynamic range compression or anti-clipping
modes
! AutoModes:
– 5-band graphic EQ
– 32 preset EQ curves (rock, jazz, pop, etc.)
– Automatic volume controlled loudness
– 5.1 to 2-channel downmix
– Simultaneous 5.1- and 2-channel downmix
outputs
– 3 preset volume curves
– 2 preset anti-clipping modes
– Preset movie nighttime listening mode
– Preset TV channel/commercial AGC mode
– 5.1, 2.1 bass management configurations
– AM frequency automatic output PWM
frequency shifting
– 8 preset crossover filters
! Individual channel and master soft/hard mute
! Automatic zero-detect and invalid input mute
! Automatic invalid input detect mute
TQFP64
! Advanced PopFree operation
! Advanced AM interference frequency
switching and noise suppression modes
! I2S output channel mapping function
! Independent channel volume and DSP bypass
! Channel mapping of any input to any
processing/DDX® channel
! DC blocking selectable high-pass filter
! Selectable per-channel DDX® damped ternary
or binary PWM output
! Max power correction for lower full-power THD
! Variable per channel DDX® output delay control
! 192 kHz internal processing sample rate, 24-bit
to 36-bit precision
Description
The STA308A is a single chip solution for digital
audio processing and control in multi-channel
applications. It provides output capabilities for
DDX® (direct digital amplification). In conjunction
with a DDX® power device, it provides high-
quality, high-efficiency, all digital amplification.
The device is extremely versatile, allowing for
input of most digital formats including 6.1/7.1-
channel and 192 kHz, 24-bit DVD-audio,
DSD/SACD. In 5.1 application the additional 2
channels can be used for audio line-out or
headphone drive. In speaker mode, with 8
channel outputs in parallel, the STA308A can
deliver 1 W (maximum).
Table 1. Device summary
Order code
Package
STA308A
TQFP64
July 2007
Rev 4
1/63
www.st.com
63
http://www.Datasheet4U.com
1 page  
STA308A
Contents
7.5 Writing a single coefficient to RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.6 Writing a set of coefficients to RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8 Equalization and mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.1 Post-scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.2 Variable max power correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.2.1 MPCC1-2 (0x4D, 0x4E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.3 Variable distortion compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.3.1 DCC1-2 (0x4F, 0x50) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8.4 PSCorrect registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.4.1 PSC1-2: ripple correction value (RCV) (0x51, 0x52) . . . . . . . . . . . . . . . 59
8.4.2 PSC3: correction normalization value (CNV) (0x53) . . . . . . . . . . . . . . . 59
9 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10 Trademarks and other acknowledgements . . . . . . . . . . . . . . . . . . . . . . 61
11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5/63
5 Page 
STA308A
Table 2. Pin description (continued)
Pin Type
Name
48
3.3-V capable TTL 2mA
output buffer
OUT2A
49
3.3-V capable TTL 2mA
output buffer
OUT1B
50
3.3-V capable TTL 2mA
output buffer
OUT1A
51
3.3-V capable TTL 4mA
output buffer
EAPD
55
3.3-V capable TTL 2mA
output buffer
BICKO
56
3.3-V capable TTL 2mA
output buffer
LRCKO
57
3.3-V capable TTL 2mA
output buffer
SDO_12
58
3.3-V capable TTL 2mA
output buffer
SDO_34
62
3.3-V capable TTL 2mA
output buffer
SDO_56
63
3.3-V capable TTL 2mA
output buffer
SDO_78
64
5-V tolerant TTL schmitt
trigger input buffer
PWDN
3,12,28,35,
44,52,59
3.3-V digital supply voltage
VDD
2,4,13,27,
36,45,53,60
Digital ground
GND
5, 14, 22,
26,37,46,54,
61
NC
Pin connections
Description
PWM channel 2 output A
PWM channel 1 output B
PWM channel 1 output A
Ext. amp power-down
Output serial clock
Output left/right clock
Output serial data channels 1&2
Output serial data channels 3&4
Output serial data channels 5&6
Output serial data channels 7&8
Device power-down
3.3-V supply
Ground
Not connected
11/63
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| PDF Descargar | [ Datasheet STA308A.PDF ] | |
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