8169 Datasheet, PDF (1/30 Pages) STMicroelectronics – DIGITAL AUDIO PROCESSOR WITH MULTICHANNEL DDX™

STA304A
DIGITAL AUDIO PROCESSOR WITH MULTICHANNEL DDX™
PRODUCT PREVIEW
s STA304AEND TO END DIGITAL AUDIO
INTEGRATED SOLUTION
s · DSP Functions:
- DIGITAL VOLUME CONTROL
- SOFT MUTE
- BASS and TREBLE
- PARAMETRIC EQ PER CHANNEL
- BASS MANAGEMENT FOR SUBWOOFER
- AUTO MUTE ON ZERO INPUT DETECTION
s 4+1 DIRECT DIGITAL AMPLIFICATION
(DDX™) OUTPUT CHANNELs
s 6 CHANNELs PROGRAMMABLE SERIAL
OUTPUT INTERFACE (by default I2S)
s 4 CHANNELs PROGRAMMABLE SERIAL
INPUT INTERFACE (by default I2S)
s STEREO S/PDIF INPUT INTERFACE
s Intel AC'97 LINK (rev. 2.1) INPUT INTERFACE
FOR AUDIO AND CONTROL
s ON CHIP AUTOMATIC INPUT SAMPLING
FREQUENCY DETECTION
s 100 dB SNR SAMPLE RATE CONVERTER
(1KHz SINUSOIDAL INPUT)
s I²C CONTROL BUS
s LOW POWER 3.3V CMOS TECHNOLOGY
TQFP44
ORDERING NUMBER: STA304A
s EMBEDDED PLL FOR INTERNAL CLOCK
GENERATION (1024x48 kHz = 49.152 MHz)
s 6.144 MHz EXTERNAL INPUT CLOCK OR
BUILT-IN INDUSTRY STANDARD XTAL
OSCILLATOR
s VARIABLE DIGITAL GAIN UP TO 24dB
(0.75dB STEP)
1.0 DESCRIPTION
The STA304A Digital Audio Processor is a single
chip device implementing end to end digital solution
for audio application. In conjunction with STA500
power bridge it gives the full digital DSP-to-power
high quality chain with no need for audio Digital-to-
Analog converters between DSP and power stage.
BLOCK DIAGRAM
SA SCL SDA
11
10 9
LRCKI / SYNC 3
BICKI / BIT_CL 4
SDI_1 / SDATA_OUT 1
SDI_2 / SDATA_IN 2
RXP 18
RXN 19
I2S
S/PDIF
I2C
SRC
ROM
DSP
AC`97
RAM
DDX
I2S
29 LEFT_A
30 LEFT_B
27 RIGHT_A
28 RIGHT_B
33 SLEFT_A
34 SLEFT_B
23 SRIGHT_A
24 SRIGHT_B
21 LFE_A
22 LFE_B
43 LRCKO
43 BICKO
43 SDO_1
43 SDO_2
43 SDO_3
RESET 7
PLL
PowerDown
35 EAPD
14
15
XTI
XTO
43
CKOUT
44
PWDN
March 2002
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
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