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PDF ( 数据手册 , 数据表 ) STA321

零件编号 STA321
描述 4-channel digital audio system
制造商 STMicroelectronics
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STA321 数据手册, 描述, 功能
STA321
4-channel digital audio system with FFX™ driver
Features
„ High efficiency FFX™ class-D modulator
„ 100-dB dynamic range
„ Two stereo channels with I2S input/output data
interface
„ 16-bit stereo ADC input with PGA and
microphone biasing
„ Analog and digital muxing/mixing capability
„ 4-channel input sample rate converter
(8 kHz to 192 kHz)
„ Four channels of 24-bit audio processing
„ Flexible channel mapping and routing
„ Output configurations:
– 2.0
– 2.1
– 4.0
– Mono
„ Embedded CMOS bridge: up to 0.5 W/channel
„ pfStart™ for pop-free single-ended operations
„ Play and record simultaneous operation
„ Pre and post mix stages
„ Individual channel and master gain/attenuation
LQFP-64 package
with exposed pad down (EPD)
„ Digital gain/attenuation -105 dB to +36 dB in
0.5-dB steps
„ Soft volume update and muting
„ DC-blocking selectable high-pass filter
„ Selectable de-emphasis filter
„ Up to 13 28-bit user programmable biquads
(EQ) per channel
„ Bass/treble tone control
„ Ternary, binary or phase shift modulation
„ PWM output
„ Headphone output with jack detector
„ I2C control.
Table 1. Device summary
Order code
Temperature range
STA321
0 to 70 °C
STA321TR
0 to 70 °C
Package
LQFP-64 EPD
LQFP-64 EPD
Packaging
Tray
Tape and reel
October 2009
Doc ID 15351 Rev 3
1/157
www.st.com
1







STA321 pdf, 数据表
List of figures
STA321
Figure 49.
Figure 50.
Figure 51.
Figure 52.
Figure 53.
Figure 54.
Figure 55.
Figure 56.
PCM (delayed) serial format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Invalid input detection schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Headphone detection circuit for single-ended configuration . . . . . . . . . . . . . . . . . . . . . . . 73
Headphone detection circuit for binary HP configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 73
I2C write operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
I2C read operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Microless mode block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
LQFP-64L EPD outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
8/157
Doc ID 15351 Rev 3







STA321 equivalent, schematic
Electrical specifications
STA321
Table 6. Electrical specifications (continued)
Symbol
Parameter
Test conditions
Min Typ Max Unit
ADC
IDDA
ISTDBYA
DR
SNRADC
THDADC
CT
Supply current in operating mode
AVDD supply current in standby
Dynamic range
Signal to noise ratio
Total harmonic distortion
Channel cross talk
- Group delay
- Pass band
- Pass band ripple
- Stop band attenuation
- Frequency response
- Linear phase deviation
- Pass-band ripple
Headphone detector threshold limits
E_HP1
HP low threshold
HP high threshold
E_HP2
HP low threshold
HP high threshold
VAVDD = 3.3V
-
VAVDD = 3.3V
-
1 kHz, A-weigthed
VAVDD = 3.3 V
-
1 kHz, A-weighted
VAVDD = 3.3 V
-
1 kHz, -1dB
VAVDD = 3.3 V
-
VAVDD = 3.3 V
-
Fs mode (fS = 32 kHz)
-
Fs_by_2 mode (fS = 16 kHz) -
Fs_by_4 mode (fS = 8 kHz) -
--
Fs mode (fS = 44.1 kHz)
Fs_by_2 mode
(fS = 22.05 kHz)
Fs_by_4 mode
(fS = 11.025 kHz)
Fs mode (fS = 44.1 kHz)
Fs_by_2 mode
(fS = 22.05 kHz)
Fs_by_4 mode
(fS = 11.025 kHz)
-3 dB
-
-
-
-
-
-
-
-0.08 dB
-
at 20 Hz
-
--
--
--
--
--
10 15
2-
90 -
92 -
85 -
80 -
0.4 -
0.7 -
1.4 -
0.4535 -
0.08 -
0.08 -
0.08 -
45 -
45 -
45 -
7
50
19.35
0.08
-
-
-
-
mA
µA
dB
dB
dB
dB
ms
Fs
dB
dB
Hz
Hz
deg
dB
2.34 -
2.52 -
0.7 -
0.9 -
V
V
16/157
Doc ID 15351 Rev 3










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