STA308HB-EVB STMicroelectronics, STA308HB-EVB Datasheet

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STA308HB-EVB

Manufacturer Part Number
STA308HB-EVB
Description
Audio Modules & Development Tools Eval Board STA308HB
Manufacturer
STMicroelectronics
Datasheet

Specifications of STA308HB-EVB

Description/function
Audio DSPs
Product
Audio Modules
For Use With/related Products
STA308
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
April 2010
MULTICHANNEL DIGITAL AUDIO PROCESSOR WITH DDX™
8 DDX
From 32kHz to 192kHz Input Sample Rates
Supported
Volume Control from 0 to -127 dB (0.5 dB steps)
Variable Digital Gain from 0 to 24dB (0.5dB
steps) with Digital Limiter Functionality and
Variable Attack and Release Time
I
Individual Channel and Master Gain/
Attenuation
Individual Channel Mute and Zero Input Detect
Auto-Mute
Selectable Serial Audio Data Interface
Bass/Treble Controls
Channel Mapping of any Input to any
Processing/DDX
Active Crossover Capability
DC Blocking Selectable High-Pass Filter
Selectable Bass Management on Channel 6
Selectable Adjacent Channel Mixing Capability
Selectable DDX
Channels 7 & 8
Selectable Clock Input Ratio
Selectable De-emphasis
Selectable DDX
output
AM Interference Reduction Mode
I
2
2
S Inputs and Outputs
C Control
TM
Channels Capability (24 bit)
TM
TM
TM
Headphone Output on
Ternary, or Binary PWM
Channel
DESCRIPTION
The STA308 is a single chip solution for digital audio
processing and control in multi-channel applications.
It provides output capabilities for DDX
tal Amplification). In conjunction with a DDX
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
channel and 192kHz, 24-bit DVD-Audio.
The internal 24-bit DSP allows for high resolution
processing at all standard input sample frequencies.
Processing includes volume control, filtering, bass
management, gain compression/limiting and PCM
and DDX
grammable 28-bit biquads for EQ per channel, as
well as bass, treble and DC blocking. External clock-
ing can be provided at 4 different ratios of the input
sample frequency. All sample frequencies are up-
sampled for processing. Each internal processing
channel can receive any input channel, allowing flex-
ibility and the ability to perform active digital cross-
over for powered loudspeaker systems.
The serial audio data interface accepts many differ-
ent formats, including the popular I
channels of DDX processing are performed.
TM
ORDERING NUMBER: STA308
outputs. Filtering includes five user-pro-
TQFP64
STA308
2
S format. Eight
TM
(Direct Digi-
TM
power
1/33

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STA308HB-EVB Summary of contents

Page 1

MULTICHANNEL DIGITAL AUDIO PROCESSOR WITH DDX™ 8 DDX TM Channels Capability (24 bit) From 32kHz to 192kHz Input Sample Rates Supported Volume Control from 0 to -127 dB (0.5 dB steps) Variable Digital Gain from 0 to 24dB (0.5dB steps) ...

Page 2

STA308 BLOCK DIAGRAM LRCKI BICKI SERIAL SDI12 DATA SDI34 IN SDI56 SDI78 CHANNEL MAPPING SYSTEM TIMING PLLB PLL XTI CKOUT Figure 1. Signal Flow Diagram Channels 1-8 1st Stage Interpolation Output 8 Inputs From I2S Channel Mapping 2/33 SA SCL ...

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IN CONNECTION (Top view) MVO GND VDD3 GND VDD SDI_78 SDI_56 SDI_34 SDI_12 LRCKI BICKI VDD3 GND VDD RESET PLLB PIN FUNCTION PIN NAME 1 MVO 3, 12, 24, 28, VDD3 35, 44, 52 13, 27, GND ...

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STA308 PIN FUNCTION (continued) PIN NAME 20 XTI 21 FILTER_PLL 22 VDDA 23 GNDA 25 CKOUT 29 OUT8_B 30 OUT8_A 31 OUT7_B 32 OUT7_A 33 OUT6_B 34 OUT6_A 38 OUT5_B 39 OUT5_A 40 OUT4_B 41 OUT4_A 42 OUT3_B 43 OUT3_A ...

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ABSOLUTE MAXIMUM RATINGS Symbol V 3.3V I/O Power Supply DD_3.3 V 2.5V Logic Power Supply DD_2.5 V Voltage on input pins i V Voltage on output pins o T Storage Temperature stg T Ambient Operating Temperature amb THERMAL DATA Symbol ...

Page 6

STA308 ELECTRICAL CHARACTERISTCS (V wise specified) GENERAL INTERFACE ELECTRICAL CHARACTERISTICS Symbol Parameter I Low Level Input no pull- High Level Input no pull-down ih I Tristate output leakage without OZ pullup/down V Electrostatic Protection esd Note 1: The ...

Page 7

PIN DESCRIPRTION 1.1 MVO: Master Volume Override This pin enables the user to bypass the Volume Control on all channels. When MVO is pulled High, the Master Volume Register is set to 00h, which corresponds to its Full Scale ...

Page 8

STA308 2.1 COMMUNICATION PROTOCOL 2.1.1 Data Transition or change Data changes on the SDA line must only occur when the SCL clock is low. SDA transition while the clock is high is used to identify a START or STOP condition. ...

Page 9

Write Mode Sequence BYTE DEV-ADDR WRITE START MULTIBYTE DEV-ADDR WRITE START Read Mode Sequence ACK CURRENT DEV-ADDR ADDRESS READ START RW ACK RANDOM DEV-ADDR ADDRESS READ START RW RW= ACK HIGH SEQUENTIAL DEV-ADDR CURRENT READ START ACK SEQUENTIAL DEV-ADDR RANDOM ...

Page 10

STA308 10h C8Vol C8V7 11h C12im 12h C34im 13h C56im 14h C78im 15h C1234ls C4LS1 16h C5678ls C8LS1 17h L1ar L1R3 18h L1atrt L1AT3 19h L2ar L2R3 1Ah L2atrt L2AT3 1Bh Tone TTC3 1Ch Cfaddr CFA7 1Dh B2cf1 C1B23 1Eh ...

Page 11

CONFIGURATION REGISTER A (ADDRESS 00H) BIT D7 D6 NAME MPC HPE RST 1 3.0.1 Master Clock Select BIT R/W RST R/W 0 The STA308 will support sample rates of 32kHz, 44.1kHz, 48Khz, ...

Page 12

STA308 3.0.3 Bass Management Enable BIT R/W RST NAME 5 R/W 0 BME Channel 6 of the STA308 features a bass management mode that enables redirection of information in all other channels to this channel and which can then be ...

Page 13

Serial Audio Input Interface Format BIT R/W RST R/W 0 The STA308 features a configurable digital serial audio interface. The settings of the SAIx bits determine how the input to this interface is ...

Page 14

STA308 3.1.3 Serial Audio Input Interface First Bit BIT R/W RST NAME 5 R/W 0 SAIFB 3.1.4 Zero-Crossing Volume Enable BIT R/W RST NAME 6 R/W 1 ZCE The ZCE bit enables zero-crossing volume adjustments. When volume is adjusted on ...

Page 15

High-Pass Filter Bypass BIT R/W RST 7 R/W 0 The STA308 features an internal digital high-pass filter for the purpose of AC coupling. The purpose of this filter is to prevent DC signals from passing through a DDX amplifier. ...

Page 16

STA308 3.3.4 Biquad Coefficient Link BIT R/W RST NAME 7 R/W 0 BQL For ease of use, all channels can use the biquad coefficients loaded into the Channel 1 Coefficient RAM space by setting the BQL bit to 1. Then ...

Page 17

Table 4. Interface format as a function of SAO bits. SAO(2..0) Interface Format 000 001 Left-Justified Data 010 Right-Justified 16-bit Data 011 Right-Justified 18-bit Data 100 Right-Justified 20-bit Data 101 Right-Justified 24-bit Data BIT R/W RST 6 ...

Page 18

STA308 3.7 Master Volume Register (address 07h) BIT D7 D6 NAME MV7 MV6 RST 1 3.8 Channels 1,2,3,4,5,6,7,8 Mute (address 08h) BIT D7 D6 NAME C8M C7M RST 0 3.9 Channel 1 Volume (address 09h) BIT D7 D6 NAME C1V7 ...

Page 19

Channel 6 Volume (address 0Eh) BIT D7 D6 NAME C6V7 C6V6 RST 0 3.15 Channel 7 Volume (address 0Fh) BIT D7 D6 NAME C7V7 C7V6 RST 0 3.16 Channel 8 Volume (address 10h) BIT D7 D6 NAME C8V7 C8V6 ...

Page 20

STA308 Channel Volume as a function of CxV(7..0) CxV(7..0) 00000000(00h) 00000001(01h) 00000010(02h) … 00101111(2Fh) 00110000(30h) 00110001(31h) … 11111110(FEh) 11111111(FFh) 3.17 Channel Input Mapping Channels 1 & 2 (address 11h) BIT D7 D6 NAME C2IM2 RST 3.18 Channel Input Mapping Channels ...

Page 21

Table 6. Channel Mapping as a function of CxIM bits 2 CxIM(2.. Input Mapped to: 000 Channel 1 001 Channel 2 010 Channel 3 011 Channel 4 100 Channel 5 101 Channel 6 110 Channel 7 111 Channel ...

Page 22

STA308 3.23 Limiter 1 Attack/Release Rate (address 17h) BIT D7 D6 NAME L1R3 L1R2 RST 1 3.24 Limiter 1 Attack/Release Threshold (address 18h) BIT D7 D6 NAME L1AT3 L1AT2 RST 0 3.25 Limiter 2 Attack/Release Rate (address 19h) BIT D7 ...

Page 23

The limiter attack thresholds are determined by the LxAT registers recommended in ...

Page 24

STA308 Table 9. Limiter Release Rate and Uncompression Threshold as a function of LxR bits LxR(3..0) 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Table 10. Limiter Attack Threshold as a function ...

Page 25

Table 11. Limiter Release Threshold as a function of LxRT bits LxRT(3..0) AC(dB relative to FS) 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 3.27 Bass and Treble Tone Control(address 1Bh) BIT ...

Page 26

STA308 3.28 Coefficient Address Register (address 1Ch) BIT D7 D6 NAME CFA7 CFA6 RST 0 3.29 Coefficient b2 Data Register Bits 23..16 (address 1Dh) BIT D7 D6 NAME C1B23 C1B22 RST 0 3.30 Coefficient b2 Data Register Bits 15..8 (address ...

Page 27

Coefficient a2 Data Register Bits 15..8 (address 24h) BIT D7 D6 NAME C3B15 C3B14 RST 0 3.37 Coefficient a2 Data Register Bits 7..0 (address 25h) BIT D7 D6 NAME C3B7 C3B6 RST 0 3.38 Coefficient a1 Data Register Bits ...

Page 28

STA308 3.44 Coefficient Write Control Register (address 2Ch) BIT D7 D6 NAME RST Coefficients for EQ and Bass Management are handled internally in the STA308 via RAM. Access to this RAM is available to the user via an I2C register ...

Page 29

When using this technique, the 8-bit address would specify the address of the biquad b2 coefficient (e. 10, 15, …, 50, … 195 decimal), ...

Page 30

STA308 Post-Scale The STA308 provides one additional multiplication after the last interpolation stage and before the distortion compensation on each channel. This is a 24-bit signed fractional multiply. The scale factor for this multiply is loaded into RAM using the ...

Page 31

DIM. MIN. TYP. MAX. MIN. A 1.60 A1 0.05 0.15 0.002 A2 1.35 1.40 1.45 0.053 B 0.17 0.22 0.27 0.0066 0.0086 0.0106 C 0.09 0.0035 D 11.80 12.00 12.20 0.464 D1 9.80 10.00 10.20 0.386 D3 7.50 e ...

Page 32

STA308 4.0 REVISION HISTORY Table 13. Revision History Date Revision April 2004 30-Apr-2010 32/33 2 Updates not recorded 3 Removed "Preliminary data" status from cover page Description of Changes ...

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... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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