LG ACC75T Service Manual

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STA328
May 2006
1 FEATURES
■ Wide supply voltage range (10-36V)
■ 3 Power Output Configurations
– 2x40W + 1x80W
– 2x80W
– 1x160W
■ Power SO-36 Package
■ 2.1 Channels of 24-Bit DDX®
■ 100dB SNR and Dynamic Range
■ 32kHz to 192kHz Input Sample Rates
■ Digital Gain/Attenuation +48dB to -80dB in
0.5dB steps
■ 428-bit User Programmable Biquads (EQ) per
Channel
■ I
2
C Control
■ 2-Channel I
2
S Input Data Interface
■ Individual Channel and Master Gain/
Attenuation
■ Individual Channel and Master Soft and Hard
Mute
■ Individual Channel Volume and EQ Bypass
■ Bass/Treble Tone Control
■ Dual Independent Programmable Limiters/
Compressors
■ Automodes™
– 32 Preset EQ Curves
– 15 Preset Crossover Settings
– Auto Volume Controlled Loudness
– 3 Preset Volume Curves
– 2 Preset Anti-Clipping Modes
– Preset Nighttime Listening Mode
– Preset TV AGC
■ Input and Output Channel Mapping
■ AM Noise Reduction and PWM Frequency
Shifting Modes
■ Soft Volume Update and Muting
■ Auto Zero Detect and Invalid Input Detect
Muting Selectable DDX® Ternary or Binary
PWM output + Variable PWM Speeds
■ Selectable De-emphasis
■ Post-EQ User Programmable Mix with default
2.1 Bass Management settings
■ Variable Max Power Correction for lower full-
power THD
■ 4 Output Routing Configurations
■ Selectable Clock Input Ratio
■ 96kHz Internal Processing Sample Rate, 24 to
28-bit precision
■ QXpander
■ Video Application: 576 fs input mode suporting
2 DESCRIPTION
The STA328 is an integrated solution of digital au-
dio processing, digital amplifier control, and DDX-
Power Output Stage, thereby creating a high-pow-
er single-chip DDX® solution comprising of high-
quality, high-efficiency, all digital amplification.
The STA328 power section consists of four inde-
pendent half-bridges. These can be configured via
digital control to operate in different modes. 2.1
channels can be provided by two half-bridges and
a single full-bridge, providing up to 2x40W +
1x80W of power output. 2 Channels can be provid-
ed by two full-bridges, providing up to 2x80W of
power. The IC can also be configured as a single
paralelled full-bridge capable of high-current oper-
ation and 1x160W output.
Also provided in the STA328 are a full assortment
of digital processing features. This includes up to
4 programmable 28-bit biquads (EQ) per channel,
2.1 HIGH EFFICIENCY
DIGITAL AUDIO SYSTEM
Rev. 3
Fi
gure 1.
P
ac
k
age
Table 1. Order Codes
Part Number Package
STA328 PowerSO36 (Slug Up)
STA32813TR Tape & Reel
PowerSO36 SLUG UP

LG ACC75T Specifications

General

Brand	LG
Model	ACC75T
Category	Receiver
Language	English