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VSS (Pin 24)
This is the ground pin for the digital logic of the chip.
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11.19. MC34063
11.19.1. Description
The MC34063A Series is a monolithic control circuit containing the primary functions required for DC to
DC converters. These devices consist of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This
series was specifically designed to be incorporated in Step Down and Step Up and Voltage Inverting
applications with a minimum number of external components.
11.19.2. Features
" Operation from 3.0 V to 40 V Input
" Low Standby Current
" Current Limiting
" Output Switch Current to 1.5 A
" Output Voltage Adjustable
" Frequency Operation to 100 kHz
" Precision 2% Reference
11.19.3. Pin connections
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11.20. MSP34X0G
MSP3400G
Multistandard Sound Processor Family
11.20.1. Introduction
The MSP 34x0G family of single-chip Multistandard Sound Processors covers the sound processing of all
analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound
processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a
single chip. Figure shows a simplified functional block diagram of the MSP 34x0G.
This new generation of TV sound processing ICs now includes versions for processing the multichannel
television sound (MTS) signal conforming to the standard recommended by the Broadcast Television
Systems Committee (BTSC). The DBX noise reduction, or alternatively, MICRONAS Noise Reduction
(MNR) is performed alignment free. Other processed standards are the Japanese FM-FM multiplex
standard (EIA-J) and the FM Stereo Radio standard. Current ICs have to perform adjustment procedures
in order to achieve good stereo separation for BTSC and EIA-J. The MSP 34x0G has optimum stereo
performance without any adjustments.
All MSP 34x0G versions are pin and software downward compatible to the MSP 34x0D. The MSP 34x0G
further simplifies controlling software. Standard selection requires a single I²C transmission only.
The MSP 34x0G has built-in automatic functions: The IC is able to detect the actual sound standard
automatically (Automatic Standard Detection). Furthermore, pilot levels and identification signals can be
evaluated internally with subsequent switching between mono/stereo/bilingual; no I²C interaction is
necessary (Automatic Sound Selection).
Source Select
I2S bus interface consists of five pins:
1. I2S_DA_IN1, I2S_DA_IN2: For input, four channels (two channels per line, 2*16 bits) per sampling cycle
(32 kHz) are transmitted.
2. I2S_DA_OUT: For output, two channels (2*16 bits) per sampling cycle (32 kHz) are transmitted.
3. I2S_CL: Gives the timing for the transmission of I2S serial data (1.024 MHz).
4. I2S_WS: The I2S_WS word strobe line defines the left and right sample.
11.20.2. Features
" Standard Selection with single I2C transmission
" Automatic Standard Detection of terrestrial TV standards
" Automatic Sound Selection (mono/stereo/bilingual), new registers MODUS, STATUS
" Two selectable sound IF (SIF) inputs
" Automatic Carrier Mute function
" Interrupt output programmable (indicating status change)
" Loudspeaker / Headphone channel with volume, balance, bass, treble, loudness
" AVC: Automatic Volume Correction
" Subwoofer output with programmable low-pass and complementary high-pass filter
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" 5-band graphic equalizer for loudspeaker channel
" Spatial effect for loudspeaker channel
" Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs
" Complete SCART in/out switching matrix
" Two I2S inputs; one I2S output
" Dolby Pro Logic with DPL 351xA coprocessor
" All analog FM-Stereo A2 and satellite standards; AM-SECAM L standard
" Simultaneous demodulation of (very) high-deviation FM-Mono and NICAM
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