Daewoo DTX-21G2 Service Manual

CP-520V Service Manual405.2.11 I2C-BUS USER INTERFACE DESCRIPTIONThe UOC III series is fully controlled via the I2C-bus. Control is exercised by writing data to oneor more internal registers. Status information can be read from a set of info registers to enablethe controlling microcontroller determine whether any action is required. The device has an I2C-bus slave transceiver, in accordance with the fast-mode specification, with a maximum speed of400 kbits/s. Information concerning the I2C-bus can be found in brochure “I2C-bus and how touse it” (order number 939839340011). To avoid conflicts in a real application with other ICsproviding similar or complementary functions, there are two possible slave addresses availablewhich can be selected by the SVM pin(pin 65).Possible slave addressSVM PIN SLAVE ADDRESS A6 TO A0Scavem application 1 0 0 0 1 0 1Tied 5 volts 1 0 0 0 1 1 1The device will not respond to a ‘generalcall’ on the I2C-bus, i.e. when a slave address of0000000 is sent by a master.Write registersEach address of the address space (see below) can only be written.Correct operation is not guaranteed if registers in the range $FB to $FF will be addressed!Read registersThe output registers of the TV processor are only available via auto-increment mode, no addresscan be used and all registers must be read.5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSORThe TV Sound Processor is a digital TV sound processor for analog multi-channel soundsystems in TV sets. It is based on a 24 bit DSP and designed to support several applications.A new easy-to-use control concept was implemented for easiest configuration programming ofthe very complex functionality of the TV Sound Processor. Pre-defined setups are available forall implemented sound processing modes. Aloud speaker switching concept allows it to adapt thepre-defined setups to the specific loudspeaker application.The built-in intelligence for pre-definedstandards and Auto Standard Detection (ASD) allows an easy setup of the demodulator anddecoder part.The control concept for the audio processor is based on the following new features:n Pre-defined setups for the sound processing modes like Dolby® Pro Logic® and VirtualDolby® Surround (422, 423)n Flexible configuration of audio outputs to the loudspeaker configuration with an additionaloutput crossbarn Master volume functionThe control concept for the demodulator and decoder (DEMDEC) is based on the following newfeatures:n Easy demodulator setup for all implemented standards with Demodulator and Decoder EasyProgramming (DDEP) for a pre-selected standard or combined with Auto Standard Detection(ASD) for automatic detection of a transmitted standard