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CP-520/520A/520F Service Manual
DTV R&D Europe
42
5.2.11 I2C-BUS USER INTERFACE DESCRIPTION
The UOC III series is fully controlled via the I2C-bus. Control is exercised by writing data to one
or more internal registers. Status information can be read from a set of info registers to enable
the 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 of
400 kbits/s. Information concerning the I2C-bus can be found in brochure “I2C-bus and how to
use it” (order number 939839340011). To avoid conflicts in a real application with other ICs
providing similar or complementary functions, there are two possible slave addresses available
which can be selected by the SVM pin(pin 65).
Possible slave address
SVM PIN SLAVE ADDRESS A6 TO A0
Scavem application 1 0 0 0 1 0 1
Tied 5 volts 1 0 0 0 1 1 1
The device will not respond to a ‘generalcall’ on the I2C-bus, i.e. when a slave address of
0000000 is sent by a master.
Write registers
Each 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 registers
The output registers of the TV processor are only available via auto-increment mode, no address
can be used and all registers must be read.
5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR
The TV Sound Processor is a digital TV sound processor for analog multi-channel sound
systems 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 of
the very complex functionality of the TV Sound Processor. Pre-defined setups are available for
all implemented sound processing modes. Aloud speaker switching concept allows it to adapt the
pre-defined setups to the specific loudspeaker application.The built-in intelligence for pre-defined
standards and Auto Standard Detection (ASD) allows an easy setup of the demodulator and
decoder 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 Virtual
Dolby® Surround (422, 423)
n Flexible configuration of audio outputs to the loudspeaker configuration with an additional
output crossbar
n Master volume function
The control concept for the demodulator and decoder (DEMDEC) is based on the following new
features:
n Easy demodulator setup for all implemented standards with Demodulator and Decoder Easy
Programming (DDEP) for a pre-selected standard or combined with Auto Standard Detection
(ASD) for automatic detection of a transmitted standard