TDA7502_06 Datasheet, PDF (17/25 Pages) STMicroelectronics – In-car remote amplifier DSP

TDA7502
6
Functional description
Functional description
The TDA7502 contains one DSP core and associated peripherals.
6.1
24-BIT DSP core.
The DSP core is used to process the converted analog audio data coming from the CODEC
chip via the SAI and return it for analog conversion. Functions such as volume, tone,
balance, and fader control, as well as spatial enhancement and general purpose signal
processing may be performed by the DSP.
Some capabilities of the DSPs are listed below:
Single cycle multiply and accumulate with convergent rounding and condition code
generation
● 2 x 56-bit accumulators.
● Double precision multiply.
● Scaling and saturation arithmetic.
● 48-bit or 2 x 24-bit parallel moves.
● 64 interrupt vector locations.
● Fast or long interrupts possible.
● Programmable interrupt priorities and masking.
● 8 each of address registers, address offset registers and address modulo registers.
● linear, reverse carry, multiple buffer modulo, multiple wrap-around modulo address
arithmetic.
● Post-increment or decrement by 1 or by offset, index by offset, predecrement address.
● Repeat instruction and zero overhead DO loops.
● Hardware stack capable of nesting combinations of 7 DO loops or 15
interrupts/subroutines.
● Bit manipulation instructions possible on all registers and memory locations. Also jump
on bit test..
● 4 pin serial debug interface.
● Debug access to all internal registers, buses and memory locations.
● 5 word deep program address history FIFO.
● Hardware and software breakpoints for both program and data memory accesses.
● Debug single stepping, Instruction injection and disassembly of program memory.
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