TDA7502

Functional description

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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

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2 x 56-bit accumulators.

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Double precision multiply.

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Scaling and saturation arithmetic.

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48-bit or 2 x 24-bit parallel moves.

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64 interrupt vector locations.

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Fast or long interrupts possible.

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Programmable interrupt priorities and masking.

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8 each of address registers, address offset registers and address modulo registers.

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linear, reverse carry, multiple buffer modulo, multiple wrap-around modulo address

arithmetic.

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Post-increment or decrement by 1 or by offset, index by offset, predecrement address.

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Repeat instruction and zero overhead DO loops.

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Hardware stack capable of nesting combinations of 7 DO loops or 15

interrupts/subroutines.

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Bit manipulation instructions possible on all registers and memory locations. Also jump

on bit test..

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4 pin serial debug interface.

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Debug access to all internal registers, buses and memory locations.

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5 word deep program address history FIFO.

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Hardware and software breakpoints for both program and data memory accesses.

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Debug single stepping, Instruction injection and disassembly of program memory.