TDA7590_09 Datasheet, PDF (20/42 Pages) STMicroelectronics – Digital signal processing IC for speech and audio applications

DSP peripherals
TDA7590
The key features of the host interface are:
● 8 bit parallel port "Full-duplex" dedicated host register bank
● Dedicated Mozart™ core DSP register core bank.
● Register banks map directly into Mozart X memory space
● 3 transfer modes:
– host command
– Host to Mozart core DSP
– Mozart core DSP to host
● Access protocols:
– Software polled
– Interrupt
– DMA access by the Mozart core DSP core
● 2+ wait states clock cycles per transfer
● Supported instructions:
– Data transfer between Mozart core and external host using Mozart MOVE
instruction
– Simple I/O service routine with bit addressing instructions
– IO service using fast interrupts with MOVEP instructions.
7.5
ESSI
The ESSI peripheral enables serial-port communication between the DSP core and external
devices including Codecs, DSP, microprocessors. The ESSI is capable of driving 12
programmable external pins which can be configured as GPIO ports C and D or ESSI pins.
The key features of the ESSI are:
● Independent receiver and transmitter
● Synchronous or asynchronous channel modes synchronous. Receiver and transmitter
use same clock/sync asynchronous. Receiver and transmitter may use separate
clock/sync up to one transmitter enabled in asynchronous channel mode.
● Up to three transmitters enabled in synchronous channel mode.
● Normal mode. One word per period.
● Network mode. Up to 32 words per period.
7.6
EOC
The Salieri extended on-chip memory interface provides access to 40 kB of on-chip
memory. The Mozart core will treat this memory as if it were external. Access by off-chip
expansion bus masters is permitted. All accesses to the extended on-chip RAM are
controlled by the extended on-chip memory control register. This register determines which
combinations of the Address attribute pins should be interpreted as accesses to the 40 kB of
RAM.
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