E-TDA7590 STMicroelectronics, E-TDA7590 Datasheet - Page 21

• Manufacturer Part Number: E-TDA7590
• Description: IC DSP SPEECH/AUDIO 144-TQFP
• Manufacturer: STMicroelectronics
• Type: Signalr

Specifications of E-TDA7590

• Applications: Speech Recognition
• Mounting Type: Surface Mount
• Package / Case: 144-TQFP Exposed Pad, 144-eTQFP, 144-HTQFP, 144-VQFP
• Device Core Size: 24b
• Format: Fixed Point
• Clock Freq (max): 120MHz
• Mips: 120
• Device Input Clock Speed: 120MHz
• Ram Size: 384KB
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Supply Voltage (min): 1.62/3V
• Operating Supply Voltage (max): 1.98/3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 144
• Package Type: TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7590
7.7
7.8
7.9
Timers and watchdog block
The timers and watchdog block consists of a common 21-bit prescaler and three
independent and identical general-purpose 24-bit timer/event counters, each with its own
register set.
Each timer has the following capabilities:
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When TIO is configured as an
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PLL
The PLL generates the following clocks:
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CODEC cell
The main features of the CODEC cell are listed below:
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The analog interface is in the form of differential signals for each channel. The interface on
the digital side has the form of an SAI interface and can interface directly to an SAI channel
and then to the DSP core.
DCLK can be supplied either by the internal PLL or by external, to allow synchronization
with external anal digital sources.
Uses internal or external clocking.
Interrupts the Mozart after a specified number of events (clocks).
Signals an external device after counting internal events.
Triggers DMA transfers after a specified number of events (clocks) occurs.
Connects to the external world through designated pins TIO[0-2] for timers 0-2.
Input: timer functions as an external event counter. Timer measures external pulse
width/signal period.
Output: timer functions as a:
–
–
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DCLK: DSP core clock
DACLK: ADC and DAC clock
LRCLK: left/right clock for the SAI and the CODEC
SCLK: shift serial clock for the SAI and the CODEC
20 bits stereo DAC, and 18 bits ADC
I
Oversampling ratio: 512
Sampling rates of 8 kHz to 48 kHz
2
S format
Timer
Watchdog timer
Pulse-width modulator.
DSP peripherals
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