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TDA7502STN/a11595avaiIN-CAR REMOTE AMPLIFIER DSP


TDA7502 ,IN-CAR REMOTE AMPLIFIER DSPTDA7502IN-CAR REMOTE AMPLIFIER DSP■ 24-Bit FIXED-POINT DSP CORE DELIVERING UP TO 50 MIPS■ 2 x 1024 ..
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TDA7502
IN-CAR REMOTE AMPLIFIER DSP
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TDA7502

May 2002 24-Bit FIXED-POINT DSP CORE DELIVERING
UP TO 50 MIPS 2 x 1024 x 24 Bit OF RAM FOR X AND Y DATA
MEMORY. 3072 x 24 Bit OF RAM FOR PROGRAM ALSO
USABLE FOR DELAY SERIAL AUDIO INTERFACE. DEBUG PORT. CONTROL INTERFACE FOR EXTERNAL
GPIOs, INTERRUPTS, AND RESET. SPI AND I2 C FOR COMMUNICATION
BETWEEN EXTERNAL MICRO AND DSP.
BOTH MASTER AND SLAVE OPERATING
MODES. PLL CLOCK OSCILLATOR 5V-TOLERANT 3.3V I/O INTERFACE
DESCRIPTION

This device is a high-performance, fully programma-
ble DSP, suitable for a wide range of applications and
particularly for Audio and Sound Processing. It con-
tains a 24-bit 50 MIPS DSP core, several interfaces
for control and data, plus a configurable PLL.
The computational power and the memory configura-
tion make this device particularly suitable for in car
equalisation. This device will offer the best trade-off
between performance and cost when coupled with
the TDA7535, or other devices of the same family. A
library of sound processing functions is available for
this device; some of these functions are: parametric
equaliser, cross over filters, acoustic delay, dynamic
compression, Vol/Bass/Treble/Fader, active equali-
sation, Stereo Spatial Enhancement and more.
IN-CAR REMOTE AMPLIFIER DSP
BLOCK DIAGRAM
TDA7502
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ABSOLUTE MAXIMUM RATINGS

(*) When the IC is powered.
Warning: Operation at or beyond these limit may result in permanent damage to the device. Normal operation is not guaranteed at these
extremes.
PIN CONNECTION (Top view)
THERMAL DATA

(*) In still air.
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TDA7502
PIN DESCRIPTION
TDA7502
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Notes:1. XTI and XTO are not 5V tolerant
PIN DESCRIPTION (continued)
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TDA7502
RECOMMENDED DC OPERATING CONDITIONS
POWER CONSUMPTION

Note: 50MHz internal DSP clock
PLL CHARACTERISTICS

Note: 1. Depending on VCO output frequency.
2. Fdsp = Fvco/2 when PLL is running
OSCILLATOR CHARACTERISTICS
GENERAL INTERFACE ELECTRICAL CHARACTERISTICS

Note:1. The leakage currents are generally very small, <1nA. The value given here, 1mA, ia amaximum that can occur after an Electrostatic
Stress on the pin. Human Body Model.
LOW VOLTAGE TTL INTERFACE DC ELECTRICAL CHARACTERISTICS
TDA7502
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Note:1. TTL specifications only apply to the supply voltage range Vdd = 3.0V to 3.6V Takes into account 200mV voltage drop in both supply lines. X is the source/sink current under worst case conditions and is reflected in the name of the I/O cell according to the drive capability.
DSP CORE
MAXIMUM DSP CLOCK FREQUENCY (Fdsp) VERSUS JUNCTION TEMPERATURE (Tj)
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TDA7502
SAI INTERFACE
Figure 1. SAI Timings

Note TDSP = dsp master clock cycle time = 1/FDSP
Figure 2. SAI protocol when RLRS=0; RREL=0; RCKP=1; RDIR=0
TDA7502
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Figure 3. SAI protocol when RLRS=1; RREL=0; RCKP=1; RDIR=1.
Figure 4. SAI protocol when RLRS=0; RREL=0; RCKP=0; RDIR=0.
Figure 5. SAI protocol when RLRS=0; RREL=1; RCKP=1; RDIR=0.

Note: some timing is used for transmitter and receiver
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TDA7502
SPI INTERFACES
Figure 6. SPI Clocking scheme.
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