TDA7500A datasheet(4/40 Pages) STMICROELECTRONICS

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TDA7500A

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CLKIN

Clock Input pin (Input). Clock from external digital audio source

to synchronize the internal PLL.

AVDD

Supply pin dedicated to the PLL.

XTI

Crystal Oscillator Input (Input). External Clock Input or crystal

Oscillator input.

XTO

Crystal Oscillator Output (Output). Crystal Oscillator output

drive.

AGND

Ground pin dedicated to the PLL.

RDSINT/DSP1_GPIO4

RDS bit/block interrupt (Output)/General Purpose I/O (Input/

Output). Provides an interrupt to the main micro. Optionally it

can be used as general purpose I/O controlled by DSP1.

RDSARI_SCK/DSP1_GPIO3

SPI Bit Clock (Input)/ARI indicator (Output)/General Purpose I/O

(Input/Output). If SPI interface is enabled, behaves as SPI bit

clock. Optionally it provides the ARI indication bit. Optionally it

can be used as general purpose I/O controlled by DSP1.

RDSQAL_SO/DSP1_GPIO2

SPI Slave Output Serial Data (Output)/RDS Bit Quality (Output)/

General Purpose I/O (Input/Output). If SPI is enabled, behaves

as Serial Data Output. Optionally it provides the RDS serial data

quality information. Optionally it can be used as general purpose

I/O controlled by DSP1.

RDSDAT_SI/DSP1_GPIO1

SPI Slave Input Serial Data (Input)/RDS Bit Data (Output)/

General Purpose I/O (Input/Output). If SPI is enabled, behaves

as Serial Data Input. Optionally it provides the RDS serial data

stream. Optionally it can be used as general purpose I/O

controlled by DSP1.

RDSCLK_SS/DSP1_GPIO0

SPI Chip Select (Input)/RDS Bit Clock (Output)/General

Purpose I/O (Input/Output). If SPI is enabled, behaves as Chip

Select line for SPI bus. Optionally it provides the 1187.5Hz RDS

Bit Clock. Optionally it can be used as general purpose I/O

controlled by DSP1.

INT

External interrupt line (Input). When this line is asserted low, the

DSP may be interrupted. Acts as IRQA line of DSP0 core.

CGND1

Ground pin dedicated to the digital circuitry.

CVDD1

Supply pin dedicated to the digital circuitry.

SCRCCD

SPDIF Input 1 (Input). Stereo SPDIF input to connect a digital

audio source like a CD.

SCRMD

SPDIF Input 2 (Input). Stereo SPDIF input to connect a digital

audio source like a MD.

DSRA<7>

I/O

DSP SRAM Data Lines<7> (Input/Output). When in SRAM

Mode this pin act as the EMI data line 7.

DSRA<6>

I/O

DSP SRAM Data Lines<6> (Input/Output). When in SRAM

Mode this pin act as the EMI data line 6.

N°

Name

Type

Description

PIN DESCRIPTION (continued)

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