TDA7500A Просмотр технического описания (PDF) - STMicroelectronics

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TDA7500A

DIGITAL AM/FM SIGNAL PROCESSOR

STMicroelectronics 

TDA7500A

PIN DESCRIPTION (continued)

N°

14 CLKIN

Name

15 AVDD

16 XTI

17 XTO

18 AGND

19 RDSINT/DSP1_GPIO4

20 RDSARI_SCK/DSP1_GPIO3

21 RDSQAL_SO/DSP1_GPIO2

22 RDSDAT_SI/DSP1_GPIO1

23 RDSCLK_SS/DSP1_GPIO0

24 INT

25 CGND1

26 CVDD1

27 SCRCCD

28 SCRMD

29 DSRA<7>

30 DSRA<6>

Type

Description

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

to synchronize the internal PLL.

Supply pin dedicated to the PLL.

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

Oscillator input.

O Crystal Oscillator Output (Output). Crystal Oscillator output

drive.

Ground pin dedicated to the PLL.

O 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.

O 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.

O 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.

I 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.

I 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.

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

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

Ground pin dedicated to the digital circuitry.

Supply pin dedicated to the digital circuitry.

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

audio source like a CD.

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

audio source like a MD.

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

Mode this pin act as the EMI data line 7.

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

Mode this pin act as the EMI data line 6.

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