STA020DJ STMicroelectronics

STA020 96kHz DIGITAL AUDIO INTERFACE TRANSMITTER MONOLITHIC DIGITAL AUDIO INTERFACE TRANSMITTER 3.3V SUPPLY VOLTAGE SUPPORTS: AES/EBU, IEC 958, S/PDIF, & EIAJ CP-340 Professional and Consumer Formats SO24 ORDERING NUMBER: STA020D PARITY BITS AND CRC CODES GENERATED TRANSPARENT MODE ALLOWS DIRECT CONNECTION OF STA020D AND STA120 DESCRIPTION The STA020D is a monolithic CMOS device which encodes and transmits audio data according to the AES/EBU, IEC 958, S/PDIF, & EIAJ CP-340 inter- face standards. It supports 96kHz sample rate op- eration ble of supporting a wide variety of formats. The STA020D accepts audio and digital data The STA020D multiplexes the channel, user, and which is then multiplexed, encoded and driven validity data directly from serial input pins with onto a cable. dedicated input pins for the most important chan- nel status bits. The audio serial port is double buffered and capa- BLOCK DIAGRAM M0 M1 M2 VD+ GND MCK RST 23 22 21 5 16 19 18 6 SCK 7 AUDIO FSYNC SERIAL PORT 8 20 SDATA TXP MUX DIFFERENTIAL 17 TXN 10 C 11 REGISTERS U 9 7 V 15 24 D97AU599A DEDICATED CHANNEL CBL TRNPT STATUS BUS April 2010 1/14 Obsolete Product(s) - Obsolete Product(s) STA020 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V DC Power Supply 4 V D+ V Digital Input Voltage -0.3 to V 0.3 V IND D+ T Ambient Operating Temperature (power applied) -20 to +85 C amb T Storage Temperature -40 to 150 C stg RECOMMENDED OPERATING CONDITIONS (GND = 0V all voltages with respect to ground) Symbol Parameter Test Condition Min. Typ. Max. Unit V DC Voltage 3 3.3 3.6 V D+ T Ambient Operating Temp. 0 25 70 C amb PIN CONNECTIONS (Top view) C7/C3 1 24 TRNPT/FC1 PRO 2 23 M0 C1/FC0 3 22 M1 C6/C2 4 21 M2 MCK 5 20 TXP SCK 6 19 VD+ FSYNC 7 18 GND SDATA 8 17 TXN V 9 16 RST C/SBF 10 15 CBL/SBC U 11 14 EM0/C9 C9/C15 12 13 EM1/C8 D97AU608A PIN DESCRIPTION N Pin Function Power Supply Connections 18 GND Ground. 19 VD+ Positive Digital Power. Nominally +3.3V. Audio Input Interface 6 SCK Serial Clock. Serial clock for SDATA pin which can be configured (via the M0, M1 and M2 pins) as an input or output and can sample data on the rising or falling edge.As an output, SCK will contain 32 clocks for every audio sample. 2/14 Obsolete Product(s) - Obsolete Product(s)