SAA7274T datasheet(4/16 Pages) PHILIPS

Part #	SAA7274T

Description	Audio Digital Input Circuit ADIC

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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4 / 16 page

July 1991

4

Philips Semiconductors

Product speciﬁcation

Audio Digital Input Circuit (ADIC)

SAA7274

PINNING

Power supply

VDD

positive supply voltage (5 V)

VSS

ground (0 V)

Inputs (CMOS protection)

IBIFA

biphase input signal (min. 1 MHz;

max. 3.1 MHz)

IFDEN

frequency detector enable

IPHEN

phase-locked loop edge selector

ITEST1 test input enable

ITEST2 test input enable

IDACL

data clock input signal (max. 5 MHz)

IWSEL

word select input signal (max. 50 kHz)

IDOEN

output enable

IOSCL

clock oscillator input (min. 8 MHz;

max. 12.5 MHz)

Outputs (CMOS push-pull)

OCDB

control data bits (max. 400 kHz)

OLOC

out-of-lock signal

OREF

phase reference signal (max. 6.2 MHz)

OPHA

phase output signal (max. 6.2 MHz)

OPRE

pre-emphasis level

OSCU

user clock/copy-bit signal (max. 3.1 MHz)

OSDU

user data/pre-emphasis (max. 3.1 MHz)

OSCL

system clock output (min. 8 MHz;

max. 12.5 MHz)

OOSC

clock oscillator output (min. 8 MHz;

max. 12.5 MHz)

Outputs (3-state push-pull)

OBSY

block synchronization output signal

(1/49152 system clock)

OWSY

word clock output signal (1/256 system clock)

ODCL

data clock output signal (1/4 system clock)

OSDA

data output signal (max. 2.5 MHz)

Fig.2 Pinning diagram.

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