CS61318

2

DS441PP2

TABLE OF CONTENTS

1 CHARACTERISTICS AND SPECIFICATIONS ......................................................................... 4

ABSOLUTE MAXIMUM RATINGS ........................................................................................... 4

RECOMMENDED OPERATING CONDITIONS ....................................................................... 4

DIGITAL CHARACTERISTICS ................................................................................................. 4

ANALOG SPECIFICATIONS .................................................................................................... 5

E1 SWITCHING CHARACTERISTICS ..................................................................................... 6

SERIAL PORT SWITCHING CHARACTERISTICS.................................................................. 7

2 THEORY OF OPERATION ........................................................................................................ 8

2.1 Operating Modes ............................................................................................................... 8

2.2 Master Clocks .................................................................................................................... 8

2.3 Transmitter ......................................................................................................................... 8

2.4 Transmit All Ones Select ...................................................................................................9

2.4.1 Receiver ................................................................................................................ 9

2.4.2 Clock Recovery ..................................................................................................... 9

2.4.3 Jitter Tolerance ..................................................................................................... 9

2.4.4 Receiver Line Attenuation Indication ..................................................................... 9

2.5 Jitter Attenuator ................................................................................................................. 9

2.6 Receiver Loss of Signal ................................................................................................... 10

2.7 Local Loopback ................................................................................................................ 10

2.8 Remote Loopback ............................................................................................................11

2.9 Network Loopback ...........................................................................................................11

2.10 Alarm Indication Signal .................................................................................................. 11

2.11 Serial Interface ............................................................................................................... 11

2.11.1 Control Register 1: Address 0x10 ............................................................................... 13

2.11.2 Control Register 2: Address 0x11

............................................................................. 14

2.11.3 Equalizer Gain (EQGAIN): Address 0x12 ................................................................... 14

2.11.4 Arbitrary Waveform RAM Address (RAM): Address 0x13 .......................................... 14

2.12 Interrupts ........................................................................................................................ 15

2.13 Power On Reset / Reset ................................................................................................ 15

2.14 Power Supply ................................................................................................................. 15

3 ARBITRARY WAVEFORM GENERATION ............................................................................. 16

4 PIN DESCRIPTION .................................................................................................................. 19

4.1 Power Supplies ................................................................................................................ 20

4.2 Oscillator .......................................................................................................................... 20

4.3 Control ............................................................................................................................. 20

4.4 Status ............................................................................................................................... 21

4.5 Serial Control Interface .................................................................................................... 21

4.6 Data Input/Output ............................................................................................................ 22

5 PACKAGE DIMENSIONS ........................................................................................................ 24

6 APPLICATIONS ....................................................................................................................... 26

Contacting Cirrus Logic Support

For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:

http://www.cirrus.com/corporate/contacts/

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