CS61581

2

DS211PP8

T A B L E OF C ONT E NT S

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

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

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

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

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

T1 SWITCHING CHARACTERISTICS ...............................................................7

E1 SWITCHING CHARACTERISTICS...............................................................7

SWITCHING CHARACTERISTICS ....................................................................9

2. THEORY OF OPERATION ...............................................................................................10

2.1 Operating Mode Selection ........................................................................10

2.2 Master Clocks ...........................................................................................10

2.3 Transmitter ................................................................................................10

2.4 Transmit All Ones Select ..........................................................................12

2.4.1 Receiver ..........................................................................................13

2.4.2 Short Haul .......................................................................................13

2.4.3 Long Haul ........................................................................................13

2.4.4 Clock Recovery ...............................................................................13

2.4.5 Jitter Tolerance ...............................................................................14

2.5 Receiver Line Attenuation Indication ........................................................14

2.6 Jitter Attenuator ........................................................................................14

2.7 Receiver Loss of Signal ............................................................................14

2.8 Local Loopback ........................................................................................15

2.9 Remote Loopback .....................................................................................16

2.10 Network Loopback ..................................................................................16

2.11 Alarm Indication Signal ...........................................................................16

2.12 Serial Interface .......................................................................................16

2.21 Interrupts ................................................................................................23

3. QRSS TEST MODE ..........................................................................................................23

4. ARBITRARY WAVEFORM GENERATION ......................................................................24

4.1 Power On Reset / Reset ...........................................................................25

4.2 Power Supply ............................................................................................26

6. PIN DESCRIPTION ...........................................................................................................31

6.1 Power Supplies .........................................................................................32

6.2 Oscillator ...................................................................................................32

6.3 Control ......................................................................................................32

6.4 Status .......................................................................................................33

6.5 Serial Control Interface .............................................................................33

6.6 Data Input/Output .....................................................................................34

7. PACKAGE DIMENSIONS ................................................................................................36

CS61581

2

DS211F1