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CS61581 Datasheet(PDF) 2 Page - Cirrus Logic

Part No. CS61581
Description  T1/E1 Universal Line Interface
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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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




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