78P2351

Single Channel

OC-3/ STM1-E/ E4 LIU

Page: 2 of 42

Rev. 2.4

TABLE OF CONTENTS .................................................................................................2

FUNCTIONAL DESCRIPTION........................................................................................4

MODE SELECTION................................................................................................................................4

REFERENCE CLOCK ............................................................................................................................4

RECEIVER OPERATION .......................................................................................................................4

Receiver Monitor Mode ..................................................................................................................4

Receive Loss of Signal ..................................................................................................................5

Receive Loss of Lock.....................................................................................................................5

TRANSMITTER OPERATION................................................................................................................5

Synchronous (Re-timing) Tx Serial Modes ..................................................................................5

Plesiochronous Tx Serial Modes ..................................................................................................6

Synchronous Parallel Modes ........................................................................................................6

Transmit FIFO Description ............................................................................................................6

Transmit Driver ...............................................................................................................................7

Transmit Monitor Mode..................................................................................................................7

Clock Synthesizer...........................................................................................................................7

Transmit Backplane Equalizer ......................................................................................................7

Transmit Loss of Lock ...................................................................................................................7

POWER-DOWN FUNCTION .................................................................................................................7

LOOPBACK MODES .............................................................................................................................8

POWER-ON RESET ..............................................................................................................................8

SERIAL CONTROL INTERFACE .........................................................................................................9

PROGRAMMABLE INTERRUPTS ........................................................................................................9

REGISTER DESCRIPTION........................................................................................... 10

REGISTER ADDRESSING...................................................................................................................10

REGISTER TABLE...............................................................................................................................10

LEGEND ...............................................................................................................................................11

GLOBAL REGISTERS .........................................................................................................................11

ADDRESS 0-0: MASTER CONTROL REGISTER .......................................................................11

ADDRESS 0-1: INTERRUPT CONTROL REGISTER..................................................................12

ADDRESS 0-2: I/O CONTROL REGISTER .................................................................................12

PORT-SPECIFIC REGISTERS ............................................................................................................13

ADDRESS 1-0: MODE CONTROL REGISTER ...........................................................................13

ADDRESS 1-1: SIGNAL CONTROL REGISTER.........................................................................14

ADDRESS 1-2: ADVANCED TX CONTROL REGISTER 1 .........................................................15

ADDRESS 1-3: ADVANCED TX CONTROL REGISTER 0 .........................................................15

ADDRESS 1-4: MODE CONTROL REGISTER 2 ........................................................................15

ADDRESS 1-5: STATUS MONITOR REGISTER.........................................................................16