DS21352L datasheet(3/137 Pages) DALLAS

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DS21352/DS21552

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10.

SIGNALING OPERATION..........................................................................................................58

10.1 PROCESSOR-BASED SIGNALING ....................................................................................58

10.2 HARDWARD-BASED SIGNALING ...................................................................................60

10.2.1 Receive Side.................................................................................................................60

10.2.2 Transmit Side...............................................................................................................61

11.

PER-CHANNEL CODE (IDLE) GENERATION ......................................................................61

11.1 TRANSMIT SIDE CODE GENERATION ...........................................................................62

11.1.1 Fixed Per-Channel Idle Code Insertion ......................................................................62

11.1.2 Unique Per-Channel Idle Code Insertion....................................................................63

11.2 RECEIVE SIDE CODE GENERATION...............................................................................63

11.2.1 Fixed Per-Channel Idle Code Insertion ......................................................................64

11.2.3 Unique Per-Channel Idle Code Insertion....................................................................64

12.

PER-CHANNEL LOOPBACK.....................................................................................................65

13.

CLOCK BLOCKING REGISTERS ............................................................................................65

14.

ELASTIC STORES OPERATION ..............................................................................................66

14.1 RECEIVE SIDE .....................................................................................................................66

14.2 TRANSMIT SIDE..................................................................................................................67

14.3 ELASTIC STORES INITIALIZATION ................................................................................67

14.4 MINIMUM DELAY MODE..................................................................................................67

15.

HDLC CONTROLLER.................................................................................................................68

15.1 HDLC FOR DS0S ..................................................................................................................68

15.1.1 Receive an HDLC Message .........................................................................................68

15.1.2 Transmit an HDLC Message .......................................................................................68

15.2 FDL/Fs EXTRACTION AND INSERTION .........................................................................69

15.3 HDLC and BOC CONTROLLER FOR THE FDL................................................................69

15.3.1 General Overview........................................................................................................69

15.3.2 Status Register for the HDLC......................................................................................70

15.3.3 Basic Operation Details ..............................................................................................71

15.3.4 HDLC/BOC Register Description ...............................................................................72

15.4 LEGACY FDL SUPPORT.....................................................................................................82

15.4.1 Overview......................................................................................................................82

15.4.2 Receive Section............................................................................................................82

15.4.3 Transmit Section..........................................................................................................84

15.5 D4/SLC-96 OPERATION......................................................................................................84

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