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DS2156LN+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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DS2156LN+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 265 page DS2156 3 of 265 13.2.1 T1 Operation ........................................................................................................................................85 13.2.2 E1 Operation ........................................................................................................................................85 13.3 FRAMES OUT-OF-SYNC COUNT REGISTER (FOSCR).................................................................. 86 13.3.1 T1 Operation ........................................................................................................................................86 13.3.2 E1 Operation ........................................................................................................................................86 13.4 E-BIT COUNTER (EBCR) ........................................................................................................... 87 14. DS0 MONITORING FUNCTION..................................................................................... 88 15. SIGNALING OPERATION ............................................................................................. 90 15.1 RECEIVE SIGNALING .................................................................................................................. 90 15.1.1 Processor-Based Signaling..................................................................................................................90 15.1.2 Hardware-Based Receive Signaling ....................................................................................................91 15.2 TRANSMIT SIGNALING ................................................................................................................ 96 15.2.1 Processor-Based Mode .......................................................................................................................96 15.2.2 Software Signaling Insertion-Enable Registers, E1 CAS Mode ........................................................100 15.2.3 Software Signaling Insertion-Enable Registers, T1 Mode .................................................................102 15.2.4 Hardware-Based Mode ......................................................................................................................102 16. PER-CHANNEL IDLE CODE GENERATION.............................................................. 103 16.1 IDLE-CODE PROGRAMMING EXAMPLES..................................................................................... 104 17. CHANNEL BLOCKING REGISTERS .......................................................................... 108 18. ELASTIC STORES OPERATION ................................................................................ 111 18.1 RECEIVE SIDE ......................................................................................................................... 114 18.1.1 T1 Mode .............................................................................................................................................114 18.1.2 E1 Mode.............................................................................................................................................114 18.2 TRANSMIT SIDE ....................................................................................................................... 114 18.2.1 T1 Mode .............................................................................................................................................115 18.2.2 E1 Mode.............................................................................................................................................115 18.3 ELASTIC STORES INITIALIZATION .............................................................................................. 115 18.4 MINIMUM DELAY MODE ............................................................................................................ 115 19. G.706 INTERMEDIATE CRC-4 UPDATING (E1 MODE ONLY).................................. 116 20. T1 BIT-ORIENTED CODE (BOC) CONTROLLER ...................................................... 117 20.1 TRANSMIT BOC....................................................................................................................... 117 Transmit a BOC................................................................................................................................................117 20.2 RECEIVE BOC ......................................................................................................................... 117 Receive a BOC.................................................................................................................................................117 21. ADDITIONAL (SA) AND INTERNATIONAL (SI) BIT OPERATION (E1 ONLY).......... 120 21.1 METHOD 1: HARDWARE SCHEME ............................................................................................. 120 21.2 METHOD 2: INTERNAL REGISTER SCHEME BASED ON DOUBLE-FRAME ...................................... 120 21.3 METHOD 3: INTERNAL REGISTER SCHEME BASED ON CRC4 MULTIFRAME ................................ 123 22. HDLC CONTROLLERS ............................................................................................... 133 22.1 BASIC OPERATION DETAILS ..................................................................................................... 133 22.2 HDLC CONFIGURATION ........................................................................................................... 133 22.2.1 FIFO Control ......................................................................................................................................137 22.3 HDLC MAPPING ...................................................................................................................... 138 22.3.1 Receive ..............................................................................................................................................138 22.3.2 Transmit .............................................................................................................................................140 22.3.3 FIFO Information ................................................................................................................................145 22.3.4 Receive Packet-Bytes Available ........................................................................................................145 22.3.5 HDLC FIFOs ......................................................................................................................................146 22.4 RECEIVE HDLC CODE EXAMPLE.............................................................................................. 147 22.5 LEGACY FDL SUPPORT (T1 MODE).......................................................................................... 147 22.5.1 Overview ............................................................................................................................................147 22.5.2 Receive Section .................................................................................................................................147 22.5.3 Transmit Section ................................................................................................................................149 |
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