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XRT7250 Datasheet(PDF) 115 Page - Exar Corporation |
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XRT7250 Datasheet(HTML) 115 Page - Exar Corporation |
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115 / 463 page  XRT7250 DS3/E3 FRAMER IC áç áç áç áç REV. 1.1.1 96 connected to the proper Transmitting Terminal. The Transmit E3 Framer will take the contents of these 16 registers, and insert them into the TR byte of the out- bound E3 frame. In the seventh of a set of 16 E3 Frames, the Transmit E3 Framer will read in the con- tents of this register, and insert it into the TR byte- field, within the very next outbound E3 frame. The contents of this register, along with Tx TTB-1 through Tx TTB-5 and Tx TTB-7 through Tx TTB-15 are used to transmit 15 ASCII characters required for the E.164 numbering format. 2.3.6.14 Transmit E3 TTB-7 Register (E3, ITU-T G.832) This Read/Write byte-field, along with the Tx TTB-0 through Tx TTB-6 and Tx TTB-8 through Tx TTB-15 registers allows a user to define a Trail Access Point Identifier sequence of bytes, that will be transmitted to the Far-End Terminal. The Far-End Receiving Termi- nal will use this sequence of bytes to verify that it is connected to the proper Transmitting Terminal. The Transmit E3 Framer will take the contents of these 16 registers, and insert them into the TR byte of the out- bound E3 frame. In the eighth of a set of 16 E3 Frames, the Transmit E3 Framer will read in the con- tents of this register, and insert it into the TR byte- field, within the very next outbound E3 frame. The contents of this register, along with Tx TTB-1 through Tx TTB-6 and Tx TTB-8 through Tx TTB-15 are used to transmit 15 ASCII characters required for the E.164 numbering format. 2.3.6.15 Transmit E3 TTB-8 Register (E3, ITU-T G.832) This Read/Write byte-field, along with the Tx TTB-0 through Tx TTB-7 and Tx TTB-9 through Tx TTB-15 registers allows a user to define a Trail Access Point Identifier sequence of bytes, that will be transmitted to the Far-End Terminal. The Far-End Receiving Termi- nal will use this sequence of bytes to verify that it is connected to the proper Transmitting Terminal. The Transmit E3 Framer will take the contents of these 16 registers, and insert them into the TR byte of the out- bound E3 frame. In the ninth of a set of 16 E3 Frames, the Transmit E3 Framer will read in the con- tents of this register, and insert it into the TR byte- field, within the very next outbound E3 frame. The contents of this register, along with Tx TTB-1 through Tx TTB-7 and Tx TTB-9 through Tx TTB-15 are used to transmit 15 ASCII characters required for the E.164 numbering format. 2.3.6.16 Transmit E3 TTB-9 Register (E3, ITU-T G.832) TXE3 TTB-7 REGISTER (ADDRESS = 0X3F) BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0 TxTTB-7[7:0] R/W R/W R/W R/W R/W R/W R/W R/W 00 000 000 TXE3 TTB-8 REGISTER (ADDRESS = 0X40) BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0 TxTTB-8[7:0] R/W R/W R/W R/W R/W R/W R/W R/W 00 000 000 TXE3 TTB-9 REGISTER (ADDRESS = 0X41) BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0 TxTTB-9[7:0] R/W R/W R/W R/W R/W R/W R/W R/W 00 000 000 |
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