XRT72L52 Datasheet, PDF (125/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
PRELIMINARY
XRT72L52
REV. P1.1.3
16 registers, and insert them into the TR byte of the
outbound E3 frame. In the third of a set of 16 E3
Frames, the Transmit DS3/E3 Framer block will read
in the contents 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,
and Tx TTB-3 through Tx TTB-15 are used to trans-
mit 15 ASCII characters required for the E.164 num-
bering format.
2.4.6.10 Transmit E3 TTB-3 Register (E3, ITU-T
G.832)
TXE3 TTB-3 REGISTER (ADDRESS = 0X3B)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
TxTTB-3[7:0]
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
BIT 2
R/W
0
BIT 1
R/W
0
BIT 0
R/W
0
This Read/Write byte-field, along with the TxTTB-0
through TxTTB-2 and TxTTB-4 through TxTTB-15
registers permit a user to define a Trail Access Point
Identifier sequence of bytes, that will be transmitted to
the Remote Terminal. The Remote Receiving Termi-
nal will use this sequence of bytes to verify that it is
connected to the proper Transmitting Terminal. The
Transmit DS3/E3 Framer block will take the contents
of these 16 registers, and insert them into the TR byte
of the outbound E3 frame. In the fourth of a set of 16
E3 Frames, the Transmit DS3/E3 Framer block will
read in the contents 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, Tx
TTB-2 and Tx TTB-4 through Tx TTB-15 are used to
transmit 15 ASCII characters required for the E.164
numbering format.
2.4.6.11 Transmit E3 TTB-4 Register (E3, ITU-T
G.832)
TXE3 TTB-4 REGISTER (ADDRESS = 0X3C)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
TxTTB-4[7:0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
This Read/Write byte-field, along with the TxTTB-0
through TxTTB-3 and TxTTB-5 through TxTTB-15
registers permit a user to define a Trail Access Point
Identifier sequence of bytes, that will be transmitted to
the Remote Terminal. The Remote Receiving Termi-
nal will use this sequence of bytes to verify that it is
connected to the proper Transmitting Terminal. The
Transmit DS3/E3 Framer block will take the contents
of these 16 registers, and insert them into the TR byte
of the outbound E3 frame. In the fifth of a set of 16
E3 Frames, the Transmit DS3/E3 Framer block will
read in the contents 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-3 and Tx TTB-5 through Tx TTB-15
are used to transmit 15 ASCII characters required for
the E.164 numbering format.
2.4.6.12 Transmit E3 TTB-5 Register (E3, ITU-T
G.832)
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