XRT72L56 Datasheet, PDF (135/486 Pages) Exar Corporation – SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
PRELIMINARY
XRT72L56
REV. P1.1.2
teenth 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-11 and Tx TTB-13 through Tx TTB-
15 are used to transmit 15 ASCII characters required
for the E.164 numbering format.
2.4.6.20 Transmit E3 TTB-13 Register (E3, ITU-T
G.832)
TXE3 TTB-13 REGISTER (ADDRESS = 0X45)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
TxTTB-13[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 Tx TTB-0
through Tx TTB-12, Tx-TTB-14, and Tx TTB-15 regis-
ters permit a user to define a Trail Access Point Iden-
tifier sequence of bytes, that will be transmitted to the
Remote Terminal. The Remote Receiving Terminal
will use this sequence of bytes to verify that it is con-
nected 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 fourteenth 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-12, Tx TTB-14 and Tx TTB-15 are
used to transmit 15 ASCII characters required for the
E.164 numbering format.
2.4.6.21 Transmit E3 TTB-14 Register (E3, ITU-T
G.832)
TXE3 TTB-14 REGISTER (ADDRESS = 0X46)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
TxTTB-14[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 Tx TTB-0
through Tx TTB-13 and Tx TTB-15 registers permit a
user to define a Trail Access Point Identifier sequence
of bytes, that will be transmitted to the Remote Termi-
nal. The Remote Receiving Terminal will use this se-
quence 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 regis-
ters, and insert them into the TR byte of the outbound
E3 frame. In the fifteenth 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-13 and Tx TTB-15 are used to trans-
mit 15 ASCII characters required for the E.164 num-
bering format.
2.4.6.22 Transmit E3 TTB-15 Register (E3, ITU-T
G.832)
TXE3 TTB-15 REGISTER (ADDRESS = 0X47)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
TxTTB-15[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
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