XRT83VSH314ES Exar, XRT83VSH314ES Datasheet - Page 31

• Manufacturer Part Number: XRT83VSH314ES
• Description: Peripheral Drivers & Components - PCIs 14 CHT1/E1LIUSH LOW COST VERSION
• Manufacturer: Exar

Specifications of XRT83VSH314ES

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes

REV. 1.0.1
If ATAOS is selected by programming the appropriate global register, an AMI all ones signal will be transmitted
for each channel that experiences an RLOS condition. If RLOS does not occur, the ATAOS will remain inactive
until an RLOS on a given channel occurs. A simplified block diagram of the ATAOS function is shown in
Figure
F
The XRT83VSH314 can transmit a QRSS/PRBS random sequence to a remote location from TTIP/TRING. To
select QRSS or PRBS, see the register map for programming details. The polynomial is shown in
If TCLK is not present, pulled "Low", or pulled "High" the transmitter outputs at TTIP/TRING will automatically
send an all ones or an all zero signal to the line by programming the appropriate global register. By default, the
transmitters will send all zeros. To send all ones, the TCLKCNL bit must be set "High".
The short haul transmitter output pulses are generated using a 7-Bit internal DAC (6-Bit plus the MSB sign bit).
The line build out can be set to interface to five different ranges of cable attenuation by programming the
appropriate channel register. The pulse shape is divided into eight discrete time segments which are set to
fixed values to comply with the pulse template. The short haul LBO settings are shown in
4.6
4.5.1
4.5.2
4.6.1
IGURE
17.
17. S
Transmit Pulse Shaper and Filter
ATAOS (Automatic Transmit All Ones)
QRSS/PRBS Generation
T1 Short Haul Line Build Out (LBO)
IMPLIFIED
B
LOCK
R
ANDOM
LBO
ATAOS
RLOS
QRSS
PRBS
D
T
IAGRAM OF THE
ABLE
SETTING
0Ah (01010)
08h (01000)
09h (01001)
0Bh (01011)
0Ch (01100)
P
ATTERN
T
ABLE
TAOS
9: R
EQC[4:0]
10: S
ANDOM
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
HORT
ATAOS F
B
IT
2
2
H
20
15
T1
28
S
AUL
EQUENCE
- 1
- 1
UNCTION
R
Tx
ANGE OF
L
INE
B
133 - 266 Feet
266 - 399 Feet
399 - 533 Feet
533 - 655 Feet
P
UILD
0 - 133 Feet
OLYNOMIALS
C
ABLE
O
UT
A
2
2
TRING
TTENUATION
TTIP
20
15
E1
- 1
- 1
XRT83VSH314
Table
10.
Table
9.