參數(shù)資料
型號(hào)： XRT83VSH314IB
廠商： EXAR CORP
元件分類(lèi)： 數(shù)字傳輸電路
英文描述： 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述： DATACOM, PCM TRANSCEIVER, PBGA304
封裝： 31 X 31 MM, 1.27 MM PITCH, PLASTIC, BGA-304
文件頁(yè)數(shù)： 30/80頁(yè)
文件大小： 497K
代理商： XRT83VSH314IB
XRT83VSH314
27
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
4.3
The XRT83VSH314 LIU is ideal for multiplexer or mapper applications where the network data crosses
multiple timing domains. As the higher data rates are de-multiplexed down to T1 or E1 data, stuffing bits are
typically removed which can leave gaps in the incoming data stream. The jitter attenuator can be selected in
the transmit path with a 32-Bit or 64-Bit FIFO that is used to smooth the gapped clock into a steady T1 or E1
output. The maximum gap width of the 14-Channel LIU is shown in
Table 8
.
Jitter Attenuator
N
OTE
:
If the LIU is used in a loop timing system, the jitter attenuator can be selected in the receive path. See the Receive
Section of this datasheet.
4.4
TAOS (Transmit All Ones)
The XRT83VSH314 has the ability to transmit all ones on a per channel basis by programming the appropriate
channel register. This function takes priority over the digital data present on the TPOS/TNEG inputs. For
example: If a fixed "0011" pattern is present on TPOS in single rail mode and TAOS is enabled, the transmitter
will output all ones. In addition, if digital or dual loopback is selected, the data on the RPOS output will be
equal to the data on the TPOS input.
Figure 16
is a diagram showing the all ones signal at TTIP and TRING.
F
IGURE
16. TAOS (T
RANSMIT
A
LL
O
NES
)
4.5
In addition to TAOS, the XRT83VSH314 offers multiple diagnostic features for analyzing network integrity such
as ATAOS and QRSS on a per channel basis by programming the appropriate registers. These diagnostic
features take priority over the digital data present on TPOS/TNEG inputs. The transmitters will send the
diagnostic code to the line and will be maintained in the digital loopback if selected. When the LIU is
responsible for sending diagnostic patterns, the LIU is automatically placed in the single rail mode.
Transmit Diagnostic Features
N
OTE
:
Dual and Remote Loopback have priority over TAOS.
T
ABLE
8: M
AXIMUM
G
AP
W
IDTH
FOR
M
ULTIPLEXER
/M
APPER
A
PPLICATIONS
FIFO D
EPTH
M
AXIMUM
G
AP
W
IDTH
32-Bit
9 UI
64-Bit
9 UI
TAOS
1
1
1
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參數(shù)描述
XRT83VSH314IB-F 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 14 Channel Short-Haul RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83VSH314IB-SAM 制造商:Exar Corporation 功能描述:FOR FUJITSU ONLY
XRT83VSH316 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83VSH316_07 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83VSH316ES 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 16 CH T1/E1LIUSH LOW COST VERSION RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
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