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參數(shù)資料
| 型號： | XRT83L34 |
| 廠商： | Exar Corporation |
| 英文描述： | QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| 中文描述： | 四T1/E1/J1收發(fā)左/上海收發(fā)器和時鐘恢復和抖動衰減器 |
| 文件頁數(shù)： | 42/82頁 |
| 文件大小： | 447K |
| 代理商： | XRT83L34 |
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XRT83L34
QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.3.4
39
LOOP-BACK MODES
The XRT83L34 supports several Loop-Back modes under both
Hardware
and
Host
control. In
Hardware
mode the two LOOP[1:0] pins control the Loop-Back functions for each channel independently according to
Table 14
.
In
Host
mode the Loop-Back functions are controlled by the three LOOP[2:0] interface bits. Each channel can
be programmed independently according to
Table 15
.
LOCAL ANALOG LOOP-BACK (ALOOP)
With Local Analog Loop-Back activated, the transmit data at TTIP and TRING are looped-back to the analog
input of the receiver. External inputs at RTIP/RRING in this mode are ignored while valid transmit data
continues to be sent to the line. Local Analog Loop-Back exercises most of the functional blocks of the
XRT83L34 including the jitter attenuator which can be selected in either the transmit or receive paths. Local
Analog Loop-Back is shown in
Figure 20
.
In this mode, the jitter attenuator (if selected) can be placed in the transmit or receive path.
T
ABLE
14: L
OOP
-
BACK
CONTROL
IN
H
ARDWARE
MODE
LOOP1
LOOP0
L
OOP
-
BACK
M
ODE
0
0
None
0
1
Analog
1
0
Remote
1
1
Digital
T
ABLE
15: L
OOP
-
BACK
CONTROL
IN
H
OST
MODE
LOOP2
LOOP1
LOOP0
L
OOP
-
BACK
M
ODE
0
X
X
None
1
0
0
Dual
1
0
1
Analog
1
1
0
Remote
1
1
1
Digital
F
IGURE
20. L
OCAL
A
NALOG
L
OOP
-
BACK
SIGNAL
FLOW
Rx
Data &
Clock
Recovery
Decoder
TPOS
TNEG
TCLK
RCLK
RPOS
RNEG
Tx
Encoder
Timing
Control
JA
TTIP
TRING
RTIP
RRING
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| XRT83SH314_0610 | 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT83L34_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83L34ES | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT83L34IV | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT83L34IV-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT83L34IVTR | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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