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參數(shù)資料
| 型號(hào)： | XRT83VSH38IB |
| 廠(chǎng)商： | EXAR CORP |
| 元件分類(lèi)： | 數(shù)字傳輸電路 |
| 英文描述： | 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PBGA225 |
| 封裝： | 19 X 19 MM, 1 MM PITCH, PLASTIC, BGA-225 |
| 文件頁(yè)數(shù)： | 24/76頁(yè) |
| 文件大?。?/td> | 722K |
| 代理商： | XRT83VSH38IB |
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XRT83VSH38
21
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.7
3.1.2
CASE 2: Internal Termination With One External Fixed Resistor for All Modes
Along with the internal termination, a high precision external fixed resistor can be used to optimize the return
loss. This external resistor can be used for all modes of operation ensuring one bill of materials. There are
three resistor values that can be used by setting the RxRES[1:0] bits in the appropriate channel register.
Selecting the value for the external fixed resistor is shown in
Table 4
.
By default, RxRES[1:0] is set to "None" for no external fixed resistor. If an external fixed resistor is used, the
XRT83VSH38 uses the parallel combination of the external fixed resistor and the internal termination as the
input impedance. See
Figure 7
for a typical connection diagram using the external fixed resistor.
N
OTE
:
Without the external resistor, the XRT83VSH38 meets all return loss specifications. This mode was created to add
flexibility for optimizing return loss by using a high precision external resistor.
F
IGURE
7. T
YPICAL
C
ONNECTION
D
IAGRAM
U
SING
O
NE
E
XTERNAL
F
IXED
R
ESISTOR
T
ABLE
4: S
ELECTING
THE
V
ALUE
OF
THE
E
XTERNAL
F
IXED
R
ESISTOR
R
X
RES[1:0]
E
XTERNAL
F
IXED
R
ESISTOR
0h (00)
None
1h (01)
240
2h (10)
210
3h (11)
150
R
TIP
R
RING
XRT83VSH38 LIU
1:1
Internal Impedance
Line Interface T1/E1/J1
R
R=240
, 210
, or 150
Receiver
Input
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT84L14 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L18 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L38 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L38_06 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L38IB | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT83VSH38IB-F | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 8 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 |
| XRT83VSH38IB-F | 制造商:Exar Corporation 功能描述:T1/E1 LIU IC |
| XRT84L38 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:OCTAL T1/E1/J1 FRAMER |
| XRT84L38_06 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:OCTAL T1/E1/J1 FRAMER |
| XRT84L38IB | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 8 Ch T1/E1 Framer 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(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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