參數(shù)資料
型號: XRT83SH38
廠商: Exar Corporation
英文描述: 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: 8通道的T1/E1/J1短途線路接口單元
文件頁數(shù): 23/78頁
文件大?。?/td> 606K
代理商: XRT83SH38
XRT83SH38
20
REV. 1.0.7
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
2.0
MASTER CLOCK GENERATOR
Using a variety of external clock sources, the on-chip frequency synthesizer generates the T1 (1.544MHz) or
E1 (2.048MHz) master clocks necessary for the transmit pulse shaping and receive clock recovery circuit.
There are two master clock inputs MCLKE1 and MCLKT1. In systems where both T1 and E1 master clocks are
available these clocks can be connected to the respective pins. All channels of a given XRT83SH38 must be
operated at the same clock rate, either T1, E1 or J1 modes. In systems that have only one master clock
source available (E1 or T1), that clock should be connected to both MCLKE1 and MCLKT1 inputs for proper
operation. T1 or E1 master clocks can be generated from 8kHz, 16kHz, 56kHz, 64kHz, 128kHz and 256kHz
external clocks under the control of CLKSEL[2:0] inputs according to EQC[4:0] determine the T1/E1 operating
mode. See for details.
F
IGURE
3. T
WO
I
NPUT
C
LOCK
S
OURCE
F
IGURE
4. O
NE
I
NPUT
C
LOCK
S
OURCE
T
ABLE
2: M
ASTER
C
LOCK
G
ENERATOR
MCLKE1
K
H
Z
MCLKT1
K
H
Z
CLKSEL2
CLKSEL1
CLKSEL0
MCLKRATE
M
ASTER
C
LOCK
K
H
Z
2048
2048
0
0
0
0
2048
2048
2048
0
0
0
1
1544
2048
1544
0
0
0
0
2048
1544
1544
0
0
1
1
1544
1544
1544
0
0
1
0
2048
2048
1544
0
0
1
1
1544
8
x
0
1
0
0
2048
8
x
0
1
0
1
1544
MCLKE1
MCLKT1
MCLKOUT
1.544MHz
or
2.048MHz
2.048MHz
+/-50ppm
1.544MHz
+/-50ppm
Two Input Clock Sources
MCLKE1
MCLKT1
MCLKOUT
1.544MHz
or
2.048MHz
One Input Clock Source
Input Clock Options
8kHz
16kHz
56kHz
64kHz
128kHz
256kHz
1.544MHz
2.048MHz
相關(guān)PDF資料
PDF描述
XRT83SH38_0609 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SH38IB 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216_06 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216IB 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT83SH38_0609 制造商:EXAR 制造商全稱:EXAR 功能描述:8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
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