參數(shù)資料
型號: XRT83VSH38
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): 22/76頁
文件大?。?/td> 722K
代理商: XRT83VSH38
XRT83VSH38
19
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.7
2.0
MASTER CLOCK GENERATOR
Using 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 XRT83VSH38 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.
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
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
1.544kHz
2.048kHz
相關(guān)PDF資料
PDF描述
XRT83VSH38IB 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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