NOTE: This method ca" />
參數(shù)資料
型號: XRT73L03BIV-F
廠商: Exar Corporation
文件頁數(shù): 27/61頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 3CH 120LQFP
標準包裝: 72
類型: 線路接口裝置(LIU)
驅動器/接收器數(shù): 3/3
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 120-LQFP
供應商設備封裝: 120-LQFP(14x20)
包裝: 托盤
XRT73L03B
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.1
31
NOTE: This method can only be used if the XRT73L03B is
operating in the HOST Mode.
If either of these methods are used to disable the
HDB3/B3ZS Encoder, then the LIU transmits the data
as received via the TPData_(n) and TNData_(n) input
pins.
2.4
THE TRANSMIT PULSE SHAPING CIRCUITRY
The Transmit Pulse Shaper Circuitry consists of a
Transmit Line Build-Out circuit which can be enabled
or disabled by setting the TxLEV_(n) input pin or
TxLEV_(n) bit-field to “High”or "Low". The purpose of
the Transmit Line Build-Out circuit is to permit config-
uration of each channel to transmit an output pulse
which is compliant to either of the following pulse
template requirements when measured at the Digital
Cross Connect System. Each of these Bellcore spec-
ifications state that the cable length between the
Transmit Output and the Digital Cross Connect sys-
tem can range anywhere from 0 to 450 feet.
The Isolated DSX-3 Pulse Template Requirement per
Bellcore GR-499-CORE is illustrated in Figure 19 and
the Isolated STSX-1 Pulse Template Requirement
per Bellcore GR-253-CORE is illustrated in Figure 20.
X
1
XX
X
COMMAND REGISTER CR2-(n)
D4
D3
D2
D1
D0
FIGURE 19. THE BELLCORE GR-499-CORE TRANSMIT OUTPUT PULSE TEMPLATE FOR DS3 APPLICATIONS
D S 3 Pu lse T em p late
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
-1
-0.
9
-0.
8
-0
.7
-0
.6
-0.
5
-0.
4
-0.
3
-0.
2
-0
.1
0
0.
1
0.
2
0.
3
0.
4
0.
5
0.
6
0.
7
0.
8
0.
9
1
1.
1
1.
2
1.
3
1.
4
Tim e , in UI
N
o
rm
a
liz
e
d
A
m
pli
tude
Lower Curve
Upper Curve
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相關代理商/技術參數(shù)
參數(shù)描述
XRT73L03IV 制造商:EXAR 制造商全稱:EXAR 功能描述:3 CHANNEL E3/DS3/STS-1 LINE INTERFCE UNIT
XRT73L03IVS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC
XRT73L04A 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04AIV 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04B 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT