參數(shù)資料
型號(hào): XRT73LC00AIVTR
廠商: Exar Corporation
文件頁數(shù): 48/61頁
文件大?。?/td> 0K
描述: IC LIU STS1/DS3/E3 SGL 44TQFP
標(biāo)準(zhǔn)包裝: 1,000
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 1/1
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: 44-LQFP
供應(yīng)商設(shè)備封裝: 44-TQFP(10x10)
包裝: 帶卷 (TR)
XRT73LC00A
49
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.0.2
Presented in Figure 33, if LIU # 1 (U1) fails, then LIU # 2 (U2) drives its DMO output pin “High”. Likewise, if LIU
# 2 (U2) fails, then LIU # 1 (U1) drives its DMO output pin “High”.
The scheme presented in Figure 33 is a better design approach. It overcomes situations in which a LIU
monitoring its own signal (Figure 32) may experience a failure mode such that it cannot drive a bipolar signal
onto the line. That same failure mode may prevent the LIU from driving the DMO output pin “High”.
4.6
The TAOS (Transmit All OneS) Feature
The XRT73LC00A can transmit an all “1’s” pattern onto the line by toggling a single input pin or by setting a
single bit-field in one of the Command Registers to “1”.
NOTE: When this feature is activated, the Transmit Section of the XRT73LC00A overwrites the Terminal Equipment data
with this all “1’s” pattern.
This feature can be activated by either of the following methods.
FIGURE 33. TWO LIU’S, EACH MONITORING THE TRANSMIT OUTPUT SIGNAL OF THE OTHER LIU IC
R1
31.6
BNC
T1
R2
31.6
R7
31.6
BNC
R8
31.6
TTIP
TRING
R3
270
R4
270
R5
270
R6
270
TRING
TTIP
MRING
MTIP
MRING
MTIP
DMO_Channel_2
DMO_Channel_1
DMO
T2
PE-68629
TXOFF
U1
U2
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XRT73LC00IV 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73LC03A 制造商:EXAR 制造商全稱:EXAR 功能描述:3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
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