參數(shù)資料
型號(hào): AK2540
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Quad T1 Transceiver
中文描述: 的4 T1收發(fā)器
文件頁數(shù): 19/33頁
文件大?。?/td> 159K
代理商: AK2540
ASAHI K ASEI [AK2540]
MS0012-E-00 2000/1
19
Jitter Attenuator (Hardware Mode and Host Mode)
J itter Attenuator may be placed either transmitter path or receiver path, or bypassed according to
J ASELR and J ASELT both in Hardware Mode and Host Mode as described in table 2. J itter
Attenuators are to be placed at the same place in channel 1 through channel 4.
Table 2. Jitter Attenuator Place Selection
JASELR
JASELT
Location of Jitter Attenuator
0
0
Bypassed
0
1
Transmitter
1
0
Receiver
1
1
Reserved (NA)
AIS (Hardware Mode and Host Mode)
AIS in channel x is selected when AISx is “high”. In AIS mode the TPOS and TNEG inputs are
ignored, but the transmitter remains locked to the TCLK input. AIS can be enabled
simultaneously with Local Loopback. AIS overdrives Remote Loopback. In this mode, either all
ones or all zeros are transmitted according to the AIS1SEL selection. (see table 3)
Table 3. AIS Control
AISx
AIS1SEL
TTIP/TRING
0
0
Normal
0
1
Normal
1
0
All “0”
1
1
All “1”
X=1,2,3 and 4
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