參數(shù)資料
型號: XRT83SL30
廠商: Exar Corporation
英文描述: SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
中文描述: 單通道的T1/E1/J1上海收發(fā)器時鐘恢復(fù)和抖動衰減器
文件頁數(shù): 11/76頁
文件大?。?/td> 376K
代理商: XRT83SL30
á
XRT83SL30
SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.0.4
8
JITTER ATTENUATOR
S
IGNAL
N
AME
P
IN
#
T
YPE
D
ESCRIPTION
JABW
46
I
Jitter Attenuator Bandwidth
In
Hardware
and E1 mode, when JABW=”0” the jitter attenuator bandwidth is
10Hz (normal mode). Setting JABW to “1” selects a 1.5Hz Bandwidth for the
Jitter Attenuator and the FIFO length will be automatically set to 64 bits. In T1
mode the Jitter Attenuator Bandwidth is always set to 3Hz, and the state of
this pin has no effect on the Bandwidth. See table under JASEL[1:0] pin,
below.
N
OTE
:
Internally pulled “Low” with a 50k
resistor.
JASEL1
JASEL0
47
48
I
Jitter Attenuator select pin 1
Jitter Attenuator select pin 0
In
Hardware Mode
, JASEL0, JASEL1 and JABW pins are used to place the
jitter attenuator in the transmit path, the receive path or to disable it and set
the jitter attenuator bandwidth and FIFO size per the following table.
N
OTE
:
These pins are internally pulled "Low" with 50k
resistors.
Disabled
Transmit
Receive
Receive
------
32/32
32/32
64/64
------
3
3
3
------
10
10
10
0
0
1
1
0
1
0
1
0
0
0
0
Disabled
Transmit
Receive
Receive
--------
32/64
32/64
64/64
------
3
3
3
------
1.5
1.5
1.5
0
0
1
1
0
1
0
1
1
1
1
1
JA Path
JA BW (Hz)
T1
FIFO Size
T1/E1
JASEL1
JASEL0
JABW
E1
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