參數(shù)資料
型號: XRT82L34
廠商: Exar Corporation
英文描述: Quad T1/E1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(四 T1/E1/J1線收發(fā)器(帶時鐘恢復和振蕩衰減器))
中文描述: 四路T1/E1/J1收發(fā)線收發(fā)器時鐘恢復和抖動衰減器(四的T1/E1/J1線收發(fā)器(帶時鐘恢復和振蕩衰減器))
文件頁數(shù): 11/50頁
文件大?。?/td> 648K
代理商: XRT82L34
á
XRT82L34
QUAD T1/E1/J1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.0.5
9
58
D[5]
LOOPSEL
I/O
I
Data Bus[5]
.
Microprocessor read/write data bus.
Loop-back Mode Select
.
In Hardware Mode, if LOOPEN(0-3) is “High”, this pin is used for selecting loop-
back mode. Connect this pin "High" to select local loop-back and Low to select
remote loop-back. Digital Loop-back is not supported in Hardware Mode.
N
OTE
:
Internally pulled -up with a 50k
resistor.
59
D[4]
LOOPEN3
I/O
I
Data Bus[4]
.
Microprocessor read/write data bus.
Loop-back Enable
.
In Hardware Mode, connect this pin “High” to enable channel 3 loop-back oper-
ation. Remote or local loop-back is determined by pin 58 setting. Digital Loop-
back is not supported in Hardware Mode.
N
OTE
:
Internally pulled -up with a 50k
resistor.
60
D[3]
LOOPEN2
I/O
I
Data Bus[3]
.
Microprocessor read/write data bus.
Loop-back Enable
.
In Hardware Mode, connect this pin "High" to enable channel 2 loop-back oper-
ation. Remote or local loop-back is determined by pin 58 setting. Digital Loop-
back is not supported in Hardware Mode.
N
OTE
:
Internally pulled -up with a 50k
resistor.
61
D[2]
LOOPEN1
I/O
I
Data Bus[2]
.
Microprocessor read/write data bus.
Loop-back Enable
.
In Hardware Mode, connect this pin "High" to enable channel 1 loop-back oper-
ation. Remote or local loop-back is determined by pin 58 setting. Digital Loop-
back is not supported in Hardware Mode.
N
OTE
:
Internally pulled -up with a 50k
resistor.
62
D[1]
LOOPEN0
I/O
I
Data Bus[1]
.
Microprocessor read/write data bus.
L
oop-back Enable
.
In Hardware Mode, connect this pin “High” to enable channel 0 loop-back oper-
ation. Remote or local loop-back is determined by pin 58 setting. Digital Loop-
back is not supported in Hardware Mode.
N
OTE
:
Internally pulled -up with a 50k
resistor.
63
D[0]
FIFOS
I/O
I
Data Bus[0]
.
Microprocessor read/write data bus.
FIFO Size Select.
In Hardware Mode, connect this pin "High" selects 64 bit FIFO depth and con-
nect Low to select 32 bit FIFO depth.
N
OTE
:
Internally pulled -up with a 50k
resistor.
64
DVDD
****
Digital Positive Supply(3.3V± 5%)
65
DGND
****
Digital Ground
PIN DESCRIPTIONS
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
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XRT82L38 Octal E1/T1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(八 T1/E1/J1線收發(fā)器(帶時鐘恢復和振蕩衰減器))
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