參數(shù)資料
型號(hào)： XRT73LC04AIV-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 5/64頁(yè)
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 4CH 144LQFP
標(biāo)準(zhǔn)包裝： 60
類(lèi)型： 線(xiàn)路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 4/4
規(guī)程： DS3，E3，STS-1
電源電壓： 3.135 V ~ 3.465 V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 144-LQFP
供應(yīng)商設(shè)備封裝： 144-LQFP（20x20）
包裝： 托盤(pán)
XRT73LC04A
.
9
REV. 1.0.2
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
52
HOST/(HW)
I
HOST-Hardware Mode Select:
This input pin is used to enable or disable the Microprocessor Serial
Interface (e.g., consisting of the SDI, SDO, SClk, and CS pins).
Setting this input pin "High" enables the Microprocessor Serial Interface
(e.g. configures the XRT73LC04A to operate in the HOST Mode). In this
mode, configure the XRT73LC04A via the Microprocessor Serial Inter-
face. When the XRT73LC04A is operating in the HOST Mode, then it
ignores the states of many of the discrete input pins. Setting this input
pin "Low" disables the Microprocessor Serial Interface (e.g., configures
the XRT73LC04A to operate in the Hardware Mode). In this mode, many
of the external input control pins are functional. (Internally Pulled-up)
OPERATING MODE SELECT
PIN #
NAME
TYPE
DESCRIPTION
CONTROL AND ALARM INTERFACE
PIN #
NAME
TYPE
DESCRIPTION
36
20
1
17
MRing_0
MRing_1
MRing_2
MRing_3
I
Monitor Ring Input - Channel (n):
The bipolar line output signal from TRing_(n) can be connected to this
pin via a 270-ohm resistor in order to check for line driver failure. This
pin is internally pulled "High".
35
21
2
16
MTIP_0
MTIP_1
MTIP_2
MTIP_3
I
Monitor Tip Input - Channel (n):
The bipolar line output signal from TTIP_(n) can be connected to this pin
via a 270-ohm resistor in order to check for line driver failure. This pin is
internally pulled "High".
48
26
133
11
DMO_0
DMO_1
DMO_2
DMO_3
O
Drive Monitor Output - Channel (n):
If no transmitted AMI signal is present on MTIP_(n) and MRing_(n) input
pins for 128±32 TxClk periods, then DMO_(n) toggles and remains
"High" until the next AMI signal is detected.
46
45
135
136
TAOS_0
TAOS_1
TAOS_2
TAOS_3
I
Transmit All Ones Select - Channel (n):
A "High" on this pin causes the Transmit Section, within Channel (n), to
generate and transmit a continuous AMI all “1’s" pattern onto the line.
The frequency of this "1’s" pattern is determined by TxClk_(n).
This input pin is ignored if the XRT73LC04A is operating in the HOST
Mode.
NOTE: This pin should be tied to GND if the XRT73LC04A is going to be
operating in the HOST Mode, (internally pulled-down).
64
67
117
114
RLOS_0
RLOS_1
RLOS_2
RLOS_3
O
Receive Loss of Signal Output Indicator - Channel (n):
This output pin toggles "High" if Channel (n) has detected a Loss of Sig-
nal Condition in the incoming line signal.
The criteria that the XRT73LC04A uses to declare an LOS Condition
depends upon whether the device is operating in the E3 or STS-1/DS3
Mode.
65
68
116
113
RLOL_0
RLOL_1
RLOL_2
RLOL_3
O
Receive Loss of Lock Output Indicator - Channel (n):
This output pin toggles "High" if Channel (n) has detected a Loss of Lock
Condition. Channel (n) declares an LOL (Loss of Lock) condition if the
recovered clock frequency deviates from the Reference Clock frequency
(available at the EXClk_(n) input pin) by more than 0.5%.
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