參數(shù)資料
型號(hào)： XRT73L03BIV
廠商： EXAR CORP
元件分類(lèi)： 數(shù)字傳輸電路
英文描述： 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
中文描述： DATACOM, PCM TRANSCEIVER, PQFP120
封裝： 14 X 20 MM, LQFP-120
文件頁(yè)數(shù)： 8/61頁(yè)
文件大小： 342K
代理商： XRT73L03BIV
XRT73L03B
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.1
6
RECEIVE INTERFACE
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
49
111
43
RxClk_0
RxClk_1
RxClk_2
O
R
eceive Clock Output - Channel (n):
This output pin is the Recovered Clock signal from the incoming line sig-
nal for Channel (n). The Receive Section of Channel (n) outputs data via
the RPOS_(n) and RNEG_(n) output pins on the rising edge of this clock
signal.
Configure the Receive Section of Channel (n) to update the data on the
RPOS_(n) and RNEG_(n) output pins on the falling edge of RxClk_(n)
by doing one of the following:
a.
Operating in the Hardware Mode
Pull the RxClkINV pin to "High".
b.
Operating in the HOST Mode
Write a "1" into the RxClkINV bit-field within the Command Register.
50
110
44
RNEG_0
RNEG_1
RNEG_2
O
Receive Negative Data Output - Channel (n):
This output pin pulses "High" whenever Channel (n) of the XRT73L03B
has received a Negative Polarity pulse in the incoming line signal at the
RTIP_(n)/RRing_(n) inputs.
N
OTE
:
If the Channel (n) B3ZS/HDB3 Decoder is enabled, then the zero
suppression patterns in the incoming line signal (such as: "00V", "000V",
"B0V", "B00V") is not reflected at this output.
51
109
45
RPOS_0
RPOS_1
RPOS_2
O
Receive Positive Data Output - Channel (n):
This output pin pulses “High" whenever Channel (n) of the XRT73L03B
has received a Positive Polarity pulse in the incoming line signal at the
RTIP_(n)/RRing_(n) inputs.
N
OTE
:
If the Channel (n) B3ZS/HDB3 Decoder is enabled, then the zero
suppression patterns in the incoming line signal (such as: "00V", "000V",
"B0V", "B00V") is not reflected at this output.
71
85
79
RRing_0
RRing_1
RRing_2
I
Receive Ring Input - Channel (n):
This input pin along with RTIP_(n) is used to receive the bipolar line sig-
nal from the Remote DS3/E3/STS-1 Terminal.
72
84
80
RTIP_0
RTIP_1
RTIP_2
I
Receive TIP Input - Channel (n):
This input pin along with RRing_(n) is used to receive the bipolar line sig-
nal from the Remote DS3/E3/STS-1 Terminal.
74
82
100
REQEN_0
REQEN_1
REQEN_2
I
Receive Equalization Enable Input - Channel (n):
Setting this input pin "High" enables the Internal Receive Equalizer
within Channel (n). Setting this pin "Low" disables the Internal Receive
Equalizer. The guidelines for enabling and disabling the Receive Equal-
izer are described in Section 3.2.
N
OTE
:
This pin is ignored and should be tied to GND if the XRT73L03B
is going to be operating in the HOST Mode, (internally pulled-down).
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