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參數(shù)資料
| 型號： | XRT81L27IV |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP128 |
| 封裝： | TQFP-128 |
| 文件頁數(shù)： | 9/30頁 |
| 文件大小： | 194K |
| 代理商： | XRT81L27IV |
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XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
REV. 1.1.0
7
73
TVDD_5
Vdd
Transmitter 5 Positive Supply (3.3V± 5%)
74
TTIP_5
O
Transmitter 5 Tip Output:
Positive bipolar data output to the line.
75
PDTx_5
I-H
Power-down Transmitter 5:
(see pin 6)
76
RRING_5
I
Receiver 5 Bipolar Negative Input:
77
RTIP_5
I
Receiver 5 Bipolar Positive Input:
78
AGND
Gnd
Analog Supply Ground
79
RRING_3
I
Receiver 3 Bipolar Negative Input:
80
RTIP_3
I
Receiver 3 Bipolar Positive Input:
81
AVDD
AVdd
Analog Positive Supply(3.3V± 5%)
82
TGND_3
Gnd
Transmitter 3 Supply Ground
83
TRING_3
O
Transmitter 3 Ring Output:
Negative bipolar data output to the line.
84
TVDD_3
Vdd
Transmitter 3 Positive Supply(3.3V± 5%)
85
TTIP_3
O
Transmitter 3 Tip Output:
Positive bipolar data output to the line.
86
PDTx_3
I-H
Power-down Transmitter 3:
(see pin 6)
87
TGND_1
Gnd
Transmitter 1 Supply Ground.
88
TRING_1
O
Transmitter 1 Ring Output:
Negative bipolar data output to the line.
89
TVDD_1
Vdd
Transmitter 1 Positive Supply(3.3V± 5%)
90
TTIP_1
O
Transmitter 1 Tip Output:
Positive bipolar data output to the line.
91
PDTx_1
I-H
Power-down Transmitter 1:
(see pin 6)
92
RRING_1
I
Receiver 1 Bipolar Negative Input:
93
RTIP_1
I
Receiver 1 Bipolar Positive Input:
94
ICT
I-H
In-Circuit Testing (Active Low):
When this pin is tied to "Low", all output pins are forced to high imped-
ance state for in-circuit testing.
95
LOS_1
O
Receiver 1 Loss of Signal:
(see pin 2)
96
RClk_1
O
Receiver 1 Clock Output:
97
RNEG_1/
LCV_1
O
Receiver 1 Negative Data Output:
(see pin 34)
98
RPO_1S/
RDATA_1
O
Receiver 1 Positive/NRZ Data Output:
(see pin 35
)
99
LOS_3
O
Receiver 3 Loss of Signal:
(see pin 2)
100
RClk_3
O
Receiver 3 Clock Output:
101
RNEG_3/
LCV_3
O
Receiver 3 Negative Data Output:
(see pin 34)
PIN DESCRIPTIONS
N
OTE
: I -H
indicates an input pin with a 50k
pull-up Resistor, I-L indicates an input pin with a 50k
pull-down resistor.
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
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