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參數(shù)資料
| 型號： | XRT81L27IV |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 26/30頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU EI 7CH 3.3V 128TQFP |
| 標準包裝： | 72 |
| 應用： | DECT |
| 接口： | 串行 |
| 電源電壓： | 3.3V |
| 封裝/外殼： | 128-LQFP |
| 供應商設備封裝： | 128-TQFP（14x20） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
REV. 1.1.0
3
PIN DESCRIPTIONS
NOTE: I -H indicates an input pin with a 50k
pull-up Resistor, I-L indicates an input pin with a 50k pull-down resistor.
PIN #NAME
TYPE
DESCRIPTION
1
RClk_0
O
Receiver 0 Clock Output
2
LOS_0
O
Receiver 0 Loss of Signal:
This signal is asserted "High" to indicate loss of signal at the receive
input.
3
RST
LBEN
I-H
Reset (Active-low): (Host Mode)
“Low” Resets the register contents to zero.
Loop-back Enable (Active-low): (Hardware Mode)
“Low” for Loop-back mode enable.
4
RTIP_0
I
Receiver 0 Bipolar Positive Input:
5
RRING_0
I
Receiver 0 Bipolar Negative Input:
6
PDTx_0
I-H
Power-down Transmitter 0:
This pin is operational for both Host or Hardware Mode.
This pin MUST be pulled “Low” to enable TTIP_0 and TRING_0 output
buffers.
Pull this pin "High" to power-down channel 0 transmitter and set TTIP_0
and TRING_0 outputs to high impedance.
7
TTIP_0
O
Transmitter 0 Tip Output: Positive bipolar data output to the line
8
TVDD_0
Vdd
Transmitter 0 Positive Supply (3.3V± 5%)
9
TRING_0
O
Transmitter 0 Ring Output: Negative bipolar data output to the line.
10
TGND_0
Gnd
Transmitter 0 Supply Ground
11
PDTx_2
I-H
Power-down Transmitter 2: (see pin 6)
12
TTIP_2
O
Transmitter 2 Tip Output: Positive bipolar data output to the line.
13
TVDD_2
Vdd
Transmitter 2 Positive Supply(3.3V± 5%)
14
TRING_2
O
Transmitter 2 Ring Output: Negative bipolar data output to the line.
15
TGND_2
Gnd
Transmitter 2 Supply Ground.
16
AVDD
AVdd
Analog Positive Supply(3.3V± 5%)
17
RTIP_2
I
Receiver 2 Bipolar Positive Input:
18
RRING_2
I
Receiver 2 Bipolar Negative Input:
19
AGND
Gnd
Analog Supply Ground.
20
RTIP_4
I
Receiver 4 Bipolar Positive Input:
21
RRING_4
I
Receiver 4 Bipolar Negative Input:
22
PDTx_4
I-H
Power-down Transmitter 4: (see pin 6)
23
TTIP_4
O
Transmitter 4 Tip Output: Positive bipolar data output to the line.
24
TVDD_4
Vdd
Transmitter 4 Positive Supply(3.3V± 5%)
25
TRING_4
O
Transmitter 4 Ring Output: Negative bipolar data output to the line.
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| XRT82D20_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
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