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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉锛� | XRT81L27IV-F |
| 寤犲晢锛� | Exar Corporation |
| 鏂囦欢闋佹暩(sh霉)锛� | 26/30闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC LIU EI 7CH 3.3V 128TQFP |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 72 |
| 鎳�(y墨ng)鐢細 | DECT |
| 鎺ュ彛锛� | 涓茶 |
| 闆绘簮闆诲锛� | 3.3V |
| 灏佽/澶栨锛� | 128-LQFP |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 128-TQFP锛�14x20锛� |
| 鍖呰锛� | 鎵樼洡 |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
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谩
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)
鈥淟ow鈥� Resets the register contents to zero.
Loop-back Enable (Active-low): (Hardware Mode)
鈥淟ow鈥� 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 鈥淟ow鈥� 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卤 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卤 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卤 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卤 5%)
25
TRING_4
O
Transmitter 4 Ring Output: Negative bipolar data output to the line.
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