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參數(shù)資料
| 型號： | XRT81L27 |
| 廠商： | Exar Corporation |
| 英文描述： | Seven Channel E1 Line Interface Unit with Clock Recovery(7通道 E1線接口單元（帶時鐘恢復）) |
| 中文描述： | 七通道E1線路接口單元的時鐘恢復（7通道素E1線接口單元（帶時鐘恢復）） |
| 文件頁數(shù)： | 11/28頁 |
| 文件大小： | 140K |
| 代理商： | XRT81L27 |
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XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
PRELIMINARY
REV. P1.0.1
11
111
TNEG4/CODE
I
Transmitter 4 Negative Data Input:
In dual-rail mode, this signal Is the n-rail data input for the transmitter 4.
See pin 39 description for single-rail mode operation.
Internally pulled-down with 50K
112
TAOS4
I
Transmit All Ones:
This pin is set to insert AMI all ones data to the line using MCLK as refer-
ence. In Host Mode, this pin can be left unconnected. Internally pull-down
with 50K
.
113
TAOS3
I
Transmit All Ones:
This pin is set to insert AMI all ones data to the line using MCLK as refer-
ence. In Host Mode, this pin can be left unconnected. Internally pull-down
with 50K
.
114
TNEG3/CODE
I
Transmitter 3 Negative Data Input:
In dual-rail mode, this signal is the n-rail data input for transmitter 3.
See pin 39 description for single-rail mode operation.
Internally pulled-down with 50K
.
115
TPOS3/TDATA3
I
Transmitter 3 Positive Data Input:
In dual-rail mode, this signal is the p-rail input data for transmitter 3.
Transmitter 3 NRZ Data Input:
In single-rail mode, this signal is used as the NRZ input data for transmitter 3.
116
TClk3
I
Transmitter 3 Clock Input:
E1 rate at 2.048MHz ± 50ppm.
117
TAOS1
I
Transmit All Ones:
This pin is set to insert AMI all ones data to the line using MCLK as refer-
ence. In Host Mode, this pin can be left unconnected. Internally pull-down
with 50K
.
118
TNEG!/CODE
I
Transmitter 1 Negative Data Input:
In dual-rail mode, this signal is the n-rail data input for transmitter 1.
See pin 39 description for single-rail mode operation.
Internally pulled-down with 50K
.
119
TPOS1/TDATA1
I
Transmitter 1 Positive Data Input:
In dual-rail mode, this signal is the p-rail input data for transmitter 1.
Transmitter 1 NRZ Data Input:
In single-rail mode, this signal is used as the NRZ input data for transmitter 1.
120
TClk1
I
Transmitter 1 Clock Input:
E1 rate at 2.048MHz ± 50ppm.
121
GND
****
Digital Supply Ground
122
VDD
****
Digital Positive Supply(3.3V± 5%)
123
RPOS3/RDATA3
O
Receiver 3 Positive Data Output:
In dual-rail mode, this signal is the receive p-rail output data.
Receiver 3 NRZ Data Output:
In single-rail mode, this signal is the receive output data.
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
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