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參數(shù)資料
| 型號： | XRT83L314IB-L |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 3/84頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU T1/E1/J1 14CH 304TBGA |
| 標(biāo)準(zhǔn)包裝： | 27 |
| 類型： | 線路接口裝置（LIU） |
| 驅(qū)動器/接收器數(shù)： | 14/14 |
| 規(guī)程： | T1，E1，J1 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 304-LBGA |
| 供應(yīng)商設(shè)備封裝： | 304-TBGA（31x31） |
| 包裝： | 托盤 |
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XRT83L314
14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
7
TRANSMITTER SECTION
NAME
PIN
TYPE
DESCRIPTION
TxON
AC20
I
Transmit On/Off Input
Upon power up, the transmitters are powered off. Turning the transmitters On
or Off is selected through the microprocessor interface by programming the
appropriate channel register if this pin is pulled "High". If the TxON pin is
pulled "Low", all 14 transmitters are powered off.
NOTE:
TxON is ideal for redundancy applications.
See the Redundancy
Applications Section of this datasheet for more details.
Internally
pulled "Low" with a 50K
resistor.
DMO
Y4
O
Digital Monitor Output (Global Pin for All 14-Channels)
When no transmit output pulse is detected for more than 128 TCLK cycles on
one of the 14-channels, the DMO pin will go "High" for a minimum of one TCLK
cycle. DMO will remain "High" until the transmitter sends a valid pulse.
NOTE: This pin is for redundancy applications to initiate an automatic switch to
the backup card. For individual channel DMO, see the register map.
TCLK13
TCLK12
TCLK11
TCLK10
TCLK9
TCLK8
TCLK7
TCLK6
TCLK5
TCLK4
TCLK3
TCLK2
TCLK1
TCLK0
Y16
Y17
AC18
D16
C17
A19
B16
D7
A3
B5
B6
AC6
AC5
AC7
I
Transmit Clock Input
TCLK is the input facility clock used to sample the incoming TPOS/TNEG data.
If TCLK is absent, pulled "Low", or pulled "High", the transmitter outputs at
TTIP/TRING can be selected to send an all ones or an all zero signal by pro-
gramming TCLKCNL in the appropriate global register. TPOS/TNEG data can
be sampled on either edge of TCLK selected by TCLKE in the appropriate glo-
bal register.
NOTE: TCLKE is a global setting that applies to all 14 channels.
TPOS13
TPOS12
TPOS11
TPOS10
TPOS9
TPOS8
TPOS7
TPOS6
TPOS5
TPOS4
TPOS3
TPOS2
TPOS1
TPOS0
AB17
AA18
AB18
A18
D17
B19
A17
B7
C4
B4
D6
AB6
AA6
Y8
I
TPOS/TDATA Input
Transmit digital input pin. In dual rail mode, this pin is the transmit positive
data input. In single rail mode, this pin is the transmit non-return to zero (NRZ)
data input.
NOTE: Internally pulled "Low" with a 50K
resistor.
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