REV. 1.0.1 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC AG25 LOSTTL_R I TTL Loss of Optical Carrier Input - Redundant Receive ST" />
參數(shù)資料
型號： XRT94L31IB-L
廠商： Exar Corporation
文件頁數(shù)： 35/133頁
文件大?。?/td> 0K
描述： IC MAPPER DS3/E3/STS-1 504TBGA
標準包裝： 24
應用： 網(wǎng)絡切換
接口： 總線
電源電壓： 3.14 V ~ 3.47 V
封裝/外殼： 504-LBGA
供應商設備封裝： 504-TBGA（35x35）
包裝： 托盤
安裝類型： 表面貼裝
XRT94L31
13
REV. 1.0.1
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
AG25
LOSTTL_R
I
TTL
Loss of Optical Carrier Input - Redundant Receive STS-3/STM-1
PECL Interface - TTL Input:
If the user is using the Optical Transceiver that contains an LOS (or Sig-
nal Detect) output that is of the CMOS/TTL format, then connect this
LOS output signal to this input pin of the XRT94L31.
Configure the LOSTTL_R input pin to either an active-low or an active-
high signal, by pulling the LOSPECL_R input pin to the appropriate level
as described below.
If this input pin is pulled to the appropriate state such that LOS is TRUE,
then all of the following events will happen.
The Redundant Receive STS-3 TOH Processor block wil declare the
Loss of Optical Carrier condition
The Redundant Receive STS-3/STM-1 Line Interface block will declare
the LOS_Detect condition.
NOTE: If this input pin is pulled to the appropriate state such that LOS is
TRUE, this (by itself) will NOT cause the Redundant Receive
STS-3 TOH Processor block to declare the LOS defect
condition.
PIN DESCRIPTION OF THE XRT94L31 (REV. B)
PIN #
SIGNAL NAME
I/O
TYPE
DESCRIPTION
Description of LOSTTL_R
Setting this input pin "low"
configures the Redundant
Receive Line Interface block
to declare the "LOS_Detect"
condition.
Setting this input pin "high"
configures the Redundant
Receive Line Interface block
to declare the "LOS_Detect"
condition.
LOSTTL_R
Active-Low/
Active-High
Active-Low
Active-High
LOSPECL_R
GND
VDD
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