If the LIU has been conf" />
參數(shù)資料
型號: XRT75VL00DIV
廠商: Exar Corporation
文件頁數(shù): 82/92頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 1CH 52TQFP
標準包裝: 96
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 52-LQFP
供應商設備封裝: 52-TQFP(10x10)
包裝: 托盤
XRT75VL00D
78
REV. 1.0.4
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
If the LIU has been configured to operate in the Hardware Mode
Then the user should tie the (SR/DR*) pin to "High".
c. Configure each of the channels within the LIU to operate in the SONET De-Sync Mode
The user can accomplish this by executing either of the following steps.
If the LIU has been configured to operate in the Host Mode.
Then the user should set Bit D2 (JA0) to "0" and Bit D0 (JA1) to "1", within the Jitter Attenuator Control
Register, as depicted below.
If the LIU has been configured to operate in the Hardware Mode
Then the user should tie pin 44 (JA0) to a logic "HIGH" and pin 42 (JA1) to a logic "LOW".
Once the user accomplishes either of these steps, then the Jitter Attenuator (within the LIU) will be configured
to operate with a very narrow bandwidth.
d. Configure the Jitter Attenuator (within each of the channels) to operate in the Transmit Direction.
The user can accomplish this by executing either the following steps.
If the LIU has been configured to operate in the Host Mode.
Then the user should be Bit D1 (JATx/JARx*) to "1", within the Jitter Attenuator Control Register, as depicted
below.
CHANNEL CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X06
CHANNEL 1 ADDRESS LOCATION = 0X0E
CHANNEL 2 ADDRESS LOCATION = 0X16
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unused
PRBS Enable
Ch_n
RLB_n
LLB_n
E3_n
STS-1/
DS3_n
SR/DR_n
R/O
R/W
0
1
JITTER ATTENUATOR CONTROL REGISTER - (CHANNEL 0 ADDRESS LOCATION = 0X07
CHANNEL 1 ADDRESS LOCATION = 0X0F
CHANNEL 2 ADDRESS LOCATION = 0X17
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unused
SONET APS
Recovery
Time
DisableCh_n
JA RESET
Ch_n
JA1 Ch_n
JA in Tx Path
Ch_n
JA0 Ch_n
R/O
R/W
0
1
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