参数资料
型号: XRT75R03DIV-F
厂商: Exar Corporation
文件页数: 31/135页
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 3CH 128LQFP
标准包装: 72
类型: 线路接口装置(LIU)
驱动器/接收器数: 3/3
规程: DS3,E3,STS-1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-LQFP(14x20)
包装: 托盘
XRT75R03D
122
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
REV. 1.0.4
If the XRT75R03D has been configured to operate in the Host Mode
The user can accomplish this by setting Bit 0 (SR/DR*), within the each of the "Channel Control" Registers to
1, as illustrated below.
If the XRT75R03D has been configured to operate in the Hardware Mode
Then the user should tie pin 65 (SR/DR*) to "High".
c.
Configure each of the three channels within the XRT75R03D to operate in the SONET De-Sync Mode
The user can accomplish this by executing either of the following steps.
If the XRT75R03D has been configured to operate in the Host Mode.
Then the user should set Bit D2 (JA1) to "0" and Bit D0 (JA0) to "1", within the Jitter Attenuator Control
Register, as depicted below.
If the XRT75R03D 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 XRT75R03D) will be
configured to operate with a very narrow bandwidth.
d.
Configure the Jitter Attenuator (within each of three three channels) to operate in the Transmit Direction.
The user can accomplish this by executing either the following steps.
If the XRT75R03D 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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