參數資料
型號: DS26303GN-75
廠商: Maxim Integrated Products, Inc.
英文描述: 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
中文描述: 3.3,E1/T1/J1,短途,八線路接口單元
文件頁數: 64/97頁
文件大?。?/td> 966K
代理商: DS26303GN-75
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
64 of 97
6.7 G.772 Monitor
In this application, only seven LIUs are functional and one LIU is used for nonintrusive monitoring of input and
output of the other seven channels. Channel 1 is used for monitoring channels 2 to 8. G.772 monitoring is
configured by the
GMC
register (see
Table 5-9
). While monitoring with channel 1, the device can be configured in
remote loopback and the monitored signal can be output on TTIP1 and TRING1.
6.8 Loopbacks
The DS26303 provides four loopbacks for diagnostic purposes: analog loopback, digital loopback, remote
loopback, and dual loopback.
6.8.1 Analog Loopback
The analog output of the transmitter TTIP and TRING is looped back to RTIP and RRING of the receiver. Data at
RTIP and RRING is ignored in analog loopback. See
Figure 6-8
.
Figure 6-8. Analog Loopback
Line
Driver
H D B 3 /
B 8 Z S
E n c o d e r
O p t i o n a l
J i t t e r
A t t e n u a t o r
T r a n s m it
D ig it a l
T r a n s m it
A n a lo g
TCLK
TPOS
TNEG
H D B 3 /
B 8 Z S
D e c o d e r
O p t i o n a l
J i t t e r
A t t e n u a t o r
R e c e iv e
D ig ita l
R e c e iv e
A n a lo g
RCLK
RPOS
RNEG
Rtip
Rring
6.8.2 Digital Loopback
The transmit system data TPOS, TNEG, and TCLK are looped back to output on RCLK, RPOS, and RNEG. The
data input at TPOS and TNEG is encoded and output on TTIP and TRING. Signals at RTIP and RRING are
ignored. This loopback is conceptually shown in
Figure 6-9
.
相關PDF資料
PDF描述
DS26303L-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303L-75 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303LN-120 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
DS26303LN-75 3.3V, E1/T1/J1, Short-Haul, Octal Line Interface Unit
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相關代理商/技術參數
參數描述
DS26303L-120 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-120+ 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-120+A3 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-120A3 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
DS26303L-75 功能描述:電信線路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray