参数资料
型号: DS26334GN
英文描述: 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit
中文描述: 3.3伏,16路,E1/T1/J1短,长途线路接口单元
文件页数: 20/115页
文件大小: 756K
代理商: DS26334GN
DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
20 of 115
Figure 5-4. Interrupt Handling Flow Diagram
Interrupt Allowed
Interrupt Conditon
Exist
Read Interrupt Status
Register
Read Corresponding Status
Register (Optional)
Service the Interrupt
No
Yes
5.2 Power-Up and Reset
Internal Power_On_Reset circuitry generates a reset during power-up. All Registers are reset to the default values.
Writing to the Software Reset Register generates at least 1 s reset cycle, which has the same effect as the power-
up reset.
The DS26334 can be reset by a low going pulse on the RSTB pin (see
Table 4-1
). A reset can also be performed in
software by writing any value to the
SWR
register.
5.3 Master Clock
The DS26334 requires 2.048MHz ±50ppm or 1.544MHz ±50ppm or multiple thereof. The receiver uses the MCLK
as a reference for clock recovery, jitter attenuation and generating RCLK during LOS. The AIS Transmission uses
MCLK for Transmit All Ones Condition. See register
MC
to set desired incoming frequency. When the PLLE bit is
set, the master clock adapter will generate both 2.048MHz (E1) and 1.544MHz (T1) clocks. If the PLLE bit is clear,
both internal reference clocks will track MCLK.
MCLK or RCLK can also be used to output CLKA on the LOS16 pin. Register
CCR
is used to select the clock
generated for CLKA and the TECLK. Any RCLK can also be selected as an input to the clock generator using this
same register. For a detailed description of selections available see
Figure 5-5
.
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相关代理商/技术参数
参数描述
DS26334GN+ 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26334GNA2 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26334GNA2+ 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26334GNA3 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26334GNA3+ 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short/Long Haul LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray