Abstract: ApplicaTIon Note 387 describes the use of the Dallas Semiconductor / Maxim DS2148 / DS21348 as a T1 or E1 repeater. A simple circuit diagram shows typical connecTIons. ConfiguraTIons for Hardware Mode and Software Mode are also provided.
IntroducTIonThis application note describes the register settings for Dallas Semiconductor's DS2148 and DS21348 (E1 / T1 / J1 line interface units) as a repeater for T1 or E1 operation. This can be accomplished with the device in either hardware or software mode.
The receive sensitivity for these two LIUs is programmable and is as much as -36dB for T1 applications and -43dB for E1 applications.
To simplify the design, it is recommended to use a 2.048MHz oscillator and use the internal register settings of the DS2148 and the DS21348 to convert the MCLK to 1.544MHz for T1 applications.
Figure 1. Typical T1 / E1 repeater application.
The configuration settings of the DS2148 or the DS21348 in hardware mode are:
The configuration settings of the DS2148 or the DS21348 in software mode are:
HP series High power high-voltage power supply is the first generation high-power HVPS designed by iDealTek-Electronics, adopting the standard 19-inch chassis structure to facilitate the integrated installation of high-voltage systems. The output power ranges from 5kW to 15kW (single unit), with the output voltage ranging from 1KV to 60kV.
HPS series ultra-high-power high-voltage power supplies are developed on the basis of HP series using internal high-power high voltage modules in parallel built in 19-inch standard cabinet with control, inverter, high voltage transformer split design structure, output power ranges from 50KW to 300KW with output voltage up to 300KV. The power supplies adopt a mixed cooling method of air cooling of the control part, water cooling and oil cooling of the main power unit. The internal module redundancy technology and perfect protection circuit ensure the excellent reliability of the power supply under high-voltage and high-power output.
Compared with the traditional linear high power High Voltage Power Supplies, our high-power high voltage power supplies of IGBT-based topology can achieve output power beyond that of the linear high voltage power supplies and also break through the ceiling where the output voltage cannot exceed tens of KV, besides the same electronic characteristics of high precision low ripple and high stability as the linear high-voltage power supplies, our high power high voltage power supplies are also featured for high efficiency, fast response characteristics that linear high voltage power supply can't match.
At present, the production of high power high voltage power supplies is difficult and the applications are diverse and scattered. Basically, they are mainly customized. The industries that have been aiding include mining gravel, ultra-high-power capacitor charging, electron beam melting, electron gun, ion acceleration, ion implantation and other cutting-edge industries.
IntroducTIonThis application note describes the register settings for Dallas Semiconductor's DS2148 and DS21348 (E1 / T1 / J1 line interface units) as a repeater for T1 or E1 operation. This can be accomplished with the device in either hardware or software mode.
The receive sensitivity for these two LIUs is programmable and is as much as -36dB for T1 applications and -43dB for E1 applications.
To simplify the design, it is recommended to use a 2.048MHz oscillator and use the internal register settings of the DS2148 and the DS21348 to convert the MCLK to 1.544MHz for T1 applications.
Figure 1. Typical T1 / E1 repeater application.
The configuration settings of the DS2148 or the DS21348 in hardware mode are:
| HARDWARE MODE SETTINGS FOR T1 | HARDWARE MODE SETTINGS FOR E1 |
| MCLK = 2.048MHz | MCLK = 2.048MHz |
| BIS1 = 1, BIS0 = 1 | BIS1 = 1, BIS0 = 1 |
| CES = 0 | CES = 0 |
| DJA = 0 or 1 (application dependent) | DJA = 0 or 1 (application dependent) |
| HBE = 1 | HBE = 1 |
| JAS = 0 or 1 (application dependent) | JAS = 0 or 1 (application dependent) |
| NRZE = 0 | NRZE = 0 |
| TPD = 0 | TPD = 0 |
| L2 = L1 = L0 = 0 | L2 / L1 / L0 (application dependent) |
| TX1 = 0, TX0 = 0 | TX1 = 0, TX0 = 0 |
| LOOP1 = 0, LOOP0 = 0 | LOOP1 = 0, LOOP0 = 0 |
| EGL = 1, ETS = 1 (limited long haul) EGL = 0, ETS = 1 (long haul) | EGL = 0, ETS = 0 (short haul) EGL = 1, ETS = 0 (long haul) |
| MM1 = 0, MM0 = 0 | MM1 = 0, MM0 = 0 |
| RT1 = 1, RT0 = 0 (internal Rx side, 100Ω enabled) | RT1 = 0, RT0 = 1 (internal Rx side, 120Ω enabled) RT1 = 1, RT0 = 1 (internal Rx side, 75Ω enabled) |
| JAMUX = 1, ETS = 1 | JAMUX = 1, ETS = 0 |
The configuration settings of the DS2148 or the DS21348 in software mode are:
| SOFTWARE MODE REGISTER SETTINGS FOR T1 | SOFTWARE MODE REGISTER SETTINGS FOR E1 | ||
| MCLK = 2.048MHz | MCLK = 2.048MHz | ||
| CCR1 (00H) | CCR1.7 = 1 CCR1.6 = 0 CCR1.3 = 1 CCR1.1 = 1 | CCR1 (00H) | CCR1.7 = 0 CCR1.6 = 0 CCR1.3 = 1 CCR1.1 = 1 |
| CCR2 (01H) | CCR2.3 = 1 CCR2.2 = 1 CCR2.1 = 0 CCR2.0 = 0 | CCR2 (01H) | CCR2.3 = 1 CCR2.2 = 1 CCR2.1 = 0 CCR2.0 = 0 |
| CCR4 (03H) | CCR4.7 = CCR4.6 = CCR4.5 = 0 CCR4.1 (application dependent) CCR4.0 = 0 | CCR4 (03H) | CCR4.7, CCR4.6, and CCR4.5 (application dependent) CCR4.1 (application dependent) CCR4.0 = 0 |
| CCR5 (04H) | CCR5.5 = 0, CCR5.4 = 0 CCR5.1 = 1, CCR5.0 = 0 (internal Rx side, 100Ω enabled) | CCR5 (04H) | CCR5.5 = 0, CCR5.4 = 0 CCR5.1 = 0, CCR5.0 = 1 (internal RX side, 120Ω enabled) CCR5.1 = 1, CCR5.0 = 1 (internal Rx side, 75Ω enabled) |
High Power High Voltage Power Supplies
The High-power High Voltage Power supply is a customized high-voltage power supply family developed by iDealTek-Electronics based on the design and development of IGBT switching elements.
HP series High power high-voltage power supply is the first generation high-power HVPS designed by iDealTek-Electronics, adopting the standard 19-inch chassis structure to facilitate the integrated installation of high-voltage systems. The output power ranges from 5kW to 15kW (single unit), with the output voltage ranging from 1KV to 60kV.
HPS series ultra-high-power high-voltage power supplies are developed on the basis of HP series using internal high-power high voltage modules in parallel built in 19-inch standard cabinet with control, inverter, high voltage transformer split design structure, output power ranges from 50KW to 300KW with output voltage up to 300KV. The power supplies adopt a mixed cooling method of air cooling of the control part, water cooling and oil cooling of the main power unit. The internal module redundancy technology and perfect protection circuit ensure the excellent reliability of the power supply under high-voltage and high-power output.
Compared with the traditional linear high power High Voltage Power Supplies, our high-power high voltage power supplies of IGBT-based topology can achieve output power beyond that of the linear high voltage power supplies and also break through the ceiling where the output voltage cannot exceed tens of KV, besides the same electronic characteristics of high precision low ripple and high stability as the linear high-voltage power supplies, our high power high voltage power supplies are also featured for high efficiency, fast response characteristics that linear high voltage power supply can't match.
At present, the production of high power high voltage power supplies is difficult and the applications are diverse and scattered. Basically, they are mainly customized. The industries that have been aiding include mining gravel, ultra-high-power capacitor charging, electron beam melting, electron gun, ion acceleration, ion implantation and other cutting-edge industries.
High Power HV Power Supplies, High Power High-voltage Power Supplies, High-Power High-voltage Power Supplies, High-Power High Voltage Power Supplies, High-Power HV Power Supplies
Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com