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MFG:SIEMENS
Part Number: PSB21911
MFG: SIEMENS
Description: The PSB 21911, IEC-Q TE Version 5.2, is a specific derivative of the PEB 2091, IEC-Q for terminal and ...
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PSB21911
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DataSheet
General Description
PSB21911 General Description
The PSB 21911, IEC-Q TE Version 5.2, is a specific derivative of the PEB 2091, IEC-Q for terminal and small PBX applications. It features all necessary functions required for NTs and terminal applications like PC add-on cards and terminal adapters.
In stand-alone mode the PSB 21911 IEC-Q TE Version 5.2 can be used fully pin compatible to IEC-Q V4.4 and former versions. In µP mode it offers a parallel or serial microprocessor interface.
The Processor Interface (PI) of the IEC-Q TE V 5.2 establishes the access of a microprocessor between U-interface and IOM-2. It's main function is illustrated in In µP mode B channels, D channel, C/I codes and Monitor commands can either be passed between the U-transceiver and IOM-2 directly, or they can be looped through the µP via the PI. Any selection of "passed" or "looped" channels can be programmed via a control register.
The µP-interface mode is enabled by setting the pin PMODE to "1". This pin was not to be connected in older versions of the IEC-Q. Its internal pull down resistor selects the stand-alone mode, if the pin is left open.
In stand-alone mode the IEC-Q TE is controlled exclusively via the IOM-2 interface and mode selection pins.
PSB21911 Maximum Ratings
|
Parameter |
Symbol |
Limit Values |
Units |
| Supply voltage |
VDD |
0.3 < VDD < 7.0 |
V |
| Input voltage |
VI |
0.3 < VI < VDD + 0.3 (max. 7) |
V |
| Output voltage |
VO |
0.3 < VO < VDD + 0.3 (max 7) |
V |
| Max. voltage applied at U-Interface |
VS |
0.3 < VS < VDD + 0.3 (max. 7) |
V |
| Max. voltage between GNDA1 (GNDA2) and GNDD |
VS |
± 250 |
mV |
| Storage temperature |
Tstg |
65 to 125 |
|
| Ambient temperature PSB 21911 PSF 21911 |
TA TA |
0 to 70 40 to 85 |
|
| Thermal resistance (system-air) (system-case) |
Rth SA Rth SC |
40 9 |
K/W K/W |
Exposure to conditions beyond those indicated in the recommended operational conditions of this
specification may affect device reliability.
This is a stress rating only and functional operation of the device under those conditions or at any
other condition beyond those indicated in the operational conditions of this specification is not implied.
It is not implied, that more than one of those conditions can be applied simultaneously.
PSB21911 Features
• ISDN U-transceiver with IOM-2 and optional microprocessor interface
• Compatible to NT modes and TE mode of PEB 2091 IEC-Q V5.1
• Perfectly suited for terminal and TA applications
• U-interface (2B1Q) conform to ANSI T1.601, ETSI ETR 080 and CNET ST/LAA/ELR/DNP/822:
Meets all transmission requirements on all ANSI, ETSI and CNET loops with margin
Conform to British Telecom's RC7355E
Compliant with ETSI 10ms micro interruptions
• IOM-2 interface for connection of e.g. ISAC-S, SICOFI-2/4TE, ARCOFI, ITAC, HSCX-TE, ISAR, IPAC, 3PAC
• Pin compatible to version 4.4 in the P-LCC-44 package In µP mode:
• Parallel or serial microprocessor interface and watchdog
• µP access to B-channels, D-channel and intercommunication channels
• µP access to IOM-2 Monitor-channels and C/I-channels
• Adjustable microcontroller clock source between 0.96MHz and 7.68MHz
• Selection between Bit clock (BCL) and Data clock (DCL)
• Supports synchronization of basestations in cordless applications (e.g. RITL)
• Supports D-channel arbitration with ELIC linecard (e.g. PBX) In all modes:
• Single 5 Volt power supply
• Low power CMOS technology with power down mode
• Compatible to NT modes and TE mode of PEB 2091 IEC-Q V5.1
• Perfectly suited for terminal and TA applications
• U-interface (2B1Q) conform to ANSI T1.601, ETSI ETR 080 and CNET ST/LAA/ELR/DNP/822:
Meets all transmission requirements on all ANSI, ETSI and CNET loops with margin
Conform to British Telecom's RC7355E
Compliant with ETSI 10ms micro interruptions
• IOM-2 interface for connection of e.g. ISAC-S, SICOFI-2/4TE, ARCOFI, ITAC, HSCX-TE, ISAR, IPAC, 3PAC
• Pin compatible to version 4.4 in the P-LCC-44 package In µP mode:
• Parallel or serial microprocessor interface and watchdog
• µP access to B-channels, D-channel and intercommunication channels
• µP access to IOM-2 Monitor-channels and C/I-channels
• Adjustable microcontroller clock source between 0.96MHz and 7.68MHz
• Selection between Bit clock (BCL) and Data clock (DCL)
• Supports synchronization of basestations in cordless applications (e.g. RITL)
• Supports D-channel arbitration with ELIC linecard (e.g. PBX) In all modes:
• Single 5 Volt power supply
• Low power CMOS technology with power down mode
PSB21911 Connection Diagram
PSB21911
PDF/DataSheet Download
- Datasheet: PSB21911
- File Size: 1435044 KB
- Manufacturer: SIEMENS [Siemens Semiconductor Group]
- Click here to Download
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