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Q67100-H8322 Datasheet(PDF) 6 Page - Siemens Semiconductor Group |
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Q67100-H8322 Datasheet(HTML) 6 Page - Siemens Semiconductor Group |
6 / 53 page Semiconductor Group 6 PEB 2045 PEF 2045 1.3 Device Overview The Siemens Memory Time Switch PEx 2045 is a monolithic CMOS circuit connecting any of 512 incoming PCM channels to any of 256 outgoing PCM channels. The on-chip connection memory is accessed via the 8-bit µP interface. The PEx 2045 is fabricated using the advanced CMOS technology from Siemens and is mounted in a P-DIP-40 or a P-LCC-44 package. Inputs and outputs are TTL-compatible. The PEx 2045 is pin and software compatible to the PEB 2040. In addition, it includes the following features: q 4096-kHz device clock q 4096-kbit/s PCM-data rate q Primary access configuration q Fast connection memory access 1.4 System Integration The main application fields for the PEx 2045 are in switches and primary access units. Figure 3 shows a non-blocking switch for 512 input and 512 output channels using only two devices. Figure 4 shows how 8 devices can be arranged to form a non-blocking 1024-channel switch. Figure 3 Memory Time Switch 16/16 for a Non-Blocking 512-Channel Switch This is possible due to the tristate capability of the PEx 2045. ITS00583 8 8 PCM OUT 2 MHz MHz 2 IN PCM 16 PEx 2045 PEx 2045 |
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