(PDF) SA8702 Datasheet - BLOCK MODE TIME SLOT ALLOCATION CIRCUIT

Número de pieza	SA8702
Descripción	BLOCK MODE TIME SLOT ALLOCATION CIRCUIT
Fabricantes	Sames
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No Preview Available ! sames SA8702 SA8702 BLOCK MODE TIME SLOT ALLOCATION CIRCUIT DESCRIPTION The SA8702 (BMTSAC) is a Block Mode Time Slot Allocation Circuit. The device is used to generate 8 consecutive timeslots in one of 4 blocks in a 32 time-slot PCM system. Each timeslot pulse is 8 BLCK cycles long. BCLK is the 2,048 station clock provided by the system. An active MRST will disable all outputs until a valid XSYNC input is recognised. The output TSX is delayed by half a cycle and indicates that one of 8 timeslots is currently active. There are 4 possible modes of operation, selectable by means of the BL0 and BL1 pins (See Table 1). APPLICATIONS s PCM Switching Systems s PCM Transmission Systems s Subscriber Multiplex Equipment s PBX Systems PIN CONNECTIONS All inputs and outputs are C-MOS compatible. All outputs are push-pull with the exception of TSX which is open drain. The inputs MRST and BCLK are Schmitt Trigger. Inputs BL0 and BL1 have pull-ups. (See figure 1). SA8702 sames 1 Figure 1. 02.02.93 1 page TIMING DIAGRAM SA8702 sames 5 5 Page

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PDF SA8702 Data sheet ( Hoja de datos )