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ZL50050GAC Datasheet(PDF) 3 Page - Zarlink Semiconductor Inc |
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ZL50050GAC Datasheet(HTML) 3 Page - Zarlink Semiconductor Inc |
3 / 94 page ZL50050 Data Sheet 3 Zarlink Semiconductor Inc. Device Overview The ZL50050 has two data ports, the Backplane and the Local port. Both the Backplane and Local ports have two independent modes of operation, either 16 input and 16 output streams operated at 2.048 Mbps, 4.096 Mbps, 8.192 Mbps or 16.384 Mbps, in any combination, or 8 input and 8 output streams operated at 32.768 Mbps. The ZL50050 contains two data memory blocks (Backplane and Local) to provide the following switching path configurations: • Input-to-Output Unidirectional, supporting 8 K x 8 K switching • Backplane-to-Local Bi-directional, supporting 4 K x 4 K data switching, • Local-to-Backplane Bi-directional, supporting 4 K x 4 K data switching, • Backplane-to-Backplane Bi-directional, supporting 4 K x 4 K data switching. • Local-to-Local Bi-directional, supporting 4 K x 4 K data switching. The device contains two connection memory blocks, one for the Backplane output and one for the Local output. Data to be output on the serial streams may come from either of the data memories (Connection Mode) or directly from the connection memory contents (Message Mode). In Connection Mode, the contents of the connection memory define, for each output stream and channel, the source stream and channel (stored in data memory) to be switched. In Message Mode, microprocessor data can be written to the connection memory for broadcast on the output streams on a per channel basis. This feature is useful for transferring control and status information to external circuits or other ST-BUS devices. The device uses a master frame pulse (FP8i) and master clock (C8i) to define the input frame boundary and timing for both the Backplane port and the Local port. The device will automatically detect whether an ST-BUS or a GCI- Bus style frame pulse is being used. There is a two-frame delay from the time RESET is de-asserted to the establishment of full switch functionality. During this period, the input frame pulse format is determined before switching begins. The device provides FP8o, FP16o, C8o and C16o outputs to support external devices connected to the outputs of the Backplane and Local ports. A non-multiplexed Motorola microprocessor port allows programming of the various device operation modes and switching configurations. The microprocessor port provides access for Register read/write, Connection Memory read/write and Data Memory read-only operations. The port has a 15-bit address bus, 16-bit data bus and 4 control signals. The microprocessor may monitor channel data in the Backplane and Local data memories. The mandatory requirements of the IEEE-1149.1 (JTAG) standard are fully supported via a dedicated test port. The ZL50050 is available in one package: • a 15 mm x 15 mm body, 1mm ball-pitch, 196-PBGA. |
Similar Part No. - ZL50050GAC |
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Similar Description - ZL50050GAC |
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