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The Intersil HSP45240 is a high speed Address Sequencer which provides specialized addressing for functions like FFTs, 1-D and 2-D filtering, matrix operations, and image manipulation. The sequencer supports block oriented addressing of large data sets up to 24-bits at clock speeds up to 50MHz.

Specialized addressing requirements are met by using the onboard 24 x 24 crosspoint switch. This feature allows the mapping of the 24 address bits at the output of the address generator to the 24 address outputs of the chip. As a result, bit reverse addressing, such as that used in FFTs, is made possible. A single chip solution to read/write addressing is also made possible by configuring the HSP45240 as two 12-bit sequencers. To compensate for system pipeline delay, a programmable delay is provided on 12 of the address outputs.

The HSP45240 is manufactured using an advanced CMOS process, and is a low power fully static design. The configuration of the device is controlled through a standard microprocessor interface and all inputs/outputs, with the exception of clock, are TTL compatible.

Key Features

• Block Oriented 24-Bit Sequencer
• Configurable as Two Independent 12-Bit Sequencers
• 24 x 24 Crosspoint Switch
• Programmable Delay on 12 Outputs
• Multi-Chip Synchronization Signals
• Standard µP Interface
• 100pF Drive on Outputs
• DC to 50MHz Clock Rate

Applications

• 1-D, 2-D Filtering
• Pan/Zoom Addressing
• FFT Processing
• Matrix Math Operations