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CYF0036V18L-133BGXI Datasheet(PDF) 1 Page - Cypress Semiconductor |
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CYF0036V18L-133BGXI Datasheet(HTML) 1 Page - Cypress Semiconductor |
1 / 29 page 18/36/72 Mbit Programmable FIFOs CYF0018V, CYF0036V CYF0072V Cypress Semiconductor Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 001-53687 Rev. *H Revised March 31, 2011 18/36/72/144 Mbit Programmable FIFOs Features ■ Memory organization ❐ Industry's largest first in first out (FIFO) memory densities: 18 Mbit, 36 Mbit, and 72 Mbit ❐ Selectable memory organization: ×9, ×12, ×16, ×18, ×20, ×24, ×32, ×36 ■ Up to 133-MHz clock operation ■ Unidirectional operation ■ Independent read and write ports ❐ Supports simultaneous read and write operations ❐ Reads and writes operate on independent clocks up to a maximum ratio of two enabling data buffering across clock domains ❐ Supports multiple I/O voltage standard: low voltage comple- mentary metal oxide semiconductor (LVCMOS) 3.3 V and 1.8 V voltage standards. ■ Input and output enable control for write mask and read skip operations ■ Mark and retransmit: resets read pointer to user marked position ■ Empty, full, half-full, and programmable almost-empty and almost-full status flags with preselected offsets ■ Flow-through mailbox register to send data from input to output port, bypassing the FIFO sequence ■ Configure programmable flags and registers through serial or parallel modes ■ Separate serial clock (SCLK) input for serial programming ■ Master reset to clear entire FIFO ■ Partial reset to clear data but retain programmable settings ■ Joint test action group (JTAG) port provided for boundary scan function ■ Industrial temperature range: –40 °C to +85 °C Functional Description The Cypress programmable FIFO family offers the industry’s highest-density programmable FIFO memory device. It has independent read and write ports, which can be clocked up to 133 MHz. User can configure input and output bus sizes. The maximum bus size of 36 bits enables a maximum data throughput of 4.8 Gbps. The read and write ports can support multiple I/O voltage standards. The user-programmable registers enable user to configure the device operation as desired. The device also offers a simple and easy-to-use interface to reduce implementation and debugging efforts, improve time-to-market, and reduce engineering costs. This makes it an ideal memory choice for a wide range of applications including multiprocessor interfaces, video and image processing, networking and telecommunications, high-speed data acquisition, or any system that needs buffering at very high speeds across different domains. As implied by the name, the functionality of the FIFO is such that the data is read out of the read port in the same sequence in which it was written into the write port. The data is sequentially written into the FIFO from the write port. If the writes and inputs are enabled, the data on the write port gets written into the device at the rising edge of the write clock. Enabling the reads and outputs fetches data on the read port at every rising edge of the read clock. Both reads and writes can occur simultaneously at different speeds provided the ratio between read and write clock is in the range of 0.5 to 2. Appropriate flags are set whenever the FIFO is empty, full, half-full, almost-full, or almost-empty. The device also supports mark and retransmit of data, and a flow-through mailbox register. All product features and specs are common to all densities ( CYF0072V, CYF0036V, and CYF0018V) unless otherwise specified. All descriptions are given assuming the device is CYF0072V operated in ×36 mode. They hold good for other densities (CYF0036V, and CYF0018V) and all port sizes ×9, ×12, ×16, ×18, ×20, ×24 and ×32 unless otherwise specified. the only difference will be in the input and output bus width. Table 1 shows the part of bus with valid data from D[35:0] and Q[35:0] in ×9, ×12, ×16, ×18, ×20, ×24, ×32 and ×36 modes. |
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