The CY7C4271V-10JC is listed as Obsolete by Infineon Technologies.
288K synchronous FIFO at 100 MHz
This is a synchronous FIFO from the CY7C series, organized as 32K x 9 bits (288K total). The 9-bit width includes a parity bit per word — useful for data integrity in buffered pipelines where the extra bit carries a check or tag.
32-PLCC package and board-fit
Housed in a 32-lead PLCC with J-leads (32-LCC), the supplier device package is 32-PLCC measuring 11.43 x 13.97 mm. Surface-mount only — the J-lead footprint is standard for PLCC sockets or direct solder.
Feature set: programmable flags, no retransmit
Supports programmable flags for almost-empty/almost-full thresholds, which allows the system to pace reads and writes before the FIFO hits its boundaries. No FWFT (First-Word Fall-Through) and no retransmit capability — the read pointer advances on each read clock, and there is no mechanism to rewind without a full reset. Expansion is supported in both depth and width, so multiple devices can cascade for larger buffers.