What this part is — synchronous SRAM for cache and buffer
The CY7C0850V-133AC is a 1Mbit synchronous SRAM organized as 32K x 36 bits. It runs on a 133 MHz clock with a 4.4 ns asynchronous access time, using a parallel interface.
The 133 MHz clock drives the synchronous burst pipeline, so the part can sustain back-to-back reads at that rate once the initial access completes. The 4.4 ns access time covers the first random read — that's the number to budget for cache miss or tag lookup latency. Compared to the CYD01S18V-167BBC, which runs at 167 MHz with a 4 ns access in a 64K x 18 organization, this part trades a slightly slower clock for a wider 36-bit data word, which simplifies bus width matching in 32-bit or 36-bit systems.