SAN JOSE --Toshiba Corp. today announced availability of a new RISC-based series of embedded 64-bit processors with a range of integrated peripherals. The series is based on a 64-bit processor architecture from MIPS Technologies and intended to be an alternative to custom-designed ASICs.
"Compared to an ASIC, the TX4927 reduces hardware design time and risk, and compared to a multi-chip approach, it saves board space and increases performance," said Jim Smith, business development director for Toshiba America Electronic Components Inc. He said Toshiba is marketing the TX4927 as a fast 64-bit pipelined RISC solution for systems needing an upgrade path from 32-bit processing.
The 64-bit processor is a follow-on design to Toshiba's 32-bit TX3927 chip. The new processor is upward compatible with the 32-bit RISC chip, said Toshiba. The 64-bit core incorporates a memory management unit (MMU), which uses a 48-double entry translation lookaside buffer (TLB) with fourway set-associative 32-kilobyte instruction and data caches.
The integrated RISC processor contains an SDRAM memory controller that is capable of handling four channels of registered/non-registered DIMM SDRAM (at speeds up to 100 MHz) in configurations up to 2 gigabytes. A PCI bus controller supports either four 33-MHz or two 66-MHz bus masters.
The TX4927 processor comes in a 420-lead ball-grid array (BGA) with 1.27-mm contact pitch. In quantities of 10,000, a 200-MHz TX4927 is priced at $35 each.