Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Toshiba Electronics Europe | Subject: TX4927
Edited by the Electronicstalk Editorial
Team on 31 July 2001
64bit processor bristles with
peripherals
Integrating a PCI controller and DMA controller with other on-chip peripherals, the 64bit TX4927 RISC MPU from Toshiba improves performance and cuts component count in a range of applications.
Integrating a PCI controller and direct memory access (DMA) controller with other on-chip peripherals, the 64bit TX4927 RISC microprocessor from Toshiba improves performance and reduces component count in the latest digital consumer applications, networking equipment, industrial control systems and other high-speed PCI designs In addition, full compatibility with Toshiba's 32bit PCI RISC processors simplifies the upgrade of existing applications that now require higher bandwidth operation
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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Toshiba's new microprocessor is based on a 0.18-micron CMOS process and uses the company's 200MHz TX49/H2 MIPS-based core.
This core offers optimised five-stage pipeline processing and a 64bit datapath, and incorporates a memory management unit (MMU) that can meet the requirements of Windows CE.
A hardware multiply accumulator (MAC) and a single/double-precision floating point unit (FPU) are also provided.
The core's instruction set supports MIPS I, II and III instructions as well as MIPS IV prefetch, multiply/add and debug instructions.
In addition to the PCI and DMA controller, peripherals integrated into the TX4927 include an SDRAM memory controller that can handle four channels of DIMM SRAM in configurations of up to 2Gbyte.
An external bus controller supports eight channels of ROM, Flash and memory-mapped devices.
The PCI controller supports either four 33MHz or two 66MHz bus masters and fully complies with revision 2.2 of the PCI Local Bus Specification.
The DMA controller supports four independent channels plus a channel for specialised PCI.
Two UART channels, three 32bit timer/counter channels and a 16bit parallel I/O port are also provided.
Supplied in a 420-lead ball-grid array package, the TX4927 processor has dimensions of just 35 x 35 x 1.7mm and is designed for a low operating voltage of 1.5V for internal CPU operation and 3.3V for I/O operations.
The device supports enhanced JTAG, allowing complete boundary-scan access inside registers and integrated peripherals, and is compatible with a variety of Toshiba and third-party development tools.
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