highlights bus interface ? bus compatible with 403ga, 403gb and 403gc ? direct-connect peripheral/sram/ rom and dram interfaces ? support for 8-, 16- and 32-bit devices ? addressing for 512mb of main storage ? external bus master support ? ieee 1149.1 (jtag) compatible interface, for test, debug and real-time trace support ? dram controller supports edo dram ? data bus parity on per byte basis ? new programmable bus modes dma controller ? four independent dma channels ? buffered, fly-by, memory-to-memory, and burst modes ? programmable for 8-, 16- and 32-bit transfers ? data chaining interrupt controller ? low latency interrupt handling (three cycles typical) ? six external interrupt inputs (five regular, one critical) ? dual level interrupt structure for robust debug power management capability ? dynamic power management and stand-by mode ? support for connections to 3.3v and 5v peripherals instruction fetch, branch and dispatch unit ? four instruction prefetch queue ? branch folding and static branch prediction ? dispatches up to two instructions per cycle memory management unit ? mmu is precache (cache tags are physical addresses) ? 8 page sizes (1k-16m by powers of 4) for efficient system memory use ? 64 entry fully associative tlb with software replacement ? 16 protection zones instruction and data caches ? separate caches: 16kb instruction, 8kb data ? two-way set-associative ? fetch-thru instruction cache ? write-back data cache timers ? 64-bit time base ? 32-bit programmable interval timer ? fixed interval timer for system maintenance ? watchdog timer for system error recovery serial port ? rs-232 serial communications ? programmable to 1.5 mb/s product description the powerpc 403gcx* 32-bit risc embedded controller is a clock- doubled design and is pin-compatible with the 403ga and 403gc. this provides an easy upgrade path when extra performance is needed. the 403gcx processor core is tightly coupled to the internal 16kb instruction and 8kb data caches, reducing overhead for data transfers to and from main storage. instruction queue logic minimizes pipeline stalls by managing branch prediction, branch folding and instruction prefetching. the high-speed multiplier can significantly improve application performance. powerpc 403gcx power consumption is minimized by a custom-designed low-power circuit library, 3.3v operation, and dynamic clocking. it is binary compatible with all ibm powerpc microprocessors and embedded controllers. the 403gcx includes an integrated mmu featuring a fully associative tlb. each entry provides a translation for a memory page, which can be one of several sizes. tlb replacement is managed by software, which can employ the optimum replacement strategy for a particular application. powerpc 403gcx embedded controller highly integrated, low cost, and easily upgradeable
? international business machines corporation 1998 printed in the united states of america 2-98 all rights reserved * indicates a trademark or registered trademark of the international business machines corporation. the information contained in this document is subject to change without notice. the products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. the information contained in this document does not effect or change ibms product spec- ifications or warranties. nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of ibm or third parties. all the information contained in this document was obtained in specific environments, and is presented as an illustration. the results obtained in other operating environ- ments may vary. the information contained in this document is provided on an as is basis. in no event will ibm be liable for any damages arising directly or indirectly from any use of the information contained in this document. ibm microelectronics division 1580 route 52, bldg. 502 hopewell junction, ny 12533-6531 the ibm home page can be found at: http://www.ibm.com the ibm microelectronics home page can be found at: http://www.chips.ibm.com *07gk10309700* gk10-3097-01 powerpc 403gcx specifications technology 0.45 m m cmos, 3 metal levels number of transistors 1.82 million max case temp. range - 40 c to 85 c signal i/os 126 power supply 3.3v 5% (supports 5v i/os) performance 112 mips (dhrystone 2.1) @ 80mhz power dissipation tc 340 mw @ 50mhz 420 mw @ 66mhz 510 mw @ 80mhz packaging 160-pin plastic quad flat pack 160-pin plastic ball grid array frequency (cpu / bus) 50/25mhz 66/33mhz 80/40mhz tc typical conditions (3.3v, 55 o c, nominal silicon) the powerpc 403gcx is supported by ibm and over 75 select third-party vendors in the powerpc embedded tools * program, offering a full range of embedded development tools, including compilers, debuggers, real-time operating systems, emulators, logic analyzers, and evaluation boards. serial port port jtag dram controller i/o controller bus interface unit sram, rom, i/o controls controls address bus data bus on-chip peripheral bus dram interrupt controller risc execution unit cache unit instruction cache unit data timers memory management unit trace port dma controller 4-channel
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