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SPC5643LF2VMM8 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
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SPC5643LF2VMM8 Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 136 page Introduction MPC5643L Microcontroller Data Sheet, Rev. 8.1 Freescale Semiconductor 7 1.5.1 High-performance e200z4d core The e200z4d Power Architecture® core provides the following features: • 2 independent execution units, both supporting fixed-point and floating-point operations • Dual issue 32-bit Power Architecture technology compliant — 5-stage pipeline (IF, DEC, EX1, EX2, WB) — In-order execution and instruction retirement • Full support for Power Architecture instruction set and Variable Length Encoding (VLE) — Mix of classic 32-bit and 16-bit instruction allowed — Optimization of code size possible • Thirty-two 64-bit general purpose registers (GPRs) • Harvard bus (32-bit address, 64-bit data) — I-Bus interface capable of one outstanding transaction plus one piped with no wait-on-data return — D-Bus interface capable of two transactions outstanding to fill AHB pipe • I-cache and I-cache controller — 4 KB, 256-bit cache line (programmable for 2- or 4-way) • No data cache • 16-entry MMU • 8-entry branch table buffer • Branch look-ahead instruction buffer to accelerate branching • Dedicated branch address calculator • 3 cycles worst case for missed branch • Load/store unit — Fully pipelined — Single-cycle load latency — Big- and little-endian modes supported — Misaligned access support — Single stall cycle on load to use • Single-cycle throughput (2-cycle latency) integer 32 × 32 multiplication • 4 – 14 cycles integer 32 × 32 division (average division on various benchmark of nine cycles) • Single precision floating-point unit — 1 cycle throughput (2-cycle latency) floating-point 32 × 32 multiplication — Target 9 cycles (worst case acceptable is 12 cycles) throughput floating-point 32 × 32 division — Special square root and min/max function implemented • Signal processing support: APU-SPE 1.1 — Support for vectorized mode: as many as two floating-point instructions per clock • Vectored interrupt support • Reservation instruction to support read-modify-write constructs • Extensive system development and tracing support via Nexus debug port 1.5.2 Crossbar switch (XBAR) The XBAR multi-port crossbar switch supports simultaneous connections between four master ports and three slave ports. The crossbar supports a 32-bit address bus width and a 64-bit data bus width. The crossbar allows four concurrent transactions to occur from any master port to any slave port, although one of those transfers must be an instruction fetch from internal flash memory. If a slave port is simultaneously requested by more than one master |
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