Integrated circuit data processor with selectable routing of dat

Details Integrated circuit data processor with selectable routing of dat Integrated circuit data processor with selectable routing of dat

1995-04-07

1997-07-01

Teska, Kevin J.

Boots, shoes, and leggings

395308, 395310, 395311, 395280, 395800, 364240, 364260, 364DIG1, G06F 1314

Patent

active

056447566

ABSTRACT:
An integrated circuit data processor (30) includes a central processing; unit (31) with separate internal instruction (32) and load/store (33) buses. The data processor (30) includes a nonvolatile memory (34) connected to the instruction bus (32). In a first mode of operation, a system integration unit (36) allows cross-bus accesses from the load/store bus (33) to the nonvolatile memory (34) on the instruction bus (32). These cross-bus accesses allow the central processing unit (31) to access system parameters from the same nonvolatile memory (34) which stores the program. In a second mode of operation, a control bit in the system integration unit (36) routes accesses from the load/store bus (33) to the nonvolatile memory (34) off-chip. The central processing unit (31) continues to access instructions from the nonvolatile memory (34) in the second mode. In this way, system parameters normally stored in the nonvolatile memory (34) may be accurately calibrated.

REFERENCES:
patent: Re30671 (1981-07-01), Poland
patent: 4079456 (1978-03-01), Lunsford et al.
patent: 4131944 (1978-12-01), Mager et al.
patent: 4434462 (1984-02-01), Guttag et al.
patent: 4441154 (1984-04-01), McDonough et al.
patent: 4521852 (1985-06-01), Guttag
patent: 4523271 (1985-06-01), Levien
patent: 4590552 (1986-05-01), Guttag et al.
patent: 4715013 (1987-12-01), MacGregor et al.
patent: 4802119 (1989-01-01), Heene et al.
patent: 4870302 (1989-09-01), Freeman
patent: 4975870 (1990-12-01), Knicely et al.
patent: 5014191 (1991-05-01), Padgaonkar et al.
patent: 5056009 (1991-10-01), Mizuta
patent: 5067077 (1991-11-01), Wakimoto et al.
patent: 5107417 (1992-04-01), Yokoyama
patent: 5222226 (1993-06-01), Yamaguchi et al.
patent: 5247621 (1993-09-01), Gulick
patent: 5251304 (1993-10-01), Sibigtroth et al.
patent: 5307464 (1994-04-01), Akao et al.
patent: 5428770 (1995-06-01), Garner

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