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C68000 Schematic ( PDF Datasheet ) - Cast

Teilenummer C68000
Beschreibung 16-bit Microprocessor Megafunction
Hersteller Cast
Logo Cast Logo 




Gesamt 5 Seiten
C68000 Datasheet, Funktion
C68000
16-bit Microprocessor
Megafunction
General Description
Features
The C68000 is megafunction of a powerful
16/32-bit microprocessor and is derived from the
Motorola MC68000 microprocessor. The C68000
www.DataSheet4U.icsoamfully functional 32-bit internal and 16-bit
external equivalent for the MC68000. The
C68000 serves interrupts and exceptions, and
provides an interface for M6800 family
peripherals.
The C68000 is the microcode-free design
developed for reuse in ASIC and FPGA
implementations. The design is strictly
synchronous without internal tri-states and with a
synchronous reset.
Symbol
C68000
addr
clk addrz
fc
e
vma
vpa_n
berr_n
datai
datao
dataz
ctrlz
as_n
rw
uds_n
lds_n
reseti_n
reseto_n
halti_n
halto_n
dtack_n
br_n
bg_n
bgack_n
ipl_n
Control Unit
ƒ 16-bit two levels instruction decoder
ƒ Three levels instruction queue
55 instructions and 14 address modes
Supervisor and User mode
ƒ Independent stack for both modes
Users registers
ƒ Eight 32-bit data & address registers
ƒ 16-bit status register
Data format
ƒ Integer 8, 16 or 32-bit
ƒ BCD packet
ƒ Bit
Memory interface
ƒ Independent data and address buses
ƒ Asynchronous bus control
ƒ 4 GB-address space
ƒ 31-bit address bus (optional 32-bit)
ƒ 8-address spaces (used 5)
ƒ 16-bit data bus
Interrupt Controller
ƒ Seven Priority Levels
ƒ Unlimited interrupt sources
ƒ Vectored or auto-vectored interrupt
modes
Arithmetic-Logic Unit
ƒ 8, 16, 32-bit arithmetic and logic
operations
ƒ Boolean manipulations
ƒ 16 x 16-bit multiplication (sign or
unsigned)
ƒ 32 / 16-bit division (sign or unsigned)
M6800 peripherals family synchronous
interface
Two or Three wire bus arbitration interface
Operation execution is the same for data or
address registers
ƒ No different for operation on data or
address registers
CAST, Inc.
March 2004
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