MC68030RC50C Freescale Semiconductor, MC68030RC50C Datasheet - Page 393

• Manufacturer Part Number: MC68030RC50C
• Description: IC MPU 32BIT ENHANCED 128-PGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68030RC50C

• Processor Type: M680x0 32-Bit
• Speed: 50MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 128-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

0
10.1.4.2 PROCESSOR-COPROCESSOR INTERFACE.
10-6
To improve the efficiency of operand transfers between memory and the
sor provides all control, address, and data signals necessary to request and
obtain the bus and then performs DMA transfers using the bus. DMA copro-
of the signals involved in an asynchronous non-DMA M68000 coprocessor
A13-A15 of the address bus is used with other address signals to select the
coprocessor, the system designer can use several coprocessors of the same
type and assign a unique CplD to each one.
coprocessor, a coprocessor that requires a relatively high amount of bus
bandwidth or has special bus requirements can be implemented as a DMA
coprocessor. DMA coprocessors can operate as bus masters. The coproces-
cessors, however, must still act as bus slaves when they require information
or services of the main processor using the M68000 coprocessor interface
protocol.
interface. The synchronous interface is similar. Since the CplD on signals
MAIN PROCESSOR
Figure 10-2. Asynchronous Non-DMA M68000 Coprocessor
MC68030
*Chip select logic may be integrated into the coprocessor
Address lines not specified above are "0" during coprocessor access
AIg-A16 = 0010 ~
A15-A13 = xxx
A4-A1 = rrrr
FCO-FC2 = 111
t
A19-A13
R ~
A4-A1
FCO-FC2
031~D0
MC68030 USER'S MANUAL
~
~
~
Interface Signal Usage
/ =
/
CPU SPACE CYCLE
COPROCESSOR ACCESS IN CPU SPACE
COPROCESSOR IDENTIFICATION
COPROCESSOR INTERFACE REGISTER SELECTOR
COPROCESSOR
/
/
t
(
DECODE
LOGIC*
~ / D S - - ~
Figure 10-2 is a block diagram
==
ASYNCHRONOUS
iNTERFACE
COPROCESSOR
LOGIC
BUS
MOTOROLA