RC64474™
RC64475™
RISControllerTM Embedded
64-bit Microprocessor, based on
RISCore4000TM
Features
Software compatible with entire RISController Series of
Embedded Microprocessors
◆
Industrial temperature range support
◆
Active power management
– Powers down inactive units, through sleep-mode feature
◆
100% pin compatibility between RC64574, RC64474 and
RC4640
◆
100% pin compatibility between RC64575, RC64475 and
RC4650
◆
RC64474 available in 128-pin QFP package, for 32-bit only
systems
◆ RC64475 available in 208-pin QFP package, for full 64/32 bit
systems
◆
Simplified board-level testing, through full Joint Test Action
Group (JTAG) boundary scan
◆
Windows® CE compliant
◆
High performance 64-bit microprocessor, based on the
RISCore4000
– Minimized branch and load delays, through streamlined
5-stage scalar pipeline.
– Single and double precision floating-point unit
– 125 peak MFLOP/s at 250 MHz
– 330 Dhrystone MIPS at 250 MHz
– Flexible RC4700-compatible MMU
– Joint TLB on-chip, for virtual-to-physical address mapping
◆ On-chip two-way set associative caches
– 16KB instruction cache (I-cache)
– 16KB data cache (D-cache)
◆ Optional I-cache and D-cache locking (per set), provides
improved real-time support
◆
Enhanced, flexible bus interface allows simple, low-cost
design
– 64-bit Bus Interface option, 1000MB/s bandwidth support
– 32-bit Bus Interface option, 500MB/s bandwidth support
– SDRAM timing protocol, through delayed data in write cycles
– RC4000/RC5000 family bus-protocol compatibility
– Bus runs at fraction of pipeline clock (1/2 to 1/8)
◆
Implements MIPS-III Instruction Set Architecture (ISA)
◆
3.3V core with 3.3V I/O
◆
Block diagram
System Control
Coprocessor
(CPO)
330 MIPS
64-bit
RISCore4000
CPU Core
125 MFLOPS
Single/Double
Precision
FPA
Control Bus
Data Bus
Instruction Bus
16KB
Instruction Cache
(Lockable)
32-/64-bit
Synchronized
System
Interface
16KB
Data Cache
(Lockable)
The IDT logo is a trademark and RC32134, RC32364, RC64145, RC64474, RC64475, RC4650, RC4640, RC4600,RC4700 RC3081, RC3052, RC3051, RC3041, RISController, and RISCore are trademarks of Integrated Device Technology, Inc.
1 of 25
© 2001 Integrated Device Technology, Inc.
April 10, 2001
DSC 4952
