IDT79R3051/79R3052
RISControllers
™
Integrated Device Technology, Inc.
IDT79R3051
™
, 79R3051E
IDT79R3052
™
, 79R3052E
FEATURES:
• Instruction set compatible with IDT79R3000A and
IDT79R3001 MIPS RISC CPUs
• High level of integration minimizes system cost, power
consumption
— IDT79R3000A /IDT79R3001 RISC Integer CPU
— R3051 features 4KB of Instruction Cache
— R3052 features 8KB of Instruction Cache
— All devices feature 2kB of Data Cache
— “E” Versions (Extended Architecture) feature full
function Memory Management Unit, including 64-
entry Translation Lookaside Buffer (TLB)
— 4-deep write buffer eliminates memory write stalls
— 4-deep read buffer supports burst refill from slow
memory devices
•
•
•
•
•
•
— On-chip DMA arbiter
— Bus Interface minimizes design complexity
Single clock input with 40%-60% duty cycle
35 MIPS, over 64,000 Dhrystones at 40MHz
Low-cost 84-pin PLCC packaging that's pin-/package-
compatible with thermally enhanced 84-pin MQUAD.
Flexible bus interface allows simple, low-cost designs
20, 25, 33, and 40MHz operation
Complete software support
— Optimizing compilers
— Real-time operating systems
— Monitors/debuggers
— Floating Point Software
— Page Description Languages
Clk2xIn
Clock
Generator
Unit
Master Pipeline Control
System Control
Coprocessor
Exception/Control
Registers
Memory Management
Registers
BrCond(3:0)
Integer
CPU Core
General Registers
(32 x 32)
ALU
Shifter
Int(5:0)
Translation
Lookaside Buffer
(64 entries)
Mult/Div Unit
Address Adder
PC Control
Virtual Address
32
Physical Address Bus
Instruction
Cache
(8kB/4kB)
Data Bus
Bus Interface Unit
4-deep
Write
Buffer
4-deep
Read
Buffer
DMA
Arbiter
Data
Cache
(2kB)
32
BIU
Control
Address/
Data
DMA
Ctrl
Rd/Wr
Ctrl
SysClk
2874 drw 01
Figure 1. R3051 Family Block Diagram
The IDT logo is a registered trademark, and RISChipset, RISController, R3041, R3051, R3052, R3071, R3081, R3720, R4400 and R4600 are trademarks of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
©1995
Integrated Device Technology, Inc.
SEPTEMBER 1995
5.3
DSC-3000/5
1
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
