Features
• Superscalar (3 Instructions per Clock Peak)
• Dual 16 KB Caches
• Selectable Bus Clock
• 32-bit Compatibility PowerPC Implementation
• On-chip Debug Support
• Nap, Doze and Sleep Power Saving Modes
• Device Offered in Cerquad, CBGA 255, HiTCE CBGA 255 and CI-CGA 255
PowerPC® 603e
RISC
Microprocessor
Family
Features Specific to CBGA 255, HiTCE CBGA 255 and CI-CGA 255
• 7.4 SPECint95, 6.1 SPECfp95 at 300 MHz (Estimated)
• PD Typically = 3.5W (266 MHz), Full Operating Conditions
• Branch Folding
• 64-bit Data Bus (32-bit Data Bus Option)
• 4-Gbytes Direct Addressing Range
• Pipelined Single/Double Precision Float Unit
• IEEE 754 Compatible FPU
• IEEE P 1149-1 Test Mode (JTAG/C0P)
• fINT Max = 300 MHz
PID7t-603e
• fBUS Max = 75 MHz
• Compatible CMOS Input/TTL Output
TSPC603R
Features Specific to Cerquad
• 5.6 SPECint95, 4 SPECfp95 and 200 MHz (Estimated)
• PD Typically = 2.5W (200 MHz), Full Operating Conditions
1. Description
The PID7t-603e implementation of the PowerPC 603e (renamed after the 603R) is a
low-power implementation of the Reduced Instruction Set Computer (RISC) micropro-
cessor PowerPC family. The 603R is pin-to-pin compatible with the PowerPC 603e
and 603P in a Cerquad package. The 603R implements 32-bit effective addresses,
integer data types of 8, 16 and 32 bits, and floating-point data types of 32 and 64 bits.
The 603R is a low-power 2.5/3.3V design and provides four software controllable
power-saving modes. This device is a superscalar processor capable of issuing and
retiring as many as three instructions per clock. Instructions can be executed in any
order for increased performance, but, the 603R makes completion appear sequential.
It integrates five execution units and is able to execute five instructions in parallel.
The 603R provides independent on-chip, 16-Kbyte, four-way set-associative, physi-
cally addressed caches for instructions and data, as well as on-chip instructions, and
data Memory Management Units (MMUs). The MMUs contain 64-entry, two-way
set-associative, data and instruction translation look aside buffers that provide support
for demand-paged virtual memory address translation and variable-sized block trans-
lation. The 603R has a selectable 32- or 64-bit data bus and a 32-bit address bus. The
interface protocol allows multiple masters to compete for system resources through a
central external arbiter. The device supports single-beat and burst data transfers for
memory accesses, and supports memory-mapped I/Os.
Rev. 5410B–HIREL–09/05