Features List

◆ RC32300 32-bit Microprocessor

– Enhanced MIPS-II ISA

– Enhanced MIPS-IV cache prefetch instruction

– DSP Instructions

– MMU with 16-entry TLB

– 8kB Instruction cache, 2-way set associative

– 2kB Data cache, 2-way set associative

– Per line cache locking

– Write-through and write-back cache management

– Debug interface through the EJTAG port

– Big or little endian support

◆ Interrupt Controller

– Allows status of each interrupt to be read and masked

◆ UARTs

– Two 16550 Compatible UARTs

– Baud rate support up to 1.5 Mb/s

◆ Counter/Timers

– Three general purpose 32-bit counter/timers

◆ General Purpose I/O Pins (GPIOP)

– 32 individually programmable pins:

each pin programmable as input, output, or alternate function,

input can be an interrupt or NMI source,

input can also be active high or active low

– 4 additional, auxiliary GPIO pins can be configured as input or output

◆ SDRAM Controller

– 2 memory banks, non-interleaved, 512 MB total

– 32-bit wide data path

– Supports 4-bit, 8-bit, and 16-bit wide SDRAM chips

– SODIMM support

– Stays on page between transfers

– Automatic refresh generation

◆ Peripheral Device Controller

– 26-bit address bus

– 32-bit data bus with variable width support of 8-,16-, or 32-bits

– 8-bit boot ROM support

– 6 banks available, up to 64MB per bank

– Supports Flash ROM, PROM, SRAM, dual-port memory, and

peripheral devices

– Supports external wait-state generation, Intel or Motorola style

– Write protect capability

– Direct control of optional external data transceivers

◆ System Integrity

– Programmable system watchdog timer resets system on timeout

– Programmable bus transaction times memory and peripheral

transactions and generates a warm reset on time-out

◆ DMA

– 14 DMA channels

– Services on-chip and external peripherals

– Supports memory-to-memory, memory-to-I/O, and I/O-to-I/O

transfers

– Supports flexible descriptor based operation and chaining via

linked lists of records (scatter / gather capability)

– Supports unaligned transfers