IDT79RC32T355-150DH

The IDT79RC32T355-150DH is a single‑core, 32‑bit microprocessor based on the RC32300 MIPS‑II architecture running at 150 MHz. It targets embedded and consumer applications requiring an integrated communications and system controller with a broad peripheral set.

Designed for surface‑mount deployment in a 208‑pin PQFP (28×28) package, the device combines CPU, memory controllers, DMA and multiple serial and networking interfaces to simplify board design and system integration. The device is RoHS compliant and specified for 0 °C to 70 °C operation.

Key Features

• Core and Performance — RC32300 MIPS‑II 32‑bit CPU core running at 150 MHz with enhanced MIPS‑II ISA support and DSP instruction extensions.
• Memory and Cache — On‑chip MMU with a 16‑entry TLB, 8 KB 2‑way set associative instruction cache and 2 KB 2‑way set associative data cache with per‑line cache locking and write‑through/write‑back control. Integrated SDRAM controller supports two non‑interleaved banks and up to 512 MB total.
• Peripheral Device Controller — 26‑bit address bus and 32‑bit data bus with variable data‑width support, up to six device banks (up to 64 MB per bank) for boot ROM, Flash or SRAM configurations and external wait‑state control.
• Connectivity and Serial Interfaces — Integrated USB 1.1 full‑speed device controller (12 Mb/s) with support for control, interrupt, bulk and isochronous endpoints; 10/100 Ethernet interface and flexible I2C and UART support (two 16550‑compatible UARTs with baud capability noted in documentation).
• TDM and Telephony Support — Serial TDM interface suitable for voice/data time‑division multiplexing and CODEC/DSP interfacing with support for multiple time slots and internal/external frame generation.
• DMA, Timers and GPIO — 16 DMA channels for on‑chip and external peripheral transfers, three general‑purpose 32‑bit counter/timers, and 36 individually programmable GPIO pins that can function as inputs, outputs or alternate functions and interrupt sources.
• System Integrity and Debug — Programmable watchdog timer and bus transaction timeouts provide reset capability on timeout; EJTAG debug interface and selectable big‑ or little‑endian operation.
• Package and Environmental — 208‑pin PQFP (28×28) surface‑mount package, supplied in tray, consumer qualification, RoHS compliant, ambient operating range 0 °C to 70 °C.

Typical Applications

• Embedded Communications Equipment — Use the integrated Ethernet, USB and serial interfaces plus DMA to implement routers, gateways or protocol converters.
• Voice and Telecom Systems — TDM interface and DSP instruction support make the device suitable for voice processing, CODEC interfacing and telephony front‑end designs.
• General Embedded Controllers — Flexible memory controller, peripheral banking and GPIO array support system control, HMI and sensor interfacing in consumer embedded products.
• Storage and Boot‑Controlled Systems — On‑chip peripheral device controller with multiple banks supports boot ROM and Flash configurations for appliance and consumer electronics designs.

Unique Advantages

• Integrated Communications Peripherals: On‑chip USB, Ethernet, UARTs, I2C and TDM reduce external component count and simplify board layout.
• Flexible Memory Subsystem: SDRAM controller with support for two banks and a peripheral device controller with multiple banks provides adaptable memory and boot options.
• Deterministic DMA and Timing: 16 DMA channels plus 32‑bit timers and watchdog enable efficient data movement and system reliability for real‑time tasks.
• Cache and MMU Support: Instruction and data caches with MMU and TLB support improve code execution efficiency and enable protected memory schemes.
• Development and Debug Friendly: EJTAG debug interface and endian selectability ease integration into existing toolchains and system designs.
• Consumer‑Grade, RoHS Compliant Packaging: Standard 208‑pin PQFP surface‑mount package and RoHS compliance support mainstream manufacturing flows.

Why Choose IDT79RC32T355-150DH?

The IDT79RC32T355-150DH combines a MIPS‑II 32‑bit core at 150 MHz with a comprehensive set of on‑chip peripherals and memory controllers to deliver a compact, integrated solution for embedded communications and consumer systems. Its mix of connectivity (Ethernet, USB, serial, TDM), DMA capability and flexible memory banking supports designs that require both data throughput and system control.

This device is well suited to engineers building consumer and embedded products that demand a balance of integration, deterministic I/O and standard packaging. RoHS compliance and surface‑mount PQFP packaging facilitate conventional production and assembly processes while on‑chip debug and system integrity features support development and long‑term robustness.

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