Renesas IDT79RC32V334-150BB

Overview

IDT79RC32V334-150BB from Integrated Device Technology is a 32-bit integrated communications processor based on the RC32300 CPU core, operating at up to 150 MHz with Enhanced MIPS-II ISA, 8 kB instruction cache, 2 kB data cache, and integrated SDRAM controller supporting up to 512 MB. It targets embedded networking and communications systems requiring high integration of memory, PCI, UART, SPI, DMA, and local bus interfaces.

For engineers reviewing the IDT79RC32V334-150BB datasheet, IDT79RC32V334-150BB pinout, IDT79RC32V334-150BB application, or IDT79RC32V334-150BB equivalent, key selection considerations include its 256-ball PBGA package, 3.3 V core/5 V tolerant I/O, dual 16550-compatible UARTs, 32-bit PCI 2.2 interface, and EJTAG debug support for real-time embedded development.

Technical Context

The IDT79RC32V334-150BB implements a scalar 5-stage pipeline RISCore32300 CPU core with MMU, TLB, and cache coherency support including prefetch and conditional move instructions. Its integrated peripherals include a 4-bank SDRAM controller (75 MHz), 6-bank local memory/I/O controller, 32-bit PCI 2.2 bridge with arbiter, and four 32-bit timers.

It supports big/little-endian operation, programmable cache write policies (write-through/no-write-allocate, write-back), and flexible DMA with scatter/gather, unaligned transfers, and byte-lane alignment. The device includes dual UARTs with modem control, SPI master mode, and JTAG/EJTAG compliant debug infrastructure.

Key Specifications

Pinout & Package

256-ball PBGA package with 1.0 mm ball pitch, designed for high-density PCB layouts and thermal reliability in embedded communications platforms.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar integrated communications processor applications.

Compared with IDT79RC32334-150BB and IDT79RC32334-133BB, the IDT79RC32V334-150BB provides identical performance and functionality but adds RoHS compliance and lead-free soldering compatibility-critical for modern industrial and telecom equipment certifications without altering PCB layout or firmware.

Availability

IDT79RC32V334-150BB is available at Aetrix Electronics and suitable for network router control planes, industrial protocol gateways, VoIP media gateways, and telecom line card controllers requiring stable component supply across multi-year production cycles.

Supply support for IDT79RC32V334-150BB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Integrated Device Technology (IDT) is a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance embedded processors for communications and computing markets.

IDT79RC32V334-150BB belongs to the RC32300 family of integrated communications processors, designed to accelerate time-to-market for cost-sensitive embedded systems requiring MIPS-compatible software ecosystems and high peripheral integration.

FAQ

What is the maximum operating frequency of the IDT79RC32V334-150BB?

The IDT79RC32V32V334-150BB operates at up to 150 MHz, as confirmed by its part number suffix "-150" and validated in the AC Timing Characteristics section of the Rev. Y datasheet. This frequency applies to the RISCore32300 CPU core and supports deterministic execution of real-time embedded workloads such as VoIP codecs and packet forwarding engines. IDT79RC32V334-150BB maintains full functionality-including cache, SDRAM, and PCI interfaces-at this rated speed.

Does the IDT79RC32V334-150BB support both big-endian and little-endian operation?

Yes, the IDT79RC32V334-150BB supports configurable big-endian or little-endian operation at runtime via CP0 register settings, as documented in the CPU Execution Core section. This capability allows seamless integration with heterogeneous software stacks-including legacy big-endian networking code and modern little-endian Linux distributions-without hardware modification. IDT79RC32V334-150BB implements this through dedicated endian control logic within the RISCore32300 core.

What type of SDRAM devices does the IDT79RC32V334-150BB support?

The IDT79RC32V334-150BB supports SDRAM devices with densities of 16 Mb, 64 Mb, 128 Mb, 256 Mb, and 512 Mb, as explicitly listed in the Synchronous-DRAM Interface section. It drives four independent banks with automatic refresh generation and supports discrete chips, SODIMMs, and DIMMs. IDT79RC32V334-150BB does not support DDR or LPDDR; only single-data-rate SDR SDRAM is compatible per the Rev. Y specification.

Is the IDT79RC32V334-150BB pin-compatible with other RC32334 variants?

Yes, the IDT79RC32V334-150BB is fully pin-compatible with all RC32334 variants in the 256-ball PBGA package, including IDT79RC32334-133BB and IDT79RC32334-150BB. The "V" in IDT79RC32V334-150BB denotes the lead-free ("green") version, with identical mechanical footprint, signal mapping, and electrical characteristics. IDT79RC32V334-150BB requires no PCB redesign when substituting for non-green variants.

Does the IDT79RC32V334-150BB include an on-chip MMU and TLB?

Yes, the IDT79RC32V334-150BB integrates a full MMU with a 32-entry page-based Translation Lookaside Buffer (TLB), enabling multitasking operating systems such as VxWorks and Linux to manage virtual memory spaces. This is confirmed in the Features list and CPU Execution Core section. IDT79RC32V334-150BB uses the TLB to accelerate context switches and support kernel-mode isolation without external memory management hardware.