Renesas IDT79RC32V334-100BBGI

Overview

IDT79RC32V334-100BBGI 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 MMU with 32-page TLB. It integrates SDRAM controller (4 banks, up to 512 MB), PCI 2.2 bridge (32-bit/66 MHz), dual 16550-compatible UARTs, SPI master, four 32-bit timers, and programmable I/O - deployed in embedded networking gateways and industrial control systems.

For engineers reviewing the IDT79RC32V334-100BBGI datasheet, IDT79RC32V334-100BBGI pinout, IDT79RC32V334-100BBGI application, or IDT79RC32V334-100BBGI equivalent, key selection criteria include its 256-ball PBGA package, 3.3 V core with 5 V tolerant I/O, EJTAG debug interface, SDRAM timing support up to 75 MHz, and dual-mode PCI host/satellite operation.

Technical Context

The IDT79RC32V334-100BBGI implements a 5-stage scalar RISCore32300 CPU executing at 150 MHz, supporting big/little endian, DSP instructions, cache prefetch, and conditional move. Its memory subsystem includes separate 8 kB instruction and 2 kB data caches, both 2-way set associative and lockable per line, with programmable write-through/write-back policies.

The on-chip SDRAM controller supports 16–512 Mb devices across 4 non-interleaved banks, with automatic refresh, page comparators for latency optimization, and direct DIMM/SODIMM interfacing. The PCI bridge operates at 66 MHz, complies with PCI Rev. 2.2, and provides full target/master capability with serial EEPROM configuration loading.

Key Specifications

Pinout & Package

256-ball PBGA package with 1.0 mm ball pitch, 3.3 V supply, and 5 V tolerant I/O pins. Thermal design requires board-level heat dissipation support for industrial ambient operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT79RC32V334-100BBGI, the IDT79RC32334-100BBGI offers identical functionality and industrial qualification, while the MPC8245VRMIBA provides higher CPU throughput at the cost of added BOM complexity and thermal load - making IDT79RC32V334-100BBGI optimal for cost-sensitive, thermally constrained embedded communications designs.

Availability

IDT79RC32V334-100BBGI is available at Aetrix Electronics and suitable for network edge routers, industrial protocol gateways, and VoIP media gateways requiring stable component supply, long-lifecycle support, and industrial-grade thermal performance.

Supply support for IDT79RC32V334-100BBGI 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 industrial markets.

IDT79RC32V334-100BBGI belongs to the Interprise™ family of integrated communications processors, designed to unify CPU, memory, I/O, and interconnect functions into a single chip for cost-optimized, high-integration embedded networking systems.

FAQ

What is the maximum SDRAM capacity supported by the IDT79RC32V334-100BBGI?

The IDT79RC32V334-100BBGI supports up to 512 MB of SDRAM across 4 non-interleaved banks, accommodating device densities from 16 Mb to 512 Mb. Its SDRAM controller directly manages discrete chips, SODIMMs, or DIMMs without external logic, and includes automatic refresh generation driven by an on-chip timer.

Does the IDT79RC32V334-100BBGI support both PCI host and satellite modes?

Yes, the IDT79RC32V334-100BBGI supports dual-mode PCI operation: as a host controlling external peripherals or as a satellite device on a PCI bus. In satellite mode, it can warm-reset itself and uses pci_req_n[2] as pci_idsel for configuration space access - enabling flexible system topology without hardware reconfiguration.

What debug interfaces are available on the IDT79RC32V334-100BBGI?

The IDT79RC32V334-100BBGI features IEEE 1149.1-compliant JTAG and enhanced EJTAG interfaces. The EJTAG module supports in-circuit emulation with Real-Time Mode, allowing non-intrusive program counter monitoring and debug unit control - fully compatible with emulators developed for the RC32364 platform.

Is the IDT79RC32V334-100BBGI pin-compatible with other RC32334 variants?

Yes, the IDT79RC32V334-100BBGI shares the same 256-ball PBGA package, pinout, and electrical characteristics as other RC32334 variants (e.g., IDT79RC32334-100BBGI). The "V" suffix denotes the specific mask revision, and "BBGI" confirms industrial temperature grade (–40°C to +85°C) and green RoHS compliance.

What UART features does the IDT79RC32V334-100BBGI provide?

The IDT79RC32V334-100BBGI integrates two 16550-compatible UARTs supporting baud rates up to 1.5 Mb/s. Channel 0 includes full modem control signals (CTS, DSR, DTR, RTS), and both channels support programmable FIFOs, interrupt-driven operation, and PIO-mapped register access - enabling robust serial communication in industrial and telecom applications.