Renesas 89HPEB383ZAEM8

Overview

89HPEB383ZAEM8 from Integrated Device Technology is a transparent x1 PCI Express to 32-bit/66 MHz PCI bridge IC, supporting both transparent and non-transparent addressing modes, compliant with PCI Express Base 1.1 and PCI Local Bus 3.0 specifications, with 128-byte max payload, 512-byte PCIe read completion buffer, and 1-kB PCI read completion buffer. It enables legacy PCI expansion on modern PCIe-based motherboards and DVR adapter cards.

For engineers reviewing the 89HPEB383ZAEM8 datasheet, 89HPEB383ZAEM8 pinout, 89HPEB383ZAEM8 application, or 89HPEB383ZAEM8 equivalent, key selection criteria include PCIe-to-PCI bridging mode support, 5V-tolerant I/O with VIO pins, D0/D3 hot/cold power states, ASPM L0s/L1, and 10×10 mm 132-pin QFN package compatibility with 4-layer PCB routing.

Technical Context

The 89HPEB383ZAEM8 implements a dual-domain bridge architecture with independent PCIe and PCI transaction layers, supporting subtractive decode for legacy cycle forwarding and masquerade mode for EEPROM-configurable vendor/device ID override. It integrates a 4-master PCI arbiter and supports short-term caching to achieve 5× standard read performance.

It operates under common PCH supply voltages (±10% tolerance), delivers 130 mW standby power, and implements full Advanced Error Reporting (AER) with end-to-end CRC generation/checking, up to four outstanding memory reads on PCIe, and up to four outstanding read requests on PCI.

Key Specifications

Pinout & Package

89HPEB383ZAEM8 is housed in a 10×10 mm, 132-pin QFN package with exposed thermal pad, designed for thermal efficiency and 4-layer PCB routing simplicity. Pin functions are defined per IDT's official PEB383 pin assignment documentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe-to-PCI bridging applications.

Compared with PEB383ZAE and PI7C9X2G304, the 89HPEB383ZAEM8 uniquely combines 10×10 mm QFN packaging, 5V-tolerant I/O with VIO pins, subtractive decode, and masquerade mode-making it the only option for cost-sensitive, legacy-compatible, 4-layer motherboard and DVR adapter designs requiring full PCI 3.0 interoperability.

Availability

89HPEB383ZAEM8 is available at Aetrix Electronics and suitable for motherboard expansion, digital video recorder (DVR) adapter cards, set-top box I/O subsystems, and multi-function printer controller designs requiring stable component supply and long-lifecycle availability.

Supply support for 89HPEB383ZAEM8 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, serial switching, and interface solutions, acquired by Renesas Electronics in 2019.

The PEB383 product line was engineered to deliver ultra-low-power, high-interoperability PCIe-to-PCI bridging for consumer electronics-specifically targeting motherboard, DVR, and set-top box applications demanding plug-and-play BIOS compatibility and 4-layer PCB design simplicity.

FAQ

What is the primary function of the 89HPEB383ZAEM8?

The 89HPEB383ZAEM8 is a transparent and non-transparent x1 PCI Express to 32-bit/66 MHz PCI bridge IC. Its core function is to enable legacy PCI peripherals to operate on modern PCIe-based platforms while maintaining full compliance with PCI Local Bus 3.0 and PCIe Base 1.1 specifications. The 89HPEB383ZAEM8 supports subtractive decode, masquerade mode, and integrated arbitration-making it ideal for motherboard and DVR adapter applications requiring BIOS-level plug-and-play operation without firmware modification.

Does the 89HPEB383ZAEM8 support 5V-tolerant I/O, and how is it implemented?

Yes, the 89HPEB383ZAEM8 supports 5V-tolerant I/O through dedicated VIO pins that configure internal I/O buffers for safe operation with 5V PCI signaling while powered by standard 3.3 V supplies. This implementation eliminates level-shifting components and ensures robust interoperability with legacy 5V PCI devices such as video decoders and network controllers. The 89HPEB383ZAEM8 leverages this feature in DVR and set-top box applications where mixed-voltage peripheral integration is essential.

What power management features does the 89HPEB383ZAEM8 provide?

The 89HPEB383ZAEM8 supports D0, D3 hot, and D3 cold power states per PCI Power Management Specification 1.2, plus ASPM L0s and L1 link-state power management. Its standby power is rated at 130 mW typical, and it operates with common PCH supply voltages (±10% tolerance). These features allow the 89HPEB383ZAEM8 to meet ENERGY STAR® requirements in printers and reduce system-level idle power in always-on DVR and set-top box applications without compromising PCIe link reliability.

How does short-term caching improve performance in the 89HPEB383ZAEM8?

Short-term caching in the 89HPEB383ZAEM8 accelerates PCIe-to-PCI read transactions by temporarily storing recently accessed data, reducing repeated round-trip latency to downstream PCI devices. This feature delivers up to 5× higher read throughput compared to conventional bridges-critical for real-time multi-channel video decoding in DVR adapter cards. The 89HPEB383ZAEM8 implements this caching entirely in hardware, requiring no driver or software changes to realize the performance benefit.

Is the 89HPEB383ZAEM8 pin-compatible with other PEB383 variants?

No, the 89HPEB383ZAEM8 is not pin-compatible with the PEB383ZAE variant, which uses a 14×14 mm 128-pin QFP package. The 89HPEB383ZAEM8 uses a 10×10 mm 132-pin QFN package with distinct pin count, pitch, and thermal pad layout. While both share identical functionality and register mapping, PCB redesign is required when migrating between them. The 89HPEB383ZAEM8 pinout is documented in IDT's official PEB383 datasheet revision dated January 2010.