NXP Semiconductors KMPC8280CZUQLDA

Overview

KMPC8280CZUQLDA from Freescale Semiconductor is a PowerQUICC II family integrated communications processor featuring a dual-issue G2_LE core (Power Architecture®-compliant), 16 KB I-Cache and 16 KB D-Cache, three Fast Communication Controllers (FCCs), four Serial Communications Controllers (SCCs), PCI bridge (v2.2), USB 2.0 full/low-speed controller, and two Multichannel Controllers (MCCs). It operates at up to 450 MHz core frequency and targets telecom edge routers, ATM/IMA gateways, and TDM-based access concentrators.

For engineers reviewing the KMPC8280CZUQLDA datasheet, KMPC8280CZUQLDA pinout, KMPC8280CZUQLDA application, or KMPC8280CZUQLDA equivalent, key selection considerations include its 480-pin TBGA (ZU) package, dual PLL architecture enabling independent core/CPM clocking, UTOPIA II interface support, TC layer + IMA capability (MPC8280-specific), and 105°C max junction temperature rating under industrial operating conditions.

Technical Context

The KMPC8280CZUQLDA integrates a 32-bit G2_LE microprocessor core with separate 16 KB instruction and data caches, physically addressed and four-way set associative, alongside a dedicated 32-bit RISC Communications Processor Module (CPM) with 32 KB dual-port RAM/ROM. Its clock system uses two independent PLLs-one for the core (2:1 to 8:1 multipliers) and one for the CPM (2:1 to 8:1 multipliers)-enabling asynchronous operation at up to 450 MHz core and 292 MHz CPM frequencies.

It supports three distinct bus domains: a 64-bit 60x bus (up to 100 MHz), a 32-bit local bus (up to 100 MHz), and a 32-bit PCI bus (66 MHz, v2.2 compliant), each with configurable burst transfers, parity/ECC support, and programmable memory controllers. The device implements eight TDM interfaces (four per MCC), two UTOPIA II ports, and FCC2-linked Transmission Convergence (TC) layer hardware exclusively in the MPC8280 variant-absent in MPC8270/MPC8275.

Key Specifications

Pinout & Package

KMPC8280CZUQLDA is housed in a 480-ball TBGA package (ZU code), leaded, with 27 × 27 mm body size and 1.27 mm ball pitch. Pin assignments follow the standard MPC8280 ZU package layout defined in Section 8 ("Pinout") of MPC8280EC Rev. 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8275VR and MPC8247LZQ, KMPC8280CZUQLDA uniquely delivers hardware TC+IMA co-processing, dual UTOPIA ports, and eight TDM interfaces - making it the sole option for carrier-grade ATM/IMA aggregation where deterministic cell timing and multi-port TDM switching are mandatory.

Availability

KMPC8280CZUQLDA is available at Aetrix Electronics and suitable for telecom infrastructure, industrial protocol gateways, and TDM access concentrators requiring stable component supply across extended product lifecycles.

Supply support for KMPC8280CZUQLDA 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs for automotive, industrial, and networking markets.

KMPC8280CZUQLDA belongs to the PowerQUICC II family - engineered specifically for integrated communications processing in carrier-class edge equipment, combining general-purpose CPU execution with dedicated hardware accelerators for telecom protocols.

FAQ

What is the maximum supported core frequency for KMPC8280CZUQLDA?

KMPC8280CZUQLDA supports a maximum core frequency of 450 MHz, achieved using the internal core PLL with an 8:1 multiplier ratio applied to a 56.25 MHz CLKIN reference. This frequency is validated under industrial temperature conditions (0°C to 70°C ambient, 105°C junction) with proper thermal management and voltage regulation per Table 4 of MPC8280EC Rev. 2.

Does KMPC8280CZUQLDA support USB 2.0 host mode with isochronous transfers?

Yes, KMPC8280CZUQLDA supports USB 2.0 full-speed (12 Mbps) and low-speed (1.5 Mbps) host mode, including isochronous transfers. Its USB controller implements CRC16 generation/checking, NRZI encoding/decoding with bit stuffing, and flexible multi-buffer frame handling - all confirmed in Section 1.1 "Universal serial bus (USB) controller" of MPC8280EC Rev. 2.

Is the TC layer in KMPC8280CZUQLDA compatible with ITU-T I.363.2 for IMA?

Yes, KMPC8280CZUQLDA's Transmission Convergence (TC) layer implements hardware-accelerated IMA frame assembly/disassembly compliant with ITU-T I.363.2, including cell delay variation compensation, FEC, and frame synchronization. This capability is explicitly documented as MPC8280-only in Figure 1 notes and Section 1.1 of MPC8280EC Rev. 2.

What are the power supply sequencing requirements for KMPC8280CZUQLDA?

KMPC8280CZUQLDA requires strict power sequencing: VDD/VCCSYN must be raised before or simultaneously with VDDH during power-on reset, and VDDH may exceed VDD/VCCSYN by no more than 2.5 V during normal operation. These constraints are specified in Table 4 footnotes and Section 2 "Operating Conditions" of MPC8280EC Rev. 2 to prevent latch-up and ensure reliable PLL lock.

Can KMPC8280CZUQLDA operate in slave mode with an external master processor?

Yes, KMPC8280CZUQLDA supports slave mode operation: its CPU core can be disabled via software, allowing the device to function solely as a communications coprocessor controlled by an external master over the 60x or local bus. This capability is explicitly stated in Section 1.1 "CPU core can be disabled and the device can be used in slave mode to an external core" of MPC8280EC Rev. 2.