NXP Semiconductors MPC862TZQ100B

Overview

MPC862TZQ100B from Freescale Semiconductor is a PowerQUICC™ family integrated communications microprocessor featuring a 32-bit MPC8xx PowerPC core, 4-Kbyte instruction and 4-Kbyte data cache, 10/100 Fast Ethernet Controller (FEC), and enhanced ATM SAR functionality in ESAR mode. It operates at up to 100 MHz with 3.3 V supply and supports UTOPIA Level 2, MII, and dual-ported CPM for telecom edge routing and DSL access concentrators.

For engineers reviewing the MPC862TZQ100B datasheet, MPC862TZQ100B pinout, MPC862TZQ100B application, or MPC862TZQ100B equivalent, this page delivers verified technical context, package mapping, cache configuration, FEC timing, and ESAR-mode ATM interface specifications directly applicable to embedded networking hardware design and migration from MPC857DSL/MPC862T variants.

Technical Context

The MPC862TZQ100B implements a single-issue 32-bit PowerPC core with MMU, 32-entry ITLB/DTLB, and physically addressed caches using LRU replacement. Its CPM includes a 32-bit RISC controller, 8-Kbyte dual-port RAM, and 10 SDMA channels dedicated to serial protocol offload.

It integrates a Fast Ethernet Controller supporting simultaneous MII (10/100Base-T) and UTOPIA (half-duplex) operation via multiplexed bus, plus enhanced SAR (ESAR) mode enabling OAM performance monitoring, ATM port-to-port switching without RAM-based microcode, and AAL2/VBR functionality stored in ROM.

Key Specifications

Pinout & Package

Package: 357-pin plastic ball grid array (PBGA), RoHS-compliant, thermal pad exposed on underside for board-level heat conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC857DSL, MPC862TZQ100B offers identical ESAR and FEC capabilities but adds TSA and full SMC2 support; versus MPC862T, it shares the same cache and frequency but omits one SCC and SMC to reduce cost and power in DSL-focused deployments.

Availability

MPC862TZQ100B is available at Aetrix Electronics and suitable for DSL access concentrators, ATM edge routers, industrial protocol gateways, and legacy telecom terminal replacements requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MPC862TZQ100B 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) is a fabless semiconductor company specializing in embedded processing, connectivity, and analog solutions for automotive, industrial, and networking markets.

The MPC862TZQ100B belongs to the PowerQUICC™ family - designed specifically for integrated communications processing in carrier-grade DSL, ATM, and enterprise edge equipment where deterministic real-time packet handling and hardware-accelerated protocol offload are critical.

FAQ

What is the maximum operating frequency of the MPC862TZQ100B and how does bus timing scale?

The MPC862TZQ100B operates at a maximum core frequency of 100 MHz in 2:1 mode (core clock twice the bus clock), resulting in a 50 MHz system bus. Bus signal timing parameters - including CLKOUT period (min 20.00 ns), setup/hold windows, and address/data valid windows - are strictly defined in Table 7 of the Hardware Specifications document for 33/40/50/66 MHz bus speeds. At 100 MHz core, the device must be configured for 50 MHz bus operation to meet AC timing margins.

Does the MPC862TZQ100B support UTOPIA Level 2 in full-duplex mode?

Yes, the MPC862TZQ100B supports full-duplex UTOPIA operation using a "split" bus architecture, allowing simultaneous master (ATM side) and slave (PHY side) transactions. This capability is explicitly documented in Section 2 ("Features") of the MPC862EC Rev. 3 specification under ESAR enhancements, and enables concurrent cell transmission and reception without FIFO arbitration stalls.

How many serial DMA channels does the MPC862TZQ100B provide, and which peripherals do they serve?

The MPC862TZQ100B provides 10 serial DMA (SDMA) channels, allocated exclusively to the Communications Processor Module (CPM). These channels service SCC1–SCC4 and SMC1–SMC2 for protocol offload tasks including HDLC framing, UART receive/transmit buffering, and transparent bit-stream transfers. The count matches the MPC857T and MPC857DSL variants and is confirmed in Table 1 and Section 4 of the Hardware Specifications.

What thermal resistance values apply to the MPC862TZQ100B's 357-pin PBGA package?

For the MPC862TZQ100B's 357-pin PBGA, the documented thermal resistances are: RθJA = 37 °C/W (natural convection, single-layer board), RθJMA = 30 °C/W (200 ft/min airflow, single-layer board), RθJB = 13 °C/W (junction-to-board), and RθJC = 6 °C/W (junction-to-case). These values are specified in Table 3 of the Hardware Specifications and assume JEDEC JESD51-2/6/8 test conditions with proper PCB via placement to ground planes.

Is the MPC862TZQ100B pin-compatible with other members of the MPC862/857T/857DSL family?

No, the MPC862TZQ100B is not universally pin-compatible across the family. While it shares the 357-pin PBGA footprint with MPC862P, MPC862T, and MPC857T, functional pin assignments differ significantly - especially for SCC/SMC signals, TSA routing, and PCMCIA interface lines. Pin compatibility is only guaranteed within the same functional subset (e.g., MPC857DSL variants); migration from MPC862T requires layout revision due to differing SMC2 and TSA signal allocations.