NXP Semiconductors PNX1502E,557

Overview

PNX1502E,557 from NXP Semiconductors (formerly Philips Semiconductors) is a fully integrated Connected Media Processor targeting set-top boxes and digital TV platforms. It features a 32-bit TM3260 VLIW media processor core, integrated DDR SDRAM controller (supporting up to 256 MB), PCI-2.2/XIO-16 bus interface, 10/100 Ethernet MAC, QVCP video composition engine, LCD controller, and VIP video input processor. It operates at 200 MHz core frequency with 1.8 V core supply and 3.3 V I/O, enabling MPEG-2 decoding and real-time video scaling/composition in consumer media devices.

For engineers reviewing the PNX1502E,557 datasheet, PNX1502E,557 pinout, PNX1502E,557 application, or PNX1502E,557 equivalent, this page delivers verified technical context for system-on-chip integration-including DDR timing constraints, PCI bus arbitration behavior, QVCP layer mixing capabilities, and power sequencing requirements critical for STB reference design validation and production firmware bring-up.

Technical Context

The PNX1502E,557 implements a hierarchical memory architecture with separate CPU, PCI, and DCS views, supporting concurrent access via a programmable aperture-based MMIO mapping scheme. Its DDR controller includes dynamic arbitration between CPU and DMA, back-log buffering, and auto-halt power management-enabling low-latency video frame buffering while maintaining system responsiveness.

Its QVCP subsystem integrates hardware-accelerated video processing including chroma keying, linear interpolation, gamma/noise shaping, and multi-layer alpha blending with dedicated CLUT, DCTI, and LSHR units. The VIP supports composite/S-video/YUV input with field-aware acquisition, horizontal filtering, and auxiliary data path handling for closed captioning or teletext insertion.

Key Specifications

Pinout & Package

PNX1502E,557 is housed in a 525-ball fine-pitch BGA package (19×19 mm, 1.0 mm pitch) with thermal pad exposed on underside. Ball assignment follows standard layout defined in Chapter 9 "BGA Ball Assignment" of the PNX15xx Series Data Book (Rev. 3, March 2006), with dedicated power/ground banks, DDR signal groups (DQ/DQS/DM/CK/CK#), PCI bus signals (AD[31:0], C/BE#[3:0], FRAME#, IRDY#), and QVCP/LCD output pins (VD[23:0], VSYNC, HSYNC, CLKOUT).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PNX1502E,557, the PNX1503E,557 delivers 33% higher core throughput and DDR2 support for bandwidth-intensive applications, while the PNX1501E,557 trades performance and feature depth for lower BOM cost and power-making all three members of the PNX15xx family suitable for tiered product portfolios across STB, DTV, and gateway segments.

Availability

PNX1502E,557 is available at Aetrix Electronics and suitable for set-top box, digital television, and home media gateway applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial-grade deployments.

Supply support for PNX1502E,557 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

NXP Semiconductors (originally Philips Semiconductors) is a global leader in high-performance mixed-signal ICs for automotive, industrial, and consumer applications, with deep expertise in media processing and system-on-chip integration.

The PNX15xx series was designed specifically for connected media devices-integrating video decode, composition, display control, and connectivity into a single SoC to accelerate time-to-market for digital TV and STB manufacturers.

FAQ

What is the maximum DDR SDRAM capacity supported by the PNX1502E,557?

The PNX1502E,557 supports up to 256 MB of DDR SDRAM via its integrated DDR controller. This capacity is achieved using two 16-bit ranks (e.g., two 128 MB ×16 chips) or one 32-bit rank (e.g., one 256 MB ×32 chip), with address mapping defined in Chapter 4.2 of the PNX15xx Series Data Book. The controller enforces strict timing parameters including Trcd_rd = 15 ns and Tcas = 2.5 ns to ensure reliable operation at 133 MHz data rate.

Does the PNX1502E,557 include hardware acceleration for MPEG-2 decoding?

The PNX1502E,557 does not contain a dedicated MPEG-2 decode engine on-die. Instead, it relies on the TM3260 VLIW core executing optimized firmware for MPEG-2 video and audio decoding. However, the QVCP and VIP subsystems provide hardware acceleration for post-decode tasks-including video scaling, chroma keying, alpha blending, and field-aware deinterlacing-offloading >70% of the pixel-processing burden from the CPU and enabling real-time 1080i playback.

Can the PNX1502E,557 boot directly from an I²C EEPROM?

Yes, the PNX1502E,557 supports boot-from-I²C-EEPROM mode as defined in Chapter 6 of the PNX15xx Series Data Book. It uses its integrated I²C master to read a binary boot script containing initialization commands for clocks, DDR, and peripherals. The boot process begins after power-on reset and requires a valid I²C slave address (configurable via strap pins) and properly formatted script with checksum verification-enabling secure, field-upgradable firmware deployment without external boot ROM.

What video output formats does the QVCP in the PNX1502E,557 support?

The QVCP in the PNX1502E,557 supports RGB (24-bit), YUV444, YUV422, and YUV420 output formats via its parallel VD[23:0] bus, with programmable timing generators for resolutions up to 1920×1080 at 60 Hz interlaced or progressive. Output format selection is configured through QVCP MMIO registers (e.g., QVCP_STG_CTRL), and gamma/noise shaping (GNSH/ONSH) is applied in real time to enhance visual quality on LCD or CRT displays without CPU intervention.

Is the PNX1502E,557 pin-compatible with other members of the PNX15xx family?

No, the PNX1502E,557 is not pin-compatible with PNX1501E,557 or PNX1503E,557 despite sharing the same 525-ball BGA package outline. Differences in DDR signaling (e.g., PNX1503E,557 supports DDR2-specific pins), PCI voltage tolerance, and QVCP/LCD pin assignments require unique PCB layouts for each variant. Pin compatibility is only guaranteed within the same speed grade and feature set-for example, PNX1502E,557 and PNX1502T,557 share identical ball maps but differ in temperature grade and screening.