NXP Semiconductors SAA7109E/V1,518

Overview

SAA7109E/V1,518 from NXP Semiconductors (formerly Philips Semiconductors) is a monolithic 3.3 V CMOS PC-CODEC IC integrating video decoder, scaler, and encoder functions in a single BGA156 package. It supports six analog video inputs (CVBS/Y-C), 9-bit ADCs, ITU-R BT.656-compliant digital video I/O, and triple 10-bit DACs for CVBS/S-video/RGB output - enabling PC-to-TV video conversion in notebook, PCMCIA, and AGP graphics applications.

For engineers reviewing the SAA7109E/V1,518 datasheet, SAA7109E/V1,518 pinout, SAA7109E/V1,518 application, or SAA7109E/V1,518 equivalent, this page delivers verified technical context, validated pin roles, confirmed multi-standard decoding (PAL/NTSC/SECAM), exact scaling capabilities (up/down to 800×600), and real-world interface constraints including I²C-bus control, boundary scan compliance, and crystal-dependent clock generation (24.576 MHz or 32.11 MHz).

Technical Context

The SAA7109E/V1,518 implements dual independent clock domains: a line-locked decoder domain synchronized to incoming video fields (50/60 Hz auto-detected), and a crystal-stable encoder domain operating at 27 MHz with programmable pixel clock up to 45 MHz. Its analog front-end includes two differential CMOS preprocessing channels with AGC, white peak control, and on-chip anti-aliasing filters.

Digital processing comprises a 9-bit ADC-based decoder with adaptive comb filtering, luminance/chrominance separation per ITU-R BT.470-3, and VBI data slicing (WST/NABTS/CC/VPS); plus an encoder with horizontal/vertical scaler, anti-flicker filter, RGB→Y-CB-CR matrix, 3×256-byte LUT, hardware cursor, and border generator - all configurable via I²C-bus (up to 400 kbit/s) with full register read-back capability.

Key Specifications

Pinout & Package

BGA156 package (SOT472-1), 15 × 15 × 1.15 mm body, Moisture Sensitivity Level e3. Separate power/ground pins for analog (VDDAe/VSSAe), digital core (VDDId/VSSId), digital peripheral (VDDEd/VSSEd), oscillator (VDDXe/VSSXe), and I²C/boundary scan domains ensure noise isolation between encoder and decoder sections.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PC-CODEC applications.

Compared with ADV7170KSTZ and SAA7109E/V1,518, the SAA7109E/V1,518 uniquely combines full-duplex video processing (decode + encode + scale) in one die - eliminating inter-chip timing skew, reducing layout complexity, and enabling synchronized VBI data pass-through from input to output - critical for teletext-enabled set-top boxes and broadcast monitoring equipment.

Availability

SAA7109E/V1,518 is available at Aetrix Electronics and suitable for notebook TV-out, PCMCIA video capture, and hybrid satellite set-top box applications requiring stable component supply across extended production lifecycles.

Supply support for SAA7109E/V1,518 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, with deep expertise in video processing, automotive radar, secure identification, and connectivity solutions.

The SAA7109E/V1,518 belongs to NXP's legacy PC-CODEC product line, designed specifically to meet PC-99 desktop video specifications - delivering integrated, low-cost, low-power video acquisition and display functionality for resource-constrained embedded computing platforms.

FAQ

What video standards does the SAA7109E/V1,518 support for decoding and encoding?

The SAA7109E/V1,518 supports PAL BGHI, PAL N, PAL M, NTSC M, NTSC-Japan, NTSC N, NTSC 4.43, and SECAM for both decoding and encoding. Automatic field frequency detection (50/60 Hz) enables seamless switching between standards without firmware intervention. The SAA7109E/V1,518 does not implement Macrovision copy protection - that feature is exclusive to the SAA7108E variant.

Does the SAA7109E/V1,518 require an external crystal, and what frequencies are supported?

Yes, the SAA7109E/V1,518 requires a single external crystal: either 24.576 MHz or 32.11 MHz. Pin ALRCLK determines selection - grounded for 24.576 MHz (default), pulled high via 3.3 kΩ resistor for 32.11 MHz. Both crystals enable full multi-standard operation; the choice affects audio clock derivation but not video timing accuracy, as the internal PLL locks to line rate.

Can the SAA7109E/V1,518 output RGB signals directly to a VGA monitor?

Yes, the SAA7109E/V1,518 supports non-interlaced RGB output in bypass mode, delivering up to 800×600@60 Hz (PIXCLK < 45 MHz) with separate HSYNC/VSYNC signals. This allows use as an auxiliary VGA monitor output while simultaneously generating TV signals - a capability confirmed in Section 3 (General Description) and Figure 1 of the datasheet.

How is VBI data handled in the SAA7109E/V1,518?

The SAA7109E/V1,518 integrates a multi-standard VBI data slicer supporting WST, NABTS, Closed Caption, VPS, WSS, and VITC. Decoded VBI data appears alongside active video on the IPD (Image Port Data) bus in enhanced ITU-R BT.656 format, enabling direct CPU or FPGA parsing without external demodulators - a key differentiator versus basic video encoders.

What power supply architecture does the SAA7109E/V1,518 use?

The SAA7109E/V1,518 employs segregated power domains: VDDAe/VSSAe for analog encoder circuitry, VDDAd/VSSAd for analog decoder, VDDId/VSSId for digital cores, VDDEd/VSSEd for digital peripherals, and VDDXe/VSSXe for oscillators. This partitioning minimizes noise coupling between high-speed digital logic and sensitive analog video paths - critical for achieving >48 dB SNR in both acquisition and playback.