NXP Semiconductors SAA7109AE/V1/G,518

Overview

SAA7109AE/V1/G,518 from NXP Semiconductors is a multistandard video decoder and encoder IC designed for PC-99-compliant desktop video applications. It integrates a 9-bit analog front-end decoder (supporting PAL BGHI/M/N, NTSC M/J/N/4.43, SECAM), a digital video scaler, and a triple-DAC encoder delivering CVBS/S-video/RGB outputs at up to 1280×1024@60 Hz or 1920×1080i@60 Hz. Its dual-section architecture enables simultaneous PC graphics encoding and analog video decoding on a single LBGA156 package.

For engineers reviewing the SAA7109AE/V1/G,518 datasheet, SAA7109AE/V1/G,518 pinout, SAA7109AE/V1/G,518 application, or SAA7109AE/V1/G,518 equivalent, this HD-CODEC provides verified line-locked decoding, crystal-stable 27 MHz subcarrier generation, I²C-bus programmability (400 kHz), Macrovision 7.01 support (SAA7108AE only), and boundary-scan test compliance per IEEE 1149.1 - critical for embedded video subsystem validation and legacy display interface design.

Technical Context

The SAA7109AE/V1/G,518 implements a dual-domain architecture: its decoder section uses line-locked clock decoding with adaptive comb filtering and automatic 50/60 Hz field detection, while the encoder section operates either as master (crystal-stable 27 MHz PLL) or slave (synchronized to decoder clock via FIFO decoupling). Both sections share independent 3.3 V supplies (VDDAe/VDDAd, VDDEd/VDDId) and separate I²C-bus interfaces (SDAe/SCLe and SDAd/SCLd).

It supports six analog video inputs (CVBS/Y-C) with differential CMOS preprocessing, 9-bit ADCs, and real-time BCS/hue control; the encoder accepts 16-bit 4:2:2 CB-Y-CR or RGB data via double-edged pixel clock (≤85 MHz), scales to square-pixel format, applies programmable 5-line anti-flicker filtering, and outputs through three 10-bit DACs (27 MHz sample rate) with adjustable levels and border color control.

Key Specifications

Pinout & Package

Package: LBGA156 (plastic low-profile ball grid array; 156 balls; body 15 × 15 × 1.05 mm; MSL e3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video codec applications.

Compared with ADV7170KSTZ and SAA7113H, the SAA7109AE/V1/G,518 delivers full bidirectional video processing in one device - eliminating inter-chip timing skew, reducing BOM count by ≥3 components, and enabling synchronized decoder-encoder operation via internal FIFO coupling.

Availability

SAA7109AE/V1/G,518 is available at Aetrix Electronics and suitable for desktop graphics adapters, PCMCIA video cards, and hybrid satellite set-top boxes requiring stable component supply across extended product lifecycles.

Supply support for SAA7109AE/V1/G,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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and consumer applications.

The SAA7109AE/V1/G,518 belongs to NXP's HD-CODEC family, engineered specifically for PC-99-compliant desktop video subsystems requiring integrated multistandard decoding, scaling, and analog TV encoding in minimal PCB area.

FAQ

What video standards does the SAA7109AE/V1/G,518 support for decoding?

The SAA7109AE/V1/G,518 supports PAL BGHI, PAL M, PAL N, combination PAL N, NTSC M, NTSC-Japan, NTSC N, NTSC 4.43, and SECAM decoding. All decoded outputs conform to ITU-R BT.601 Y-CB-CR 4:2:2 format, delivered via the IPD bus. The decoder uses line-locked clocking and adaptive comb filtering to ensure accurate chrominance separation across all standards.

Does the SAA7109AE/V1/G,518 include Macrovision copy protection?

No, Macrovision Pay-per-View copy protection (rev. 7.01, 6.1, 1.03) is implemented only in the SAA7108AE variant. The SAA7109AE/V1/G,518 does not include Macrovision circuitry. This distinction is explicitly documented in Section 2.3 of the official datasheet, where Macrovision support is noted as an option "applying to the SAA7108AE only."

What is the maximum supported input resolution for the SAA7109AE/V1/G,518 encoder?

The SAA7109AE/V1/G,518 encoder supports up to 1280×1024 progressive graphics input at 60 Hz (PIXCLK < 85 MHz) and 1920×1080 interlaced input at 60 Hz. Input formats include 16-bit 4:2:2 CB-Y-CR (with double-edge clocking) and non-interlaced RGB, both processed through the on-chip scaler and anti-flicker filter before DAC conversion.

How is crystal frequency selected on the SAA7109AE/V1/G,518?

Crystal frequency selection (24.576 MHz or 32.11 MHz) is performed via pin strapping on ALRCLK. A 3.3 kΩ pull-up resistor sets ALRCLK HIGH for 32.11 MHz operation; leaving it unconnected (internal pull-down) defaults to 24.576 MHz. This strapping occurs during power-up reset and configures both decoder and encoder clock generators.

What are the key differences between the SAA7109AE/V1/G,518 and SAA7108AE?

The SAA7109AE/V1/G,518 and SAA7108AE share identical pinout, package (LBGA156), and core video processing architecture. The primary difference is Macrovision support: only the SAA7108AE includes Macrovision 7.01/6.1/1.03 circuitry. All other specifications - decoding standards, encoder resolution, I²C interface, power supply, and pin functions - are functionally identical per the shared datasheet revision 03.