GENERAL DESCRIPTION
The memory controller SAA4952WP is the improved version of the SAA4951WP. The circuit has been designed for high-end TV sets using 2fH technics. For basic feature modules a 1fH mode can be activated. In this situation the controller supplies the system with a line-locked clock. The new device has been designed to be able to operate in the hardware environment of the SAA4951WP.

FEATURES
• Support for acquisition, display and deflection PLL
• 50/100 Hz (or 60/120 Hz) scan conversion
• Progressive scan 50 Hz/1250 lines (60 Hz/1050 lines) interlaced or 50 Hz/625 lines (60 Hz/525 lines) non-interlaced in serial memory structure
• 50 Hz/625 lines (60 Hz/525 lines) mode support for a PALplus system and basic features
• Acquisition frequencies 12, 13.5, 16 and 18 MHz and display frequencies of 27, 32 and 36 MHz (2fH) in every combination, horizontal compression (support for 4 : 3 and 14 : 9 display on a 16 : 9 screen) and horizontal zoom
• Configured as a three clock system with a fixed 27 MHz deflection clock (deflection controlled by the TDA9151)
• Configured as a two-clock system (deflection controlled by e.g. TDA9152)
• Single clock for 50 Hz vertical and 15.625 kHz horizontal frequency
• Support of new IC generations [PAN-IC (SAA4995WP), VERIC (SAA4997H), MACPACIC (SAA4996H) and LIMERIC (SAA4945H)]
• Support for two or one field memories
• Still picture
• Support for memory types such as TMS4C2970/71
• Internal simple Multi-PIP (3 × 3) or (4 × 4) conversion
• Multi-PIP support with an external PIP module/full performance
• Programmable via microcontroller port
• Capability of reading the length of incoming fields via microcontroller port
• Golden SCART option (clock generation for TDA9151)
• Acquisition is able to operate with external sync and clock of digital sources (slave mode)
• Generator mode for the display, stable still picture or OSD in the event of no input source.