PRELIMINARY
LF4460
LF4430
LF4415
Video Memory / FIFO
FRAME
MEMORY
Features
Memory densities: 15, 30, 60Mbit
150MHz Max clock rate
Independent Read and Write ports:
• Supports simultaneous read/write operations
• Enables buffering across clock domains
Operating Modes:
• Single-channel FIFO w/ Asynchronous I/O
• Dual independent FIFOs w/ Asynchronous I/O
Flexible Write/Read Pointer Manipulation
• W/R address pointer Clear/Set
• W/R address pointers can be overridden in real-
time using external 24bit address port
• TRS detection for auto-clearing of Write pointer
• W/R memory access Enable/Disable
• Input enable control (Write Masking) for freeze
frame control
Selectable I/O V
DD
= 1.8V, 2.5V, 3.3V
Selectable Core V
DD
= 1.8V, 2.5V, 3.3V
172 ball FBGA package (15 x 15 x 1.4mm)
Depth expansion is supported for Multi-frame
HDTV, Multiframe SDTV, and other formats:
• Seamless address space is maintained with up
to 12 cascaded devices
Near-Full/Empty Flags With Programmable
Thresholds
Collide Flag alerts User of W/R pointer crossings
I
2
C Serial Microprocessor Interface
Output Enable Control (Data Skipping)
JTAG Boundary Scan - IEEE 1149.1
LF4460 - 60Mbit
Selectable Memory Organization
• 7,761,600 x 8-bit
• 6,209,280 x 10-bit
• 5,174,400 x 12-bit
• 3,880,800 x 16-bit
• 3,104,640 x 20-bit
• 2,587,200 x 24-bit
LF4430 - 30Mbit
Selectable Memory Organization
• 3,880,800 x 8-bit
• 3,104,640 x 10-bit
• 2,587,200 x 12-bit
• 1,940,400 x 16-bit
• 1,552,320 x 20-bit
• 1,293,600 x 24-bit
LF4415 - 15Mbit
Selectable Memory Organization
• 1,940,400 x 8-bit
• 1,552,320 x 10-bit
• 1,293,600 x 12-bit
• 970,200 x 16-bit
• 776,160 x 20-bit
• 646,800 x 24-bit
Applications
Frame buffer for common HD formats (720p, 1080i, 1080p)
HDTV / SDTV Frame Synchronization
HDTV Display Buffer
Time Base Correction (TBC)
Freeze-Frame Buffer
Picture-in-Picture (PIP) Buffer
Frame Rate Conversion
Security Camera Systems
Field-Based or Frame-Based Comb Filtering
HD Video Capture & Editing Systems
Deep Data Buffering
Image Manipulation (Rotation, Zoom)
Test Pattern Generation
Motion Detection or Frame-to-Frame Correlation
LOGIC Devices Incorporated
www.logicdevices.com
1
High Performance Memory Product
January 23, 2008 LDS-44xx-A
LUXPIA [ LUXPIA ]
