7/17/2003 - Texas Instruments Incorporated (TI) [NYSE: TXN] announced the industry´s first Double Data Rate-II (DDR-II) Phase Locked Loop (PLL) for registered memory modules that supports data rates up to 800MB/s. Supporting the industry´s highest frequency, the high-performance, low-skew, low-jitter, zero-delay buffer gives designers wider timing margins necessary in designing high speed DDR Memory Modules found in applications such as PCs, servers, workstations and communications.
High Performance and Ease of Design
The CDCU877 DDR-II PLL is fully compliant with the JEDEC DDR-II standard and distributes a differential-clock input pair to 10 differential pairs of clock outputs and one differential pair feedback-clock output differential pair. Combined with the SN74SSTU32864 DDR-II logic register, this device provides a total chipset solution and facilitates easier part sourcing for DDR-II memory modules.
The SN74SSTU32864 can be configured as a 25-bit 1:1 pinout configuration or a 14-bit 1:2 pinout, allowing users to work with a single part number for multiple DIMM configurations. Output Edge-Control Circuitry is utilized in the device to minimize switching noise in un-terminated lines, improving signal integrity. The device also supports the DDR-II low power, minimizing switching noise into the SDRAM inputs on the DIMM, improving signal integrity and lowering system power consumption.
Pricing and Availability
The CDCU877 is available today and comes in a 52-ball MicroStar JuniorTM BGA and 40-pin MLF package. Planned pricing for the CDCU877 is $3.50 per device in quantities of 1,000.
About TI´s Chipset for Registered DIMMs
TI provides customers high performance complete PLL and Register chip-sets for DDR-I and DDR-II Registered DIMM by leveraging the company´s leadership in analog technology. TI has developed DDR-I PLL and DDR-II Register first in the industry and offers the fastest DDR-II PLL to customers who want to deliver best DDR-II Registered DIMM products to market quickly. For more information, visit www.ti.com/sc/ddrsdram.
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