IDT has introduced new series of flexible, low-power, asynchronous dual-ports for high-end handsets. Acting as a bridge between processors, the new IDT devices allow handset designers to minimise device complexity through increased design flexibility, resulting in faster time to market. Moreover, by adding in power plane isolation functionality, the devices allow for a significant reduction in total system power consumption.
The IDT 70P2X5 dual-ports are designed to work with application processors and baseband processors that make use of an address-data mux (ADM) interface. The ADM interface has a lower input/output (I/O) count than other approaches, such as the standard asynchronous dual-port RAMs commonly found in high-end mobile handsets. The IDT dual-ports use 50 percent fewer processor I/O pins, freeing those pins to support other functions. Moreover, the IDT dual-ports also deploy eight dynamically programmable I/Os that the processor can use to control and/or monitor other devices.
The unique power plane isolation allows handsets to achieve a true standby state and also provides the ability to power down entire processing subsystems. IDT low-power dual-ports also help reduce design complexity by eliminating the need for additional logic or Complex Programmable Logic Devices (CPLD).
IDT is also announcing new devices in the 70P2X9 dual-port family. These next-generation products are pin and backwards compatible with previous IDT devices, offering increased functionality without the need for re-design. To help in design flexibility, the devices also include selectable ADM/non-ADM operation on both ports, support for variable core and I/O supply voltages, a 256K density option and power-plane isolation functionality.
Consumers of high-end handsets demand high-speed downloads, as well as top-quality playback, without draining the battery. IDT identified the interface between the baseband and application processors as a major performance bottleneck and battery drain. It was clear that a new interconnect architecture was needed to solve this problem, so IDT designed these dual-ports in close co-operation with leading high-end handset manufacturers and with the pre-eminent processor component provider in this application space.