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This paper describes logic and circuit design features of a heterogeneous tri-cluster deca-core CPU complex incorporated into a 10nm FinFET mobile SoC for smartphone applications. Similar to Helio X20 [1], the Deca-Core compute function contains three separate clusters of ARMv8a CPUs. The high-performance (HP) cluster is updated to incorporate the most power-efficient out-of-order Cortex-A73 CPU,...
Geyser-2 is the second prototype MIPS CPU which provides a fine-grained run-time power gating (PG) controlled by instructions. Geyser-l, the first prototype only provides the fine-grained run-time PG core. Although it demonstrated the leakage power reduction on a real chip, the operational frequency is limited at 60MHz because of the limitation of the I/O speed. Geyser-2 with cache and TLB mechanism...
This work is a CMOS Start Up Circuit designed which can supply the current flow (ISTART) adjustable to the clock oscillator for digital system generally. The circuit designed can be assigned start current value by giving the appropriate reference voltage (VBIAS). The current value is set to adjust in the range of 0 to 1.35 mA. The reference tune voltage is in the range of 0-5V to follow voltage value...
This article is a CMOS Start Up Circuit Designed which can supply the current flow (ISTART) adjustable to the clock generator for digital system generally. The circuit designed can be assigned start current value by giving the appropriate reference voltage. Current value is set to adjust in the range of 0-1.35 mA. The reference tune voltage is in the range of 0-5V to follow voltage value of microcontroller...
Geyser-1, a prototype MIPS R3000 CPU with fine grain runtime PG for major computational components in the execution stage is available. Function units such as CLU, shifter, multiplier and divider are power-gated and controlled at runtime such that only the function unit to be used is powered-on to minimize the leakage power. The evaluation results on the real chip reveals that the fine grain runtime...
This paper describes ARM3, a second generation RISC microprocessor. The device is a 32-bit CPU, with a 4KByte on-chip cache and a co-processor interface. Two asynchronous clocks are used to ensure that the speed of internal cache cycles is not compromised by the speed of the external memory system, thus permitting the device to be used with low-cost DRAMs. The chip has been fabricated on a 1.5??m...
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