摘要:
A semiconductor integrated circuit that includes a circuit block having a predetermined function, a power switch capable of supplying an operating power to the circuit block, and a current measuring circuit for obtaining a current flowing to the circuit block based on a voltage between terminals of the power switch in a state in which the power switch is turned on and an on-resistance of the power switch. Thus, it is possible to measure a current of the circuit block in a state in which a chip is normally operated.
摘要:
A semiconductor integrated circuit is constituted to include a circuit block having a predetermined function, a power switch capable of supplying an operating power to the circuit block, and a current measuring circuit for obtaining a current flowing to the circuit block based on a voltage between terminals of the power switch in a state in which the power switch is turned on and an on-resistance of the power switch. The current flowing to the circuit block is obtained based on the voltage between terminals of the power switch in the state in which the power switch is turned on and the on-resistance of the power switch. Thus, it is possible to measure a current of the circuit block in a state in which a chip is normally operated.
摘要:
A semiconductor integrated circuit is constituted to include a circuit block having a predetermined function, a power switch capable of supplying an operating power to the circuit block, and a current measuring circuit for obtaining a current flowing to the circuit block based on a voltage between terminals of the power switch in a state in which the power switch is turned on and an on-resistance of the power switch. The current flowing to the circuit block is obtained based on the voltage between terminals of the power switch in the state in which the power switch is turned on and the on-resistance of the power switch. Thus, it is possible to measure a current of the circuit block in a state in which a chip is normally operated.
摘要:
A semiconductor integrated circuit is constituted to include a circuit block having a predetermined function, a power switch capable of supplying an operating power to the circuit block, and a current measuring circuit for obtaining a current flowing to the circuit block based on a voltage between terminals of the power switch in a state in which the power switch is turned on and an on-resistance of the power switch. The current flowing to the circuit block is obtained based on the voltage between terminals of the power switch in the state in which the power switch is turned on and the on-resistance of the power switch. Thus, it is possible to measure a current of the circuit block in a state in which a chip is normally operated.
摘要:
A scan chain configuration and a control method for the same are provided, which are optimized for the leakage current reduction technique by a vector input in SoC in which many functional blocks are mounted. The semiconductor integrated circuit includes: plural power domains (Area1-AreaN) which have plural functional blocks; power switches (PSW1-PSWN) which can supply a power source for operation to the power domains; a scan chain provided for every power domain, and a memory unit (VEC) which supplies, to a scan chain, a vector to enable shifting to a low-leakage state. By re-coupling the scan chain only to a non-operating functional block, it is possible to perform shifting to a low-leakage state for a short time.
摘要:
A scan chain configuration and a control method for the same are provided, which are optimized for the leakage current reduction technique by a vector input in SoC in which many functional blocks are mounted. The semiconductor integrated circuit includes: plural power domains (Area1-AreaN) which have plural functional blocks; power switches (PSW1-PSWN) which can supply a power source for operation to the power domains; a scan chain provided for every power domain, and a memory unit (VEC) which supplies, to a scan chain, a vector to enable shifting to a low-leakage state. By re-coupling the scan chain only to a non-operating functional block, it is possible to perform shifting to a low-leakage state for a short time.
摘要:
A semiconductor integrated circuit device which consumes less power and enables real-time processing. The semiconductor integrated circuit device includes thermal sensors which detect temperature and determine whether the detection result exceeds reference values and output the result, and a control block capable of controlling the operations of arithmetic blocks based on the output signals of the thermal sensors. The control block returns to an operation state from a suspended state with an interrupt signal based on the output signals of the thermal sensors and determines the operation conditions of the arithmetic blocks to ensure that the temperature conditions of the arithmetic blocks are satisfied. Thereby, power consumption is reduced and real-time processing efficiency is improved.
摘要:
There is provided a semiconductor integrated circuit device which consumes less power and enables real-time processing. The semiconductor integrated circuit device comprises: thermal sensors which can detect temperature, determine whether the detection result exceeds each of the above reference values and output the result; and a control block capable of controlling the operations of arithmetic blocks based on the output signals of the thermal sensors, wherein the control block returns to an operation state from a suspended state with an interrupt signal based on the output signals of the thermal sensors and determines the operation conditions of the arithmetic blocks to ensure that the temperature conditions of the arithmetic blocks are satisfied. Thereby, power consumption is reduced and real-time processing efficiency is improved.
摘要:
The performance of a whole system is improved by synchronizing communication and computations between stacked computing LSIs. Each of stacked an external communication LSI and a computing LSI has a PLL which multiplies a crystal oscillator clock signal, a clock pulse generator which distributes the clock signal, and flip-flop circuits. The computing LSI has a DLL circuit composed of a clock phase comparator, a delay controller, and a delay chain. In order to synchronize the communication and computations of the external communication LSI and the computing LSI, a synchronization reference clock signal is transmitted from the external communication LSI to the computing LSI via a through-electrode. An internal clock signal of the computing LSI is synchronized with the synchronization reference clock signal from the external communication LSI by the DLL circuit.
摘要:
The performance of a whole system is improved by synchronizing communication and computations between stacked computing LSIs. Each of stacked an external communication LSI and a computing LSI has a PLL which multiplies a crystal oscillator clock signal, a clock pulse generator which distributes the clock signal, and flip-flop circuits. The computing LSI has a DLL circuit composed of a clock phase comparator, a delay controller, and a delay chain. In order to synchronize the communication and computations of the external communication LSI and the computing LSI, a synchronization reference clock signal is transmitted from the external communication LSI to the computing LSI via a through-electrode. An internal clock signal of the computing LSI is synchronized with the synchronization reference clock signal from the external communication LSI by the DLL circuit.