Semiconductor device and control method of semiconductor device
AssigneeFujitsu Limited
InventorKOICHI YOSHIMI
Life of this patent
Estimating the term…
Abstract
While transmission of data to be transmitted and gap data to be transmitted by the same transmission path as that data is controlled so that a frequency of a data signal may become equal to or more than a certain frequency, a data output driver selects and outputs the data or the gap data as the data signal, a valid signal generation circuit outputs a valid signal that indicates whether or not the data is effective, and a reception circuit that is formed in a different die receives the data signal and the valid signal transmitted via the transmission path that includes a through silicon via and acquires the data from the data signal based on the valid signal.
Claims8
A semiconductor device comprising:
- a holding circuit that holds first data to be transmitted;
- a data generation circuit that generates second data to be transmitted by the same transmission path as the first data;
- a control circuit that controls transmission of the first data and the second data so that a frequency of a data signal becomes equal to or more than a certain frequency;
- an output circuit that selects and outputs the first data held by the holding circuit or the second data generated by the data generation circuit as the data signal in correspondence with control by the control circuit;
- a valid signal generation circuit that outputs a valid signal that indicates that the data is effective when the output circuit is outputting the first data;
- and
- a reception circuit that is formed in a second die different from a first die that includes the holding circuit, the data generation circuit, the control circuit, the output circuit, and the valid signal generation circuit, receives the data signal and the valid signal transmitted from the first die via the transmission path that includes a through silicon via, and acquires the first data from the data signal based on the valid signal.
A control method of a semiconductor device in that a first die and a second die are connected by a transmission path that includes a through silicon via, the control method comprising:
- controlling, by a control circuit in the first die, transmission of first data and second data to be transmitted by the same transmission path so that a frequency of a data signal becomes equal to or more than a certain frequency;
- selecting and outputting, by an output circuit in the first die, the first data held by a holding circuit in the first die or the second data generated by a data generation circuit in the first die as the data signal in correspondence with control by the control circuit;
- outputting, by a valid signal generation circuit in the first die, a valid signal that indicates that the data is effective when the first data is being outputted as the data signal;
- receiving, by a reception circuit in the second die, the data signal and the valid signal transmitted from the first die via the transmission path;
- and
- acquiring, by the reception circuit, the first data from the data signal based on the valid signal.
Dependencies are inferred from the claim text.