Abstract: An apparatus includes a control circuit in a first memory package. The control circuit is configured to connect to a bus and to receive a Duty Cycle Correction (DCC) training command over the bus. The control circuit is configured to perform a DCC training operation while the first memory package is unselected and while a second memory package connected to the bus is selected to perform a memory access operation.

Abstract: An apparatus includes a control circuit in a first memory package. The control circuit is configured to connect to a bus and to receive a Duty Cycle Correction (DCC) training command over the bus. The control circuit is configured to perform a DCC training operation while the first memory package is unselected and while a second memory package connected to the bus is selected to perform a memory access operation.

Abstract: A saddle-ridden vehicle includes: an engine and an air cleaner case that are supported to a body frame and respectively arranged in front and rear sides of the vehicle; a rear cushion arranged between the engine and the air cleaner case, the rear cushion being coupled to the body frame; and a connecting tube that extends forward from the air cleaner case and is coupled to the engine. The connecting tube upwardly bypasses an upper end of the rear cushion so as to be curvedly arranged under an occupant seat. The connecting tube defines a breather-gas return chamber between an inner wall and an upper-side outer wall of the connecting tube, the breather-gas return chamber being communicated with an internal space of the air cleaner case and receiving breather gas from the engine, the inner wall being integrated with the upper-side outer wall.

Abstract: A saddle-ridden vehicle includes: an engine and an air cleaner case that are supported to a body frame and respectively arranged in front and rear sides of the vehicle; a rear cushion arranged between the engine and the air cleaner case, the rear cushion being coupled to the body frame; and a connecting tube that extends forward from the air cleaner case and is coupled to the engine. The connecting tube upwardly bypasses an upper end of the rear cushion so as to be curvedly arranged under an occupant seat. The connecting tube defines a breather-gas return chamber between an inner wall and an upper-side outer wall of the connecting tube, the breather-gas return chamber being communicated with an internal space of the air cleaner case and receiving breather gas from the engine, the inner wall being integrated with the upper-side outer wall.