Data transfer control device and electronic instrument

Details Data transfer control device and electronic instrument Data transfer control device and electronic instrument

2007-07-24

2007-07-24

Trujillo, James K. (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S320000, C713S322000, C713S323000, C455S127100, C455S127500, C455S343500, C455S522000, C455S574000

Reexamination Certificate

active

10934461

ABSTRACT:
A data transfer control device includes an OUT-transfer transmitter circuit which transmits OUT data by driving a serial signal line, a clock-transfer transmitter circuit which transmits a clock signal CLK by driving a serial signal line, a PLL circuit which generates the clock signal CLK, and a power-down setting circuit which sets a power-down mode. In a first power-down mode, the OUT-transfer transmitter circuit is set to the power-down mode, and the clock-transfer transmitter circuit is set to the power-down mode to stop a system clock signal of a target-side data transfer control device. In a second power-down mode, the OUT-transfer transmitter circuit is set to the power-down mode without setting the clock-transfer transmitter circuit to the power-down mode.

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