Agilent Technologies 35670-90066 manual Agilent 35670A, A11 Keyboard Controller assembly

	Agilent 35670A	Voltages and Signals
		A11 Keyboard Controller
SCL	Serial Clock — This is the serial clock for the keyboard IIC bus. The IIC controller on the
	A7 CPU assembly generates this clock to synchronize the transfer of data from the
	A11 Keyboard Controller assembly.
SDA	Serial Data — This is the keyboard IIC bus. When a key is pressed or the RPG is turned,
	SINTFPn interrupts the A7 CPU assembly and this line transmits data to the A7 CPU assembly
	in 8-bit frames.
SINTFPn	Serial Interrupt from the Front Panel — A high-to-low transition on this line interrupts the
	A7 CPU assembly. This line goes low when a key is pressed or when the RPG is turned.

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